feat: Basic general context menu

Youtube and Website metadata embeds

electron/cqrs/commands/handlers/clearAllData.ts

@@ -3,6 +3,11 @@ import {
   MessageEntity,
   UserEntity,
   RoomEntity,
+  RoomChannelEntity,
+  RoomMemberEntity,
+  RoomRoleEntity,
+  RoomUserRoleEntity,
+  RoomChannelPermissionEntity,
   ReactionEntity,
   BanEntity,
   AttachmentEntity,
@@ -13,6 +18,11 @@ export async function handleClearAllData(dataSource: DataSource): Promise<void>
   await dataSource.getRepository(MessageEntity).clear();
   await dataSource.getRepository(UserEntity).clear();
   await dataSource.getRepository(RoomEntity).clear();
+  await dataSource.getRepository(RoomChannelEntity).clear();
+  await dataSource.getRepository(RoomMemberEntity).clear();
+  await dataSource.getRepository(RoomRoleEntity).clear();
+  await dataSource.getRepository(RoomUserRoleEntity).clear();
+  await dataSource.getRepository(RoomChannelPermissionEntity).clear();
   await dataSource.getRepository(ReactionEntity).clear();
   await dataSource.getRepository(BanEntity).clear();
   await dataSource.getRepository(AttachmentEntity).clear();

electron/cqrs/commands/handlers/deleteRoom.ts

@@ -1,10 +1,25 @@
 import { DataSource } from 'typeorm';
-import { RoomEntity, MessageEntity } from '../../../entities';
+import {
+  RoomChannelPermissionEntity,
+  RoomChannelEntity,
+  RoomEntity,
+  RoomMemberEntity,
+  RoomRoleEntity,
+  RoomUserRoleEntity,
+  MessageEntity
+} from '../../../entities';
 import { DeleteRoomCommand } from '../../types';
 
 export async function handleDeleteRoom(command: DeleteRoomCommand, dataSource: DataSource): Promise<void> {
   const { roomId } = command.payload;
 
-  await dataSource.getRepository(RoomEntity).delete({ id: roomId });
-  await dataSource.getRepository(MessageEntity).delete({ roomId });
+  await dataSource.transaction(async (manager) => {
+    await manager.getRepository(RoomChannelPermissionEntity).delete({ roomId });
+    await manager.getRepository(RoomChannelEntity).delete({ roomId });
+    await manager.getRepository(RoomMemberEntity).delete({ roomId });
+    await manager.getRepository(RoomRoleEntity).delete({ roomId });
+    await manager.getRepository(RoomUserRoleEntity).delete({ roomId });
+    await manager.getRepository(RoomEntity).delete({ id: roomId });
+    await manager.getRepository(MessageEntity).delete({ roomId });
+  });
 }

electron/cqrs/commands/handlers/saveMessage.ts

@@ -1,23 +1,28 @@
 import { DataSource } from 'typeorm';
 import { MessageEntity } from '../../../entities';
+import { replaceMessageReactions } from '../../relations';
 import { SaveMessageCommand } from '../../types';
 
 export async function handleSaveMessage(command: SaveMessageCommand, dataSource: DataSource): Promise<void> {
-  const repo = dataSource.getRepository(MessageEntity);
   const { message } = command.payload;
-  const entity = repo.create({
-    id: message.id,
-    roomId: message.roomId,
-    channelId: message.channelId ?? null,
-    senderId: message.senderId,
-    senderName: message.senderName,
-    content: message.content,
-    timestamp: message.timestamp,
-    editedAt: message.editedAt ?? null,
-    reactions: JSON.stringify(message.reactions ?? []),
-    isDeleted: message.isDeleted ? 1 : 0,
-    replyToId: message.replyToId ?? null
-  });
 
-  await repo.save(entity);
+  await dataSource.transaction(async (manager) => {
+    const repo = manager.getRepository(MessageEntity);
+    const entity = repo.create({
+      id: message.id,
+      roomId: message.roomId,
+      channelId: message.channelId ?? null,
+      senderId: message.senderId,
+      senderName: message.senderName,
+      content: message.content,
+      timestamp: message.timestamp,
+      editedAt: message.editedAt ?? null,
+      isDeleted: message.isDeleted ? 1 : 0,
+      replyToId: message.replyToId ?? null,
+      linkMetadata: message.linkMetadata ? JSON.stringify(message.linkMetadata) : null
+    });
+
+    await repo.save(entity);
+    await replaceMessageReactions(manager, message.id, message.reactions ?? []);
+  });
 }

electron/cqrs/commands/handlers/saveRoom.ts

@@ -1,31 +1,55 @@
 import { DataSource } from 'typeorm';
 import { RoomEntity } from '../../../entities';
+import { replaceRoomRelations } from '../../relations';
 import { SaveRoomCommand } from '../../types';
 
-export async function handleSaveRoom(command: SaveRoomCommand, dataSource: DataSource): Promise<void> {
-  const repo = dataSource.getRepository(RoomEntity);
-  const { room } = command.payload;
-  const entity = repo.create({
-    id: room.id,
-    name: room.name,
-    description: room.description ?? null,
-    topic: room.topic ?? null,
-    hostId: room.hostId,
-    password: room.password ?? null,
-    hasPassword: room.hasPassword ? 1 : 0,
-    isPrivate: room.isPrivate ? 1 : 0,
-    createdAt: room.createdAt,
-    userCount: room.userCount ?? 0,
-    maxUsers: room.maxUsers ?? null,
-    icon: room.icon ?? null,
-    iconUpdatedAt: room.iconUpdatedAt ?? null,
-    permissions: room.permissions != null ? JSON.stringify(room.permissions) : null,
-    channels: room.channels != null ? JSON.stringify(room.channels) : null,
-    members: room.members != null ? JSON.stringify(room.members) : null,
-    sourceId: room.sourceId ?? null,
-    sourceName: room.sourceName ?? null,
-    sourceUrl: room.sourceUrl ?? null
-  });
+function extractSlowModeInterval(room: SaveRoomCommand['payload']['room']): number {
+  if (typeof room.slowModeInterval === 'number' && Number.isFinite(room.slowModeInterval)) {
+    return room.slowModeInterval;
+  }
 
-  await repo.save(entity);
+  const permissions = room.permissions && typeof room.permissions === 'object'
+    ? room.permissions as { slowModeInterval?: unknown }
+    : null;
+
+  return typeof permissions?.slowModeInterval === 'number' && Number.isFinite(permissions.slowModeInterval)
+    ? permissions.slowModeInterval
+    : 0;
+}
+
+export async function handleSaveRoom(command: SaveRoomCommand, dataSource: DataSource): Promise<void> {
+  const { room } = command.payload;
+
+  await dataSource.transaction(async (manager) => {
+    const repo = manager.getRepository(RoomEntity);
+    const entity = repo.create({
+      id: room.id,
+      name: room.name,
+      description: room.description ?? null,
+      topic: room.topic ?? null,
+      hostId: room.hostId,
+      password: room.password ?? null,
+      hasPassword: room.hasPassword ? 1 : 0,
+      isPrivate: room.isPrivate ? 1 : 0,
+      createdAt: room.createdAt,
+      userCount: room.userCount ?? 0,
+      maxUsers: room.maxUsers ?? null,
+      icon: room.icon ?? null,
+      iconUpdatedAt: room.iconUpdatedAt ?? null,
+      slowModeInterval: extractSlowModeInterval(room),
+      sourceId: room.sourceId ?? null,
+      sourceName: room.sourceName ?? null,
+      sourceUrl: room.sourceUrl ?? null
+    });
+
+    await repo.save(entity);
+    await replaceRoomRelations(manager, room.id, {
+      channels: room.channels ?? [],
+      members: room.members ?? [],
+      roles: room.roles ?? [],
+      roleAssignments: room.roleAssignments ?? [],
+      channelPermissions: room.channelPermissions ?? [],
+      permissions: room.permissions
+    });
+  });
 }

electron/cqrs/commands/handlers/updateMessage.ts

@@ -1,41 +1,52 @@
 import { DataSource } from 'typeorm';
 import { MessageEntity } from '../../../entities';
+import { replaceMessageReactions } from '../../relations';
 import { UpdateMessageCommand } from '../../types';
 
 export async function handleUpdateMessage(command: UpdateMessageCommand, dataSource: DataSource): Promise<void> {
-  const repo = dataSource.getRepository(MessageEntity);
   const { messageId, updates } = command.payload;
-  const existing = await repo.findOne({ where: { id: messageId } });
 
-  if (!existing)
-    return;
+  await dataSource.transaction(async (manager) => {
+    const repo = manager.getRepository(MessageEntity);
+    const existing = await repo.findOne({ where: { id: messageId } });
 
-  if (updates.channelId !== undefined)
-    existing.channelId = updates.channelId ?? null;
+    if (!existing)
+      return;
 
-  if (updates.senderId !== undefined)
-    existing.senderId = updates.senderId;
+    const directFields = [
+      'senderId',
+      'senderName',
+      'content',
+      'timestamp'
+    ] as const;
+    const entity = existing as unknown as Record<string, unknown>;
 
-  if (updates.senderName !== undefined)
-    existing.senderName = updates.senderName;
+    for (const field of directFields) {
+      if (updates[field] !== undefined)
+        entity[field] = updates[field];
+    }
 
-  if (updates.content !== undefined)
-    existing.content = updates.content;
+    const nullableFields = [
+      'channelId',
+      'editedAt',
+      'replyToId'
+    ] as const;
 
-  if (updates.timestamp !== undefined)
-    existing.timestamp = updates.timestamp;
+    for (const field of nullableFields) {
+      if (updates[field] !== undefined)
+        entity[field] = updates[field] ?? null;
+    }
 
-  if (updates.editedAt !== undefined)
-    existing.editedAt = updates.editedAt ?? null;
+    if (updates.isDeleted !== undefined)
+      existing.isDeleted = updates.isDeleted ? 1 : 0;
 
-  if (updates.reactions !== undefined)
-    existing.reactions = JSON.stringify(updates.reactions ?? []);
+    if (updates.linkMetadata !== undefined)
+      existing.linkMetadata = updates.linkMetadata ? JSON.stringify(updates.linkMetadata) : null;
 
-  if (updates.isDeleted !== undefined)
-    existing.isDeleted = updates.isDeleted ? 1 : 0;
+    await repo.save(existing);
 
-  if (updates.replyToId !== undefined)
-    existing.replyToId = updates.replyToId ?? null;
-
-  await repo.save(existing);
+    if (updates.reactions !== undefined) {
+      await replaceMessageReactions(manager, messageId, updates.reactions ?? []);
+    }
+  });
 }

electron/cqrs/commands/handlers/updateRoom.ts

@@ -1,31 +1,68 @@
 import { DataSource } from 'typeorm';
 import { RoomEntity } from '../../../entities';
+import { replaceRoomRelations } from '../../relations';
 import { UpdateRoomCommand } from '../../types';
 import {
   applyUpdates,
   boolToInt,
-  jsonOrNull,
   TransformMap
 } from './utils/applyUpdates';
 
 const ROOM_TRANSFORMS: TransformMap = {
   hasPassword: boolToInt,
   isPrivate: boolToInt,
-  userCount: (val) => (val ?? 0),
-  permissions: jsonOrNull,
-  channels: jsonOrNull,
-  members: jsonOrNull
+  userCount: (val) => (val ?? 0)
 };
 
-export async function handleUpdateRoom(command: UpdateRoomCommand, dataSource: DataSource): Promise<void> {
-  const repo = dataSource.getRepository(RoomEntity);
-  const { roomId, updates } = command.payload;
-  const existing = await repo.findOne({ where: { id: roomId } });
+function extractSlowModeInterval(updates: UpdateRoomCommand['payload']['updates']): number | undefined {
+  if (typeof updates.slowModeInterval === 'number' && Number.isFinite(updates.slowModeInterval)) {
+    return updates.slowModeInterval;
+  }
 
-  if (!existing)
-    return;
+  const permissions = updates.permissions && typeof updates.permissions === 'object'
+    ? updates.permissions as { slowModeInterval?: unknown }
+    : null;
 
-  applyUpdates(existing, updates, ROOM_TRANSFORMS);
-  await repo.save(existing);
+  return typeof permissions?.slowModeInterval === 'number' && Number.isFinite(permissions.slowModeInterval)
+    ? permissions.slowModeInterval
+    : undefined;
+}
+
+export async function handleUpdateRoom(command: UpdateRoomCommand, dataSource: DataSource): Promise<void> {
+  const { roomId, updates } = command.payload;
+
+  await dataSource.transaction(async (manager) => {
+    const repo = manager.getRepository(RoomEntity);
+    const existing = await repo.findOne({ where: { id: roomId } });
+
+    if (!existing)
+      return;
+
+    const {
+      channels,
+      members,
+      roles,
+      roleAssignments,
+      channelPermissions,
+      permissions: rawPermissions,
+      ...entityUpdates
+    } = updates;
+    const slowModeInterval = extractSlowModeInterval(updates);
+
+    if (slowModeInterval !== undefined) {
+      entityUpdates.slowModeInterval = slowModeInterval;
+    }
+
+    applyUpdates(existing, entityUpdates, ROOM_TRANSFORMS);
+    await repo.save(existing);
+    await replaceRoomRelations(manager, roomId, {
+      channels,
+      members,
+      roles,
+      roleAssignments,
+      channelPermissions,
+      permissions: rawPermissions
+    });
+  });
 }
 

electron/cqrs/mappers.ts

@@ -9,10 +9,19 @@ import { RoomEntity } from '../entities/RoomEntity';
 import { ReactionEntity } from '../entities/ReactionEntity';
 import { BanEntity } from '../entities/BanEntity';
 import { AttachmentEntity } from '../entities/AttachmentEntity';
+import { ReactionPayload } from './types';
+import {
+  relationRecordToRoomPayload,
+  RoomChannelPermissionRecord,
+  RoomChannelRecord,
+  RoomMemberRecord,
+  RoomRoleAssignmentRecord,
+  RoomRoleRecord
+} from './relations';
 
 const DELETED_MESSAGE_CONTENT = '[Message deleted]';
 
-export function rowToMessage(row: MessageEntity) {
+export function rowToMessage(row: MessageEntity, reactions: ReactionPayload[] = []) {
   const isDeleted = !!row.isDeleted;
 
   return {
@@ -24,9 +33,10 @@ export function rowToMessage(row: MessageEntity) {
     content: isDeleted ? DELETED_MESSAGE_CONTENT : row.content,
     timestamp: row.timestamp,
     editedAt: row.editedAt ?? undefined,
-    reactions: isDeleted ? [] : JSON.parse(row.reactions || '[]') as unknown[],
+    reactions: isDeleted ? [] : reactions,
     isDeleted,
-    replyToId: row.replyToId ?? undefined
+    replyToId: row.replyToId ?? undefined,
+    linkMetadata: row.linkMetadata ? JSON.parse(row.linkMetadata) : undefined
   };
 }
 
@@ -49,7 +59,30 @@ export function rowToUser(row: UserEntity) {
   };
 }
 
-export function rowToRoom(row: RoomEntity) {
+export function rowToRoom(
+  row: RoomEntity,
+  relations: {
+    channels?: RoomChannelRecord[];
+    members?: RoomMemberRecord[];
+    roles?: RoomRoleRecord[];
+    roleAssignments?: RoomRoleAssignmentRecord[];
+    channelPermissions?: RoomChannelPermissionRecord[];
+  } = {
+    channels: [],
+    members: [],
+    roles: [],
+    roleAssignments: [],
+    channelPermissions: []
+  }
+) {
+  const relationPayload = relationRecordToRoomPayload({ slowModeInterval: row.slowModeInterval }, {
+    channels: relations.channels ?? [],
+    members: relations.members ?? [],
+    roles: relations.roles ?? [],
+    roleAssignments: relations.roleAssignments ?? [],
+    channelPermissions: relations.channelPermissions ?? []
+  });
+
   return {
     id: row.id,
     name: row.name,
@@ -64,9 +97,13 @@ export function rowToRoom(row: RoomEntity) {
     maxUsers: row.maxUsers ?? undefined,
     icon: row.icon ?? undefined,
     iconUpdatedAt: row.iconUpdatedAt ?? undefined,
-    permissions: row.permissions ? JSON.parse(row.permissions) : undefined,
-    channels: row.channels ? JSON.parse(row.channels) : undefined,
-    members: row.members ? JSON.parse(row.members) : undefined,
+    slowModeInterval: row.slowModeInterval,
+    permissions: relationPayload.permissions,
+    channels: relationPayload.channels,
+    members: relationPayload.members,
+    roles: relationPayload.roles,
+    roleAssignments: relationPayload.roleAssignments,
+    channelPermissions: relationPayload.channelPermissions,
     sourceId: row.sourceId ?? undefined,
     sourceName: row.sourceName ?? undefined,
     sourceUrl: row.sourceUrl ?? undefined

electron/cqrs/queries/handlers/getAllRooms.ts

@@ -1,10 +1,12 @@
 import { DataSource } from 'typeorm';
 import { RoomEntity } from '../../../entities';
 import { rowToRoom } from '../../mappers';
+import { loadRoomRelationsMap } from '../../relations';
 
 export async function handleGetAllRooms(dataSource: DataSource) {
   const repo = dataSource.getRepository(RoomEntity);
   const rows = await repo.find();
+  const relationsByRoomId = await loadRoomRelationsMap(dataSource, rows.map((row) => row.id));
 
-  return rows.map(rowToRoom);
+  return rows.map((row) => rowToRoom(row, relationsByRoomId.get(row.id)));
 }

electron/cqrs/queries/handlers/getMessageById.ts

@@ -2,10 +2,17 @@ import { DataSource } from 'typeorm';
 import { MessageEntity } from '../../../entities';
 import { GetMessageByIdQuery } from '../../types';
 import { rowToMessage } from '../../mappers';
+import { loadMessageReactionsMap } from '../../relations';
 
 export async function handleGetMessageById(query: GetMessageByIdQuery, dataSource: DataSource) {
   const repo = dataSource.getRepository(MessageEntity);
   const row = await repo.findOne({ where: { id: query.payload.messageId } });
 
-  return row ? rowToMessage(row) : null;
+  if (!row) {
+    return null;
+  }
+
+  const reactionsByMessageId = await loadMessageReactionsMap(dataSource, [row.id]);
+
+  return rowToMessage(row, reactionsByMessageId.get(row.id) ?? []);
 }

electron/cqrs/queries/handlers/getMessages.ts

@@ -2,6 +2,7 @@ import { DataSource } from 'typeorm';
 import { MessageEntity } from '../../../entities';
 import { GetMessagesQuery } from '../../types';
 import { rowToMessage } from '../../mappers';
+import { loadMessageReactionsMap } from '../../relations';
 
 export async function handleGetMessages(query: GetMessagesQuery, dataSource: DataSource) {
   const repo = dataSource.getRepository(MessageEntity);
@@ -12,6 +13,7 @@ export async function handleGetMessages(query: GetMessagesQuery, dataSource: Dat
     take: limit,
     skip: offset
   });
+  const reactionsByMessageId = await loadMessageReactionsMap(dataSource, rows.map((row) => row.id));
 
-  return rows.map(rowToMessage);
+  return rows.map((row) => rowToMessage(row, reactionsByMessageId.get(row.id) ?? []));
 }

electron/cqrs/queries/handlers/getMessagesSince.ts

@@ -2,6 +2,7 @@ import { DataSource, MoreThan } from 'typeorm';
 import { MessageEntity } from '../../../entities';
 import { GetMessagesSinceQuery } from '../../types';
 import { rowToMessage } from '../../mappers';
+import { loadMessageReactionsMap } from '../../relations';
 
 export async function handleGetMessagesSince(query: GetMessagesSinceQuery, dataSource: DataSource) {
   const repo = dataSource.getRepository(MessageEntity);
@@ -13,6 +14,7 @@ export async function handleGetMessagesSince(query: GetMessagesSinceQuery, dataS
     },
     order: { timestamp: 'ASC' }
   });
+  const reactionsByMessageId = await loadMessageReactionsMap(dataSource, rows.map((row) => row.id));
 
-  return rows.map(rowToMessage);
+  return rows.map((row) => rowToMessage(row, reactionsByMessageId.get(row.id) ?? []));
 }

electron/cqrs/queries/handlers/getRoom.ts

@@ -2,10 +2,17 @@ import { DataSource } from 'typeorm';
 import { RoomEntity } from '../../../entities';
 import { GetRoomQuery } from '../../types';
 import { rowToRoom } from '../../mappers';
+import { loadRoomRelationsMap } from '../../relations';
 
 export async function handleGetRoom(query: GetRoomQuery, dataSource: DataSource) {
   const repo = dataSource.getRepository(RoomEntity);
   const row = await repo.findOne({ where: { id: query.payload.roomId } });
 
-  return row ? rowToRoom(row) : null;
+  if (!row) {
+    return null;
+  }
+
+  const relationsByRoomId = await loadRoomRelationsMap(dataSource, [row.id]);
+
+  return rowToRoom(row, relationsByRoomId.get(row.id));
 }

electron/cqrs/types.ts

@@ -50,6 +50,7 @@ export interface MessagePayload {
   reactions?: ReactionPayload[];
   isDeleted?: boolean;
   replyToId?: string;
+  linkMetadata?: { url: string; title?: string; description?: string; imageUrl?: string; siteName?: string; failed?: boolean }[];
 }
 
 export interface ReactionPayload {
@@ -61,6 +62,44 @@ export interface ReactionPayload {
   timestamp: number;
 }
 
+export type PermissionStatePayload = 'allow' | 'deny' | 'inherit';
+
+export type RoomPermissionKeyPayload =
+  | 'manageServer'
+  | 'manageRoles'
+  | 'manageChannels'
+  | 'manageIcon'
+  | 'kickMembers'
+  | 'banMembers'
+  | 'manageBans'
+  | 'deleteMessages'
+  | 'joinVoice'
+  | 'shareScreen'
+  | 'uploadFiles';
+
+export interface AccessRolePayload {
+  id: string;
+  name: string;
+  color?: string;
+  position: number;
+  isSystem?: boolean;
+  permissions?: Partial<Record<RoomPermissionKeyPayload, PermissionStatePayload>>;
+}
+
+export interface RoleAssignmentPayload {
+  userId: string;
+  oderId?: string;
+  roleIds: string[];
+}
+
+export interface ChannelPermissionPayload {
+  channelId: string;
+  targetType: 'role' | 'user';
+  targetId: string;
+  permission: RoomPermissionKeyPayload;
+  value: PermissionStatePayload;
+}
+
 export interface UserPayload {
   id: string;
   oderId?: string;
@@ -92,9 +131,13 @@ export interface RoomPayload {
   maxUsers?: number;
   icon?: string;
   iconUpdatedAt?: number;
+  slowModeInterval?: number;
   permissions?: unknown;
   channels?: unknown[];
   members?: unknown[];
+  roles?: AccessRolePayload[];
+  roleAssignments?: RoleAssignmentPayload[];
+  channelPermissions?: ChannelPermissionPayload[];
   sourceId?: string;
   sourceName?: string;
   sourceUrl?: string;

electron/data-source.ts

@@ -17,6 +17,11 @@ import {
   MessageEntity,
   UserEntity,
   RoomEntity,
+  RoomChannelEntity,
+  RoomMemberEntity,
+  RoomRoleEntity,
+  RoomUserRoleEntity,
+  RoomChannelPermissionEntity,
   ReactionEntity,
   BanEntity,
   AttachmentEntity,
@@ -38,6 +43,11 @@ export const AppDataSource = new DataSource({
     MessageEntity,
     UserEntity,
     RoomEntity,
+    RoomChannelEntity,
+    RoomMemberEntity,
+    RoomRoleEntity,
+    RoomUserRoleEntity,
+    RoomChannelPermissionEntity,
     ReactionEntity,
     BanEntity,
     AttachmentEntity,

electron/db/database.ts

@@ -7,6 +7,11 @@ import {
   MessageEntity,
   UserEntity,
   RoomEntity,
+  RoomChannelEntity,
+  RoomMemberEntity,
+  RoomRoleEntity,
+  RoomUserRoleEntity,
+  RoomChannelPermissionEntity,
   ReactionEntity,
   BanEntity,
   AttachmentEntity,
@@ -40,6 +45,11 @@ export async function initializeDatabase(): Promise<void> {
       MessageEntity,
       UserEntity,
       RoomEntity,
+      RoomChannelEntity,
+      RoomMemberEntity,
+      RoomRoleEntity,
+      RoomUserRoleEntity,
+      RoomChannelPermissionEntity,
       ReactionEntity,
       BanEntity,
       AttachmentEntity,

electron/entities/MessageEntity.ts

@@ -30,12 +30,12 @@ export class MessageEntity {
   @Column('integer', { nullable: true })
   editedAt!: number | null;
 
-  @Column('text', { default: '[]' })
-  reactions!: string;
-
   @Column('integer', { default: 0 })
   isDeleted!: number;
 
   @Column('text', { nullable: true })
   replyToId!: string | null;
+
+  @Column('text', { nullable: true })
+  linkMetadata!: string | null;
 }

electron/entities/RoomChannelEntity.ts

@@ -0,0 +1,23 @@
+import {
+  Entity,
+  PrimaryColumn,
+  Column
+} from 'typeorm';
+
+@Entity('room_channels')
+export class RoomChannelEntity {
+  @PrimaryColumn('text')
+  roomId!: string;
+
+  @PrimaryColumn('text')
+  channelId!: string;
+
+  @Column('text')
+  name!: string;
+
+  @Column('text')
+  type!: 'text' | 'voice';
+
+  @Column('integer')
+  position!: number;
+}

electron/entities/RoomChannelPermissionEntity.ts

@@ -0,0 +1,26 @@
+import {
+  Column,
+  Entity,
+  PrimaryColumn
+} from 'typeorm';
+
+@Entity('room_channel_permissions')
+export class RoomChannelPermissionEntity {
+  @PrimaryColumn('text')
+  roomId!: string;
+
+  @PrimaryColumn('text')
+  channelId!: string;
+
+  @PrimaryColumn('text')
+  targetType!: 'role' | 'user';
+
+  @PrimaryColumn('text')
+  targetId!: string;
+
+  @PrimaryColumn('text')
+  permission!: string;
+
+  @Column('text')
+  value!: 'allow' | 'deny' | 'inherit';
+}

electron/entities/RoomEntity.ts

@@ -45,14 +45,8 @@ export class RoomEntity {
   @Column('integer', { nullable: true })
   iconUpdatedAt!: number | null;
 
-  @Column('text', { nullable: true })
-  permissions!: string | null;
-
-  @Column('text', { nullable: true })
-  channels!: string | null;
-
-  @Column('text', { nullable: true })
-  members!: string | null;
+  @Column('integer', { default: 0 })
+  slowModeInterval!: number;
 
   @Column('text', { nullable: true })
   sourceId!: string | null;

electron/entities/RoomMemberEntity.ts

@@ -0,0 +1,38 @@
+import {
+  Entity,
+  PrimaryColumn,
+  Column
+} from 'typeorm';
+
+@Entity('room_members')
+export class RoomMemberEntity {
+  @PrimaryColumn('text')
+  roomId!: string;
+
+  @PrimaryColumn('text')
+  memberKey!: string;
+
+  @Column('text')
+  id!: string;
+
+  @Column('text', { nullable: true })
+  oderId!: string | null;
+
+  @Column('text')
+  username!: string;
+
+  @Column('text')
+  displayName!: string;
+
+  @Column('text', { nullable: true })
+  avatarUrl!: string | null;
+
+  @Column('text')
+  role!: 'host' | 'admin' | 'moderator' | 'member';
+
+  @Column('integer')
+  joinedAt!: number;
+
+  @Column('integer')
+  lastSeenAt!: number;
+}

electron/entities/RoomRoleEntity.ts

@@ -0,0 +1,59 @@
+import {
+  Column,
+  Entity,
+  PrimaryColumn
+} from 'typeorm';
+
+@Entity('room_roles')
+export class RoomRoleEntity {
+  @PrimaryColumn('text')
+  roomId!: string;
+
+  @PrimaryColumn('text')
+  roleId!: string;
+
+  @Column('text')
+  name!: string;
+
+  @Column('text', { nullable: true })
+  color!: string | null;
+
+  @Column('integer')
+  position!: number;
+
+  @Column('integer', { default: 0 })
+  isSystem!: number;
+
+  @Column('text', { default: 'inherit' })
+  manageServer!: 'allow' | 'deny' | 'inherit';
+
+  @Column('text', { default: 'inherit' })
+  manageRoles!: 'allow' | 'deny' | 'inherit';
+
+  @Column('text', { default: 'inherit' })
+  manageChannels!: 'allow' | 'deny' | 'inherit';
+
+  @Column('text', { default: 'inherit' })
+  manageIcon!: 'allow' | 'deny' | 'inherit';
+
+  @Column('text', { default: 'inherit' })
+  kickMembers!: 'allow' | 'deny' | 'inherit';
+
+  @Column('text', { default: 'inherit' })
+  banMembers!: 'allow' | 'deny' | 'inherit';
+
+  @Column('text', { default: 'inherit' })
+  manageBans!: 'allow' | 'deny' | 'inherit';
+
+  @Column('text', { default: 'inherit' })
+  deleteMessages!: 'allow' | 'deny' | 'inherit';
+
+  @Column('text', { default: 'inherit' })
+  joinVoice!: 'allow' | 'deny' | 'inherit';
+
+  @Column('text', { default: 'inherit' })
+  shareScreen!: 'allow' | 'deny' | 'inherit';
+
+  @Column('text', { default: 'inherit' })
+  uploadFiles!: 'allow' | 'deny' | 'inherit';
+}

electron/entities/RoomUserRoleEntity.ts

@@ -0,0 +1,23 @@
+import {
+  Column,
+  Entity,
+  PrimaryColumn
+} from 'typeorm';
+
+@Entity('room_user_roles')
+export class RoomUserRoleEntity {
+  @PrimaryColumn('text')
+  roomId!: string;
+
+  @PrimaryColumn('text')
+  userKey!: string;
+
+  @PrimaryColumn('text')
+  roleId!: string;
+
+  @Column('text')
+  userId!: string;
+
+  @Column('text', { nullable: true })
+  oderId!: string | null;
+}

electron/entities/index.ts

@@ -1,6 +1,11 @@
 export { MessageEntity } from './MessageEntity';
 export { UserEntity } from './UserEntity';
 export { RoomEntity } from './RoomEntity';
+export { RoomChannelEntity } from './RoomChannelEntity';
+export { RoomMemberEntity } from './RoomMemberEntity';
+export { RoomRoleEntity } from './RoomRoleEntity';
+export { RoomUserRoleEntity } from './RoomUserRoleEntity';
+export { RoomChannelPermissionEntity } from './RoomChannelPermissionEntity';
 export { ReactionEntity } from './ReactionEntity';
 export { BanEntity } from './BanEntity';
 export { AttachmentEntity } from './AttachmentEntity';

electron/ipc/system.ts

@@ -4,6 +4,8 @@ import {
   desktopCapturer,
   dialog,
   ipcMain,
+  nativeImage,
+  net,
   Notification,
   shell
 } from 'electron';
@@ -39,6 +41,13 @@ import {
   getWindowIconPath,
   updateCloseToTraySetting
 } from '../window/create-window';
+import {
+  deleteSavedTheme,
+  getSavedThemesPath,
+  listSavedThemes,
+  readSavedTheme,
+  writeSavedTheme
+} from '../theme-library';
 
 const DEFAULT_MIME_TYPE = 'application/octet-stream';
 const FILE_CLIPBOARD_FORMATS = [
@@ -325,6 +334,16 @@ export function setupSystemHandlers(): void {
   });
 
   ipcMain.handle('get-app-data-path', () => app.getPath('userData'));
+  ipcMain.handle('get-saved-themes-path', async () => await getSavedThemesPath());
+  ipcMain.handle('list-saved-themes', async () => await listSavedThemes());
+  ipcMain.handle('read-saved-theme', async (_event, fileName: string) => await readSavedTheme(fileName));
+  ipcMain.handle('write-saved-theme', async (_event, fileName: string, text: string) => {
+    return await writeSavedTheme(fileName, text);
+  });
+
+  ipcMain.handle('delete-saved-theme', async (_event, fileName: string) => {
+    return await deleteSavedTheme(fileName);
+  });
 
   ipcMain.handle('get-desktop-settings', () => getDesktopSettingsSnapshot());
 
@@ -486,4 +505,34 @@ export function setupSystemHandlers(): void {
     await fsp.mkdir(dirPath, { recursive: true });
     return true;
   });
+
+  ipcMain.handle('copy-image-to-clipboard', (_event, srcURL: string) => {
+    if (typeof srcURL !== 'string' || !srcURL) {
+      return false;
+    }
+
+    return new Promise<boolean>((resolve) => {
+      const request = net.request(srcURL);
+
+      request.on('response', (response) => {
+        const chunks: Buffer[] = [];
+
+        response.on('data', (chunk) => chunks.push(chunk));
+        response.on('end', () => {
+          const image = nativeImage.createFromBuffer(Buffer.concat(chunks));
+
+          if (!image.isEmpty()) {
+            clipboard.writeImage(image);
+            resolve(true);
+          } else {
+            resolve(false);
+          }
+        });
+        response.on('error', () => resolve(false));
+      });
+
+      request.on('error', () => resolve(false));
+      request.end();
+    });
+  });
 }

electron/migrations/1000000000003-NormalizeArrayColumns.ts

@@ -0,0 +1,396 @@
+import { randomUUID } from 'crypto';
+import { MigrationInterface, QueryRunner } from 'typeorm';
+
+type LegacyMessageRow = {
+  id: string;
+  reactions: string | null;
+};
+
+type LegacyRoomRow = {
+  id: string;
+  channels: string | null;
+  members: string | null;
+};
+
+type ChannelType = 'text' | 'voice';
+type RoomMemberRole = 'host' | 'admin' | 'moderator' | 'member';
+
+type LegacyReaction = {
+  id?: unknown;
+  oderId?: unknown;
+  userId?: unknown;
+  emoji?: unknown;
+  timestamp?: unknown;
+};
+
+type LegacyRoomChannel = {
+  id?: unknown;
+  name?: unknown;
+  type?: unknown;
+  position?: unknown;
+};
+
+type LegacyRoomMember = {
+  id?: unknown;
+  oderId?: unknown;
+  username?: unknown;
+  displayName?: unknown;
+  avatarUrl?: unknown;
+  role?: unknown;
+  joinedAt?: unknown;
+  lastSeenAt?: unknown;
+};
+
+function parseArray<T>(raw: string | null): T[] {
+  try {
+    const parsed = JSON.parse(raw || '[]');
+
+    return Array.isArray(parsed) ? parsed as T[] : [];
+  } catch {
+    return [];
+  }
+}
+
+function isFiniteNumber(value: unknown): value is number {
+  return typeof value === 'number' && Number.isFinite(value);
+}
+
+function normalizeChannelName(name: string): string {
+  return name.trim().replace(/\s+/g, ' ');
+}
+
+function channelNameKey(type: ChannelType, name: string): string {
+  return `${type}:${normalizeChannelName(name).toLocaleLowerCase()}`;
+}
+
+function memberKey(member: { id?: string; oderId?: string }): string {
+  return member.oderId?.trim() || member.id?.trim() || '';
+}
+
+function fallbackDisplayName(member: Partial<{ displayName: string; username: string; oderId: string; id: string }>): string {
+  return member.displayName || member.username || member.oderId || member.id || 'User';
+}
+
+function fallbackUsername(member: Partial<{ displayName: string; username: string; oderId: string; id: string }>): string {
+  const base = fallbackDisplayName(member)
+    .trim()
+    .toLowerCase()
+    .replace(/\s+/g, '_');
+
+  return base || member.oderId || member.id || 'user';
+}
+
+function normalizeRoomMemberRole(value: unknown): RoomMemberRole {
+  return value === 'host' || value === 'admin' || value === 'moderator' || value === 'member'
+    ? value
+    : 'member';
+}
+
+function mergeRoomMemberRole(
+  existingRole: RoomMemberRole,
+  incomingRole: RoomMemberRole,
+  preferIncoming: boolean
+): RoomMemberRole {
+  if (existingRole === incomingRole) {
+    return existingRole;
+  }
+
+  if (incomingRole === 'member' && existingRole !== 'member') {
+    return existingRole;
+  }
+
+  if (existingRole === 'member' && incomingRole !== 'member') {
+    return incomingRole;
+  }
+
+  return preferIncoming ? incomingRole : existingRole;
+}
+
+function compareRoomMembers(
+  firstMember: {
+    id: string;
+    oderId?: string;
+    displayName: string;
+  },
+  secondMember: {
+    id: string;
+    oderId?: string;
+    displayName: string;
+  }
+): number {
+  const displayNameCompare = firstMember.displayName.localeCompare(secondMember.displayName, undefined, { sensitivity: 'base' });
+
+  if (displayNameCompare !== 0) {
+    return displayNameCompare;
+  }
+
+  return memberKey(firstMember).localeCompare(memberKey(secondMember));
+}
+
+function normalizeMessageReactions(messageId: string, raw: string | null) {
+  const reactions = parseArray<LegacyReaction>(raw);
+  const seen = new Set<string>();
+
+  return reactions.flatMap((reaction) => {
+    const emoji = typeof reaction.emoji === 'string' ? reaction.emoji : '';
+    const userId = typeof reaction.userId === 'string' ? reaction.userId : '';
+    const dedupeKey = `${userId}:${emoji}`;
+
+    if (!emoji || seen.has(dedupeKey)) {
+      return [];
+    }
+
+    seen.add(dedupeKey);
+
+    return [{
+      id: typeof reaction.id === 'string' && reaction.id.trim() ? reaction.id : randomUUID(),
+      messageId,
+      oderId: typeof reaction.oderId === 'string' ? reaction.oderId : null,
+      userId: userId || null,
+      emoji,
+      timestamp: isFiniteNumber(reaction.timestamp) ? reaction.timestamp : 0
+    }];
+  });
+}
+
+function normalizeRoomChannels(raw: string | null) {
+  const channels = parseArray<LegacyRoomChannel>(raw);
+  const seenIds = new Set<string>();
+  const seenNames = new Set<string>();
+
+  return channels.flatMap((channel, index) => {
+    const id = typeof channel.id === 'string' ? channel.id.trim() : '';
+    const name = typeof channel.name === 'string' ? normalizeChannelName(channel.name) : '';
+    const type = channel.type === 'text' || channel.type === 'voice' ? channel.type : null;
+    const position = isFiniteNumber(channel.position) ? channel.position : index;
+    const nameKey = type ? channelNameKey(type, name) : '';
+
+    if (!id || !name || !type || seenIds.has(id) || seenNames.has(nameKey)) {
+      return [];
+    }
+
+    seenIds.add(id);
+    seenNames.add(nameKey);
+
+    return [{
+      channelId: id,
+      name,
+      type,
+      position
+    }];
+  });
+}
+
+function normalizeRoomMembers(raw: string | null, now = Date.now()) {
+  const members = parseArray<LegacyRoomMember>(raw);
+  const membersByKey = new Map<string, {
+    id: string;
+    oderId?: string;
+    username: string;
+    displayName: string;
+    avatarUrl?: string;
+    role: RoomMemberRole;
+    joinedAt: number;
+    lastSeenAt: number;
+  }>();
+
+  for (const rawMember of members) {
+    const normalizedId = typeof rawMember.id === 'string' ? rawMember.id.trim() : '';
+    const normalizedOderId = typeof rawMember.oderId === 'string' ? rawMember.oderId.trim() : '';
+    const key = normalizedOderId || normalizedId;
+
+    if (!key) {
+      continue;
+    }
+
+    const lastSeenAt = isFiniteNumber(rawMember.lastSeenAt)
+      ? rawMember.lastSeenAt
+      : isFiniteNumber(rawMember.joinedAt)
+        ? rawMember.joinedAt
+        : now;
+    const joinedAt = isFiniteNumber(rawMember.joinedAt) ? rawMember.joinedAt : lastSeenAt;
+    const username = typeof rawMember.username === 'string' ? rawMember.username.trim() : '';
+    const displayName = typeof rawMember.displayName === 'string' ? rawMember.displayName.trim() : '';
+    const avatarUrl = typeof rawMember.avatarUrl === 'string' ? rawMember.avatarUrl.trim() : '';
+    const nextMember = {
+      id: normalizedId || key,
+      oderId: normalizedOderId || undefined,
+      username: username || fallbackUsername({ id: normalizedId || key, oderId: normalizedOderId || undefined, displayName }),
+      displayName: displayName || fallbackDisplayName({ id: normalizedId || key, oderId: normalizedOderId || undefined, username }),
+      avatarUrl: avatarUrl || undefined,
+      role: normalizeRoomMemberRole(rawMember.role),
+      joinedAt,
+      lastSeenAt
+    };
+    const existingMember = membersByKey.get(key);
+
+    if (!existingMember) {
+      membersByKey.set(key, nextMember);
+      continue;
+    }
+
+    const preferIncoming = nextMember.lastSeenAt >= existingMember.lastSeenAt;
+
+    membersByKey.set(key, {
+      id: existingMember.id || nextMember.id,
+      oderId: nextMember.oderId || existingMember.oderId,
+      username: preferIncoming
+        ? (nextMember.username || existingMember.username)
+        : (existingMember.username || nextMember.username),
+      displayName: preferIncoming
+        ? (nextMember.displayName || existingMember.displayName)
+        : (existingMember.displayName || nextMember.displayName),
+      avatarUrl: preferIncoming
+        ? (nextMember.avatarUrl || existingMember.avatarUrl)
+        : (existingMember.avatarUrl || nextMember.avatarUrl),
+      role: mergeRoomMemberRole(existingMember.role, nextMember.role, preferIncoming),
+      joinedAt: Math.min(existingMember.joinedAt, nextMember.joinedAt),
+      lastSeenAt: Math.max(existingMember.lastSeenAt, nextMember.lastSeenAt)
+    });
+  }
+
+  return Array.from(membersByKey.values()).sort(compareRoomMembers);
+}
+
+export class NormalizeArrayColumns1000000000003 implements MigrationInterface {
+  name = 'NormalizeArrayColumns1000000000003';
+
+  public async up(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(`
+      CREATE TABLE IF NOT EXISTS "room_channels" (
+        "roomId"    TEXT NOT NULL,
+        "channelId" TEXT NOT NULL,
+        "name"      TEXT NOT NULL,
+        "type"      TEXT NOT NULL,
+        "position"  INTEGER NOT NULL,
+        PRIMARY KEY ("roomId", "channelId")
+      )
+    `);
+    await queryRunner.query(`CREATE INDEX IF NOT EXISTS "idx_room_channels_roomId" ON "room_channels" ("roomId")`);
+
+    await queryRunner.query(`
+      CREATE TABLE IF NOT EXISTS "room_members" (
+        "roomId"     TEXT NOT NULL,
+        "memberKey"  TEXT NOT NULL,
+        "id"         TEXT NOT NULL,
+        "oderId"     TEXT,
+        "username"   TEXT NOT NULL,
+        "displayName" TEXT NOT NULL,
+        "avatarUrl"  TEXT,
+        "role"       TEXT NOT NULL,
+        "joinedAt"   INTEGER NOT NULL,
+        "lastSeenAt" INTEGER NOT NULL,
+        PRIMARY KEY ("roomId", "memberKey")
+      )
+    `);
+    await queryRunner.query(`CREATE INDEX IF NOT EXISTS "idx_room_members_roomId" ON "room_members" ("roomId")`);
+
+    const messageRows = await queryRunner.query(`SELECT "id", "reactions" FROM "messages"`) as LegacyMessageRow[];
+
+    for (const row of messageRows) {
+      const reactions = normalizeMessageReactions(row.id, row.reactions);
+
+      for (const reaction of reactions) {
+        const existing = await queryRunner.query(
+          `SELECT 1 FROM "reactions" WHERE "messageId" = ? AND "userId" IS ? AND "emoji" = ? LIMIT 1`,
+          [reaction.messageId, reaction.userId, reaction.emoji]
+        ) as Array<{ 1: number }>;
+
+        if (existing.length > 0) {
+          continue;
+        }
+
+        await queryRunner.query(
+          `INSERT INTO "reactions" ("id", "messageId", "oderId", "userId", "emoji", "timestamp") VALUES (?, ?, ?, ?, ?, ?)`,
+          [reaction.id, reaction.messageId, reaction.oderId, reaction.userId, reaction.emoji, reaction.timestamp]
+        );
+      }
+    }
+
+    const roomRows = await queryRunner.query(`SELECT "id", "channels", "members" FROM "rooms"`) as LegacyRoomRow[];
+
+    for (const row of roomRows) {
+      for (const channel of normalizeRoomChannels(row.channels)) {
+        await queryRunner.query(
+          `INSERT OR REPLACE INTO "room_channels" ("roomId", "channelId", "name", "type", "position") VALUES (?, ?, ?, ?, ?)`,
+          [row.id, channel.channelId, channel.name, channel.type, channel.position]
+        );
+      }
+
+      for (const member of normalizeRoomMembers(row.members)) {
+        await queryRunner.query(
+          `INSERT OR REPLACE INTO "room_members" ("roomId", "memberKey", "id", "oderId", "username", "displayName", "avatarUrl", "role", "joinedAt", "lastSeenAt") VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`,
+          [
+            row.id,
+            memberKey(member),
+            member.id,
+            member.oderId ?? null,
+            member.username,
+            member.displayName,
+            member.avatarUrl ?? null,
+            member.role,
+            member.joinedAt,
+            member.lastSeenAt
+          ]
+        );
+      }
+    }
+
+    await queryRunner.query(`
+      CREATE TABLE "messages_next" (
+        "id"         TEXT PRIMARY KEY NOT NULL,
+        "roomId"     TEXT NOT NULL,
+        "channelId"  TEXT,
+        "senderId"   TEXT NOT NULL,
+        "senderName" TEXT NOT NULL,
+        "content"    TEXT NOT NULL,
+        "timestamp"  INTEGER NOT NULL,
+        "editedAt"   INTEGER,
+        "isDeleted"  INTEGER NOT NULL DEFAULT 0,
+        "replyToId"  TEXT
+      )
+    `);
+    await queryRunner.query(`
+      INSERT INTO "messages_next" ("id", "roomId", "channelId", "senderId", "senderName", "content", "timestamp", "editedAt", "isDeleted", "replyToId")
+      SELECT "id", "roomId", "channelId", "senderId", "senderName", "content", "timestamp", "editedAt", "isDeleted", "replyToId"
+      FROM "messages"
+    `);
+    await queryRunner.query(`DROP TABLE "messages"`);
+    await queryRunner.query(`ALTER TABLE "messages_next" RENAME TO "messages"`);
+    await queryRunner.query(`CREATE INDEX IF NOT EXISTS "idx_messages_roomId" ON "messages" ("roomId")`);
+
+    await queryRunner.query(`
+      CREATE TABLE "rooms_next" (
+        "id"            TEXT PRIMARY KEY NOT NULL,
+        "name"          TEXT NOT NULL,
+        "description"   TEXT,
+        "topic"         TEXT,
+        "hostId"        TEXT NOT NULL,
+        "password"      TEXT,
+        "isPrivate"     INTEGER NOT NULL DEFAULT 0,
+        "createdAt"     INTEGER NOT NULL,
+        "userCount"     INTEGER NOT NULL DEFAULT 0,
+        "maxUsers"      INTEGER,
+        "icon"          TEXT,
+        "iconUpdatedAt" INTEGER,
+        "permissions"   TEXT,
+        "hasPassword"   INTEGER NOT NULL DEFAULT 0,
+        "sourceId"      TEXT,
+        "sourceName"    TEXT,
+        "sourceUrl"     TEXT
+      )
+    `);
+    await queryRunner.query(`
+      INSERT INTO "rooms_next" ("id", "name", "description", "topic", "hostId", "password", "isPrivate", "createdAt", "userCount", "maxUsers", "icon", "iconUpdatedAt", "permissions", "hasPassword", "sourceId", "sourceName", "sourceUrl")
+      SELECT "id", "name", "description", "topic", "hostId", "password", "isPrivate", "createdAt", "userCount", "maxUsers", "icon", "iconUpdatedAt", "permissions", "hasPassword", "sourceId", "sourceName", "sourceUrl"
+      FROM "rooms"
+    `);
+    await queryRunner.query(`DROP TABLE "rooms"`);
+    await queryRunner.query(`ALTER TABLE "rooms_next" RENAME TO "rooms"`);
+  }
+
+  public async down(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(`DROP TABLE IF EXISTS "room_members"`);
+    await queryRunner.query(`DROP TABLE IF EXISTS "room_channels"`);
+  }
+}

electron/migrations/1000000000004-NormalizeRoomAccessControl.ts

@@ -0,0 +1,310 @@
+import { MigrationInterface, QueryRunner } from 'typeorm';
+
+type LegacyRoomRow = {
+  id: string;
+  name: string;
+  description: string | null;
+  topic: string | null;
+  hostId: string;
+  password: string | null;
+  hasPassword: number;
+  isPrivate: number;
+  createdAt: number;
+  userCount: number;
+  maxUsers: number | null;
+  icon: string | null;
+  iconUpdatedAt: number | null;
+  permissions: string | null;
+  sourceId: string | null;
+  sourceName: string | null;
+  sourceUrl: string | null;
+};
+
+type RoomMemberRow = {
+  roomId: string;
+  memberKey: string;
+  id: string;
+  oderId: string | null;
+  role: string;
+};
+
+type LegacyRoomPermissions = {
+  adminsManageRooms?: boolean;
+  moderatorsManageRooms?: boolean;
+  adminsManageIcon?: boolean;
+  moderatorsManageIcon?: boolean;
+  allowVoice?: boolean;
+  allowScreenShare?: boolean;
+  allowFileUploads?: boolean;
+  slowModeInterval?: number;
+};
+
+const SYSTEM_ROLE_IDS = {
+  everyone: 'system-everyone',
+  moderator: 'system-moderator',
+  admin: 'system-admin'
+} as const;
+
+function parseLegacyPermissions(rawPermissions: string | null): LegacyRoomPermissions {
+  try {
+    const parsed = JSON.parse(rawPermissions || '{}') as Record<string, unknown>;
+
+    return {
+      adminsManageRooms: parsed['adminsManageRooms'] === true,
+      moderatorsManageRooms: parsed['moderatorsManageRooms'] === true,
+      adminsManageIcon: parsed['adminsManageIcon'] === true,
+      moderatorsManageIcon: parsed['moderatorsManageIcon'] === true,
+      allowVoice: parsed['allowVoice'] !== false,
+      allowScreenShare: parsed['allowScreenShare'] !== false,
+      allowFileUploads: parsed['allowFileUploads'] !== false,
+      slowModeInterval: typeof parsed['slowModeInterval'] === 'number' && Number.isFinite(parsed['slowModeInterval'])
+        ? parsed['slowModeInterval']
+        : 0
+    };
+  } catch {
+    return {
+      allowVoice: true,
+      allowScreenShare: true,
+      allowFileUploads: true,
+      slowModeInterval: 0
+    };
+  }
+}
+
+function buildDefaultRoomRoles(legacyPermissions: LegacyRoomPermissions) {
+  return [
+    {
+      roleId: SYSTEM_ROLE_IDS.everyone,
+      name: '@everyone',
+      color: '#6b7280',
+      position: 0,
+      isSystem: 1,
+      manageServer: 'inherit',
+      manageRoles: 'inherit',
+      manageChannels: 'inherit',
+      manageIcon: 'inherit',
+      kickMembers: 'inherit',
+      banMembers: 'inherit',
+      manageBans: 'inherit',
+      deleteMessages: 'inherit',
+      joinVoice: legacyPermissions.allowVoice === false ? 'deny' : 'allow',
+      shareScreen: legacyPermissions.allowScreenShare === false ? 'deny' : 'allow',
+      uploadFiles: legacyPermissions.allowFileUploads === false ? 'deny' : 'allow'
+    },
+    {
+      roleId: SYSTEM_ROLE_IDS.moderator,
+      name: 'Moderator',
+      color: '#10b981',
+      position: 200,
+      isSystem: 1,
+      manageServer: 'inherit',
+      manageRoles: 'inherit',
+      manageChannels: legacyPermissions.moderatorsManageRooms ? 'allow' : 'inherit',
+      manageIcon: legacyPermissions.moderatorsManageIcon ? 'allow' : 'inherit',
+      kickMembers: 'allow',
+      banMembers: 'inherit',
+      manageBans: 'inherit',
+      deleteMessages: 'allow',
+      joinVoice: 'inherit',
+      shareScreen: 'inherit',
+      uploadFiles: 'inherit'
+    },
+    {
+      roleId: SYSTEM_ROLE_IDS.admin,
+      name: 'Admin',
+      color: '#60a5fa',
+      position: 300,
+      isSystem: 1,
+      manageServer: 'inherit',
+      manageRoles: 'inherit',
+      manageChannels: legacyPermissions.adminsManageRooms ? 'allow' : 'inherit',
+      manageIcon: legacyPermissions.adminsManageIcon ? 'allow' : 'inherit',
+      kickMembers: 'allow',
+      banMembers: 'allow',
+      manageBans: 'allow',
+      deleteMessages: 'allow',
+      joinVoice: 'inherit',
+      shareScreen: 'inherit',
+      uploadFiles: 'inherit'
+    }
+  ];
+}
+
+function roleIdsForMemberRole(role: string): string[] {
+  if (role === 'admin') {
+    return [SYSTEM_ROLE_IDS.admin];
+  }
+
+  if (role === 'moderator') {
+    return [SYSTEM_ROLE_IDS.moderator];
+  }
+
+  return [];
+}
+
+export class NormalizeRoomAccessControl1000000000004 implements MigrationInterface {
+  name = 'NormalizeRoomAccessControl1000000000004';
+
+  public async up(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(`
+      CREATE TABLE IF NOT EXISTS "room_roles" (
+        "roomId" TEXT NOT NULL,
+        "roleId" TEXT NOT NULL,
+        "name" TEXT NOT NULL,
+        "color" TEXT,
+        "position" INTEGER NOT NULL,
+        "isSystem" INTEGER NOT NULL DEFAULT 0,
+        "manageServer" TEXT NOT NULL DEFAULT 'inherit',
+        "manageRoles" TEXT NOT NULL DEFAULT 'inherit',
+        "manageChannels" TEXT NOT NULL DEFAULT 'inherit',
+        "manageIcon" TEXT NOT NULL DEFAULT 'inherit',
+        "kickMembers" TEXT NOT NULL DEFAULT 'inherit',
+        "banMembers" TEXT NOT NULL DEFAULT 'inherit',
+        "manageBans" TEXT NOT NULL DEFAULT 'inherit',
+        "deleteMessages" TEXT NOT NULL DEFAULT 'inherit',
+        "joinVoice" TEXT NOT NULL DEFAULT 'inherit',
+        "shareScreen" TEXT NOT NULL DEFAULT 'inherit',
+        "uploadFiles" TEXT NOT NULL DEFAULT 'inherit',
+        PRIMARY KEY ("roomId", "roleId")
+      )
+    `);
+    await queryRunner.query(`CREATE INDEX IF NOT EXISTS "idx_room_roles_roomId" ON "room_roles" ("roomId")`);
+
+    await queryRunner.query(`
+      CREATE TABLE IF NOT EXISTS "room_user_roles" (
+        "roomId" TEXT NOT NULL,
+        "userKey" TEXT NOT NULL,
+        "roleId" TEXT NOT NULL,
+        "userId" TEXT NOT NULL,
+        "oderId" TEXT,
+        PRIMARY KEY ("roomId", "userKey", "roleId")
+      )
+    `);
+    await queryRunner.query(`CREATE INDEX IF NOT EXISTS "idx_room_user_roles_roomId" ON "room_user_roles" ("roomId")`);
+
+    await queryRunner.query(`
+      CREATE TABLE IF NOT EXISTS "room_channel_permissions" (
+        "roomId" TEXT NOT NULL,
+        "channelId" TEXT NOT NULL,
+        "targetType" TEXT NOT NULL,
+        "targetId" TEXT NOT NULL,
+        "permission" TEXT NOT NULL,
+        "value" TEXT NOT NULL,
+        PRIMARY KEY ("roomId", "channelId", "targetType", "targetId", "permission")
+      )
+    `);
+    await queryRunner.query(`CREATE INDEX IF NOT EXISTS "idx_room_channel_permissions_roomId" ON "room_channel_permissions" ("roomId")`);
+
+    const rooms = await queryRunner.query(`
+      SELECT "id", "name", "description", "topic", "hostId", "password", "hasPassword", "isPrivate", "createdAt", "userCount", "maxUsers", "icon", "iconUpdatedAt", "permissions", "sourceId", "sourceName", "sourceUrl"
+      FROM "rooms"
+    `) as LegacyRoomRow[];
+    const members = await queryRunner.query(`
+      SELECT "roomId", "memberKey", "id", "oderId", "role"
+      FROM "room_members"
+    `) as RoomMemberRow[];
+
+    for (const room of rooms) {
+      const legacyPermissions = parseLegacyPermissions(room.permissions);
+      const roles = buildDefaultRoomRoles(legacyPermissions);
+
+      for (const role of roles) {
+        await queryRunner.query(
+          `INSERT OR REPLACE INTO "room_roles" ("roomId", "roleId", "name", "color", "position", "isSystem", "manageServer", "manageRoles", "manageChannels", "manageIcon", "kickMembers", "banMembers", "manageBans", "deleteMessages", "joinVoice", "shareScreen", "uploadFiles") VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`,
+          [
+            room.id,
+            role.roleId,
+            role.name,
+            role.color,
+            role.position,
+            role.isSystem,
+            role.manageServer,
+            role.manageRoles,
+            role.manageChannels,
+            role.manageIcon,
+            role.kickMembers,
+            role.banMembers,
+            role.manageBans,
+            role.deleteMessages,
+            role.joinVoice,
+            role.shareScreen,
+            role.uploadFiles
+          ]
+        );
+      }
+
+      for (const member of members.filter((candidateMember) => candidateMember.roomId === room.id)) {
+        for (const roleId of roleIdsForMemberRole(member.role)) {
+          await queryRunner.query(
+            `INSERT OR REPLACE INTO "room_user_roles" ("roomId", "userKey", "roleId", "userId", "oderId") VALUES (?, ?, ?, ?, ?)`,
+            [
+              room.id,
+              member.memberKey,
+              roleId,
+              member.id,
+              member.oderId
+            ]
+          );
+        }
+      }
+    }
+
+    await queryRunner.query(`
+      CREATE TABLE "rooms_next" (
+        "id" TEXT PRIMARY KEY NOT NULL,
+        "name" TEXT NOT NULL,
+        "description" TEXT,
+        "topic" TEXT,
+        "hostId" TEXT NOT NULL,
+        "password" TEXT,
+        "hasPassword" INTEGER NOT NULL DEFAULT 0,
+        "isPrivate" INTEGER NOT NULL DEFAULT 0,
+        "createdAt" INTEGER NOT NULL,
+        "userCount" INTEGER NOT NULL DEFAULT 0,
+        "maxUsers" INTEGER,
+        "icon" TEXT,
+        "iconUpdatedAt" INTEGER,
+        "slowModeInterval" INTEGER NOT NULL DEFAULT 0,
+        "sourceId" TEXT,
+        "sourceName" TEXT,
+        "sourceUrl" TEXT
+      )
+    `);
+
+    for (const room of rooms) {
+      const legacyPermissions = parseLegacyPermissions(room.permissions);
+
+      await queryRunner.query(
+        `INSERT INTO "rooms_next" ("id", "name", "description", "topic", "hostId", "password", "hasPassword", "isPrivate", "createdAt", "userCount", "maxUsers", "icon", "iconUpdatedAt", "slowModeInterval", "sourceId", "sourceName", "sourceUrl") VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`,
+        [
+          room.id,
+          room.name,
+          room.description,
+          room.topic,
+          room.hostId,
+          room.password,
+          room.hasPassword,
+          room.isPrivate,
+          room.createdAt,
+          room.userCount,
+          room.maxUsers,
+          room.icon,
+          room.iconUpdatedAt,
+          legacyPermissions.slowModeInterval ?? 0,
+          room.sourceId,
+          room.sourceName,
+          room.sourceUrl
+        ]
+      );
+    }
+
+    await queryRunner.query(`DROP TABLE "rooms"`);
+    await queryRunner.query(`ALTER TABLE "rooms_next" RENAME TO "rooms"`);
+  }
+
+  public async down(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(`DROP TABLE IF EXISTS "room_channel_permissions"`);
+    await queryRunner.query(`DROP TABLE IF EXISTS "room_user_roles"`);
+    await queryRunner.query(`DROP TABLE IF EXISTS "room_roles"`);
+  }
+}

electron/migrations/1000000000005-AddLinkMetadata.ts

@@ -0,0 +1,11 @@
+import { MigrationInterface, QueryRunner } from 'typeorm';
+
+export class AddLinkMetadata1000000000005 implements MigrationInterface {
+  async up(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(`ALTER TABLE "messages" ADD COLUMN "linkMetadata" text`);
+  }
+
+  async down(queryRunner: QueryRunner): Promise<void> {
+    // SQLite does not support DROP COLUMN; column is nullable and harmless.
+  }
+}

electron/preload.ts

@@ -102,6 +102,12 @@ export interface WindowStateSnapshot {
   isMinimized: boolean;
 }
 
+export interface SavedThemeFileDescriptor {
+  fileName: string;
+  modifiedAt: number;
+  path: string;
+}
+
 function readLinuxDisplayServer(): string {
   if (process.platform !== 'linux') {
     return 'N/A';
@@ -118,6 +124,22 @@ function readLinuxDisplayServer(): string {
   }
 }
 
+export interface ContextMenuParams {
+  posX: number;
+  posY: number;
+  isEditable: boolean;
+  selectionText: string;
+  linkURL: string;
+  mediaType: string;
+  srcURL: string;
+  editFlags: {
+    canCut: boolean;
+    canCopy: boolean;
+    canPaste: boolean;
+    canSelectAll: boolean;
+  };
+}
+
 export interface ElectronAPI {
   linuxDisplayServer: string;
   minimizeWindow: () => void;
@@ -134,6 +156,11 @@ export interface ElectronAPI {
   onLinuxScreenShareMonitorAudioChunk: (listener: (payload: LinuxScreenShareMonitorAudioChunkPayload) => void) => () => void;
   onLinuxScreenShareMonitorAudioEnded: (listener: (payload: LinuxScreenShareMonitorAudioEndedPayload) => void) => () => void;
   getAppDataPath: () => Promise<string>;
+  getSavedThemesPath: () => Promise<string>;
+  listSavedThemes: () => Promise<SavedThemeFileDescriptor[]>;
+  readSavedTheme: (fileName: string) => Promise<string>;
+  writeSavedTheme: (fileName: string, text: string) => Promise<boolean>;
+  deleteSavedTheme: (fileName: string) => Promise<boolean>;
   consumePendingDeepLink: () => Promise<string | null>;
   getDesktopSettings: () => Promise<{
     autoUpdateMode: 'auto' | 'off' | 'version';
@@ -183,6 +210,9 @@ export interface ElectronAPI {
   deleteFile: (filePath: string) => Promise<boolean>;
   ensureDir: (dirPath: string) => Promise<boolean>;
 
+  onContextMenu: (listener: (params: ContextMenuParams) => void) => () => void;
+  copyImageToClipboard: (srcURL: string) => Promise<boolean>;
+
   command: <T = unknown>(command: Command) => Promise<T>;
   query: <T = unknown>(query: Query) => Promise<T>;
 }
@@ -230,6 +260,11 @@ const electronAPI: ElectronAPI = {
     };
   },
   getAppDataPath: () => ipcRenderer.invoke('get-app-data-path'),
+  getSavedThemesPath: () => ipcRenderer.invoke('get-saved-themes-path'),
+  listSavedThemes: () => ipcRenderer.invoke('list-saved-themes'),
+  readSavedTheme: (fileName) => ipcRenderer.invoke('read-saved-theme', fileName),
+  writeSavedTheme: (fileName, text) => ipcRenderer.invoke('write-saved-theme', fileName, text),
+  deleteSavedTheme: (fileName) => ipcRenderer.invoke('delete-saved-theme', fileName),
   consumePendingDeepLink: () => ipcRenderer.invoke('consume-pending-deep-link'),
   getDesktopSettings: () => ipcRenderer.invoke('get-desktop-settings'),
   showDesktopNotification: (payload) => ipcRenderer.invoke('show-desktop-notification', payload),
@@ -283,6 +318,19 @@ const electronAPI: ElectronAPI = {
   deleteFile: (filePath) => ipcRenderer.invoke('delete-file', filePath),
   ensureDir: (dirPath) => ipcRenderer.invoke('ensure-dir', dirPath),
 
+  onContextMenu: (listener) => {
+    const wrappedListener = (_event: Electron.IpcRendererEvent, params: ContextMenuParams) => {
+      listener(params);
+    };
+
+    ipcRenderer.on('show-context-menu', wrappedListener);
+
+    return () => {
+      ipcRenderer.removeListener('show-context-menu', wrappedListener);
+    };
+  },
+  copyImageToClipboard: (srcURL) => ipcRenderer.invoke('copy-image-to-clipboard', srcURL),
+
   command: (command) => ipcRenderer.invoke('cqrs:command', command),
   query: (query) => ipcRenderer.invoke('cqrs:query', query)
 };

electron/theme-library.ts

@@ -0,0 +1,91 @@
+import { app } from 'electron';
+import * as fsp from 'fs/promises';
+import * as path from 'path';
+
+export interface SavedThemeFileDescriptor {
+  fileName: string;
+  modifiedAt: number;
+  path: string;
+}
+
+const SAVED_THEME_FILE_NAME_PATTERN = /^[A-Za-z0-9][A-Za-z0-9._-]*\.json$/;
+
+function resolveSavedThemesPath(): string {
+  return path.join(app.getPath('userData'), 'themes');
+}
+
+async function ensureSavedThemesPath(): Promise<string> {
+  const themesPath = resolveSavedThemesPath();
+
+  await fsp.mkdir(themesPath, { recursive: true });
+
+  return themesPath;
+}
+
+function assertSavedThemeFileName(fileName: string): string {
+  const normalized = typeof fileName === 'string'
+    ? fileName.trim()
+    : '';
+
+  if (!SAVED_THEME_FILE_NAME_PATTERN.test(normalized) || normalized.includes('..')) {
+    throw new Error('Invalid saved theme file name.');
+  }
+
+  return normalized;
+}
+
+async function resolveSavedThemeFilePath(fileName: string): Promise<string> {
+  const themesPath = await ensureSavedThemesPath();
+
+  return path.join(themesPath, assertSavedThemeFileName(fileName));
+}
+
+export async function getSavedThemesPath(): Promise<string> {
+  return await ensureSavedThemesPath();
+}
+
+export async function listSavedThemes(): Promise<SavedThemeFileDescriptor[]> {
+  const themesPath = await ensureSavedThemesPath();
+  const entries = await fsp.readdir(themesPath, { withFileTypes: true });
+  const files = entries.filter((entry) => entry.isFile() && entry.name.toLowerCase().endsWith('.json'));
+  const descriptors = await Promise.all(files.map(async (entry) => {
+    const filePath = path.join(themesPath, entry.name);
+    const stats = await fsp.stat(filePath);
+
+    return {
+      fileName: entry.name,
+      modifiedAt: Math.round(stats.mtimeMs),
+      path: filePath
+    } satisfies SavedThemeFileDescriptor;
+  }));
+
+  return descriptors.sort((left, right) => right.modifiedAt - left.modifiedAt || left.fileName.localeCompare(right.fileName));
+}
+
+export async function readSavedTheme(fileName: string): Promise<string> {
+  const filePath = await resolveSavedThemeFilePath(fileName);
+
+  return await fsp.readFile(filePath, 'utf8');
+}
+
+export async function writeSavedTheme(fileName: string, text: string): Promise<boolean> {
+  const filePath = await resolveSavedThemeFilePath(fileName);
+
+  await fsp.writeFile(filePath, text, 'utf8');
+  return true;
+}
+
+export async function deleteSavedTheme(fileName: string): Promise<boolean> {
+  const filePath = await resolveSavedThemeFilePath(fileName);
+
+  try {
+    await fsp.unlink(filePath);
+    return true;
+  } catch (error) {
+    if ((error as { code?: string }).code === 'ENOENT') {
+      return true;
+    }
+
+    throw error;
+  }
+}

electron/window/create-window.ts

@@ -264,6 +264,24 @@ export async function createWindow(): Promise<void> {
 
   emitWindowState();
 
+  mainWindow.webContents.on('context-menu', (_event, params) => {
+    mainWindow?.webContents.send('show-context-menu', {
+      posX: params.x,
+      posY: params.y,
+      isEditable: params.isEditable,
+      selectionText: params.selectionText,
+      linkURL: params.linkURL,
+      mediaType: params.mediaType,
+      srcURL: params.srcURL,
+      editFlags: {
+        canCut: params.editFlags.canCut,
+        canCopy: params.editFlags.canCopy,
+        canPaste: params.editFlags.canPaste,
+        canSelectAll: params.editFlags.canSelectAll
+      }
+    });
+  });
+
   mainWindow.webContents.setWindowOpenHandler(({ url }) => {
     shell.openExternal(url);
     return { action: 'deny' };

package-lock.json

@@ -14,6 +14,12 @@
         "@angular/forms": "^21.0.0",
         "@angular/platform-browser": "^21.0.0",
         "@angular/router": "^21.0.0",
+        "@codemirror/commands": "^6.10.3",
+        "@codemirror/lang-json": "^6.0.2",
+        "@codemirror/language": "^6.12.3",
+        "@codemirror/state": "^6.6.0",
+        "@codemirror/theme-one-dark": "^6.1.3",
+        "@codemirror/view": "^6.41.0",
         "@ng-icons/core": "^33.0.0",
         "@ng-icons/lucide": "^33.0.0",
         "@ngrx/effects": "^21.0.1",
@@ -27,6 +33,7 @@
         "auto-launch": "^5.0.6",
         "class-variance-authority": "^0.7.1",
         "clsx": "^2.1.1",
+        "codemirror": "^6.0.2",
         "cytoscape": "^3.33.1",
         "electron-updater": "^6.6.2",
         "mermaid": "^11.12.3",
@@ -2697,6 +2704,109 @@
       "integrity": "sha512-4mudFAQ6H+MqBTfqLmU7G1ZwRzCLfJEooL/fsF6rCX5eePMbGhoy5n4g+G4vlh2muDcsCTJtL+uKbOzWxs5LHA==",
       "license": "Apache-2.0"
     },
+    "node_modules/@codemirror/autocomplete": {
+      "version": "6.20.1",
+      "resolved": "https://registry.npmjs.org/@codemirror/autocomplete/-/autocomplete-6.20.1.tgz",
+      "integrity": "sha512-1cvg3Vz1dSSToCNlJfRA2WSI4ht3K+WplO0UMOgmUYPivCyy2oueZY6Lx7M9wThm7SDUBViRmuT+OG/i8+ON9A==",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/language": "^6.0.0",
+        "@codemirror/state": "^6.0.0",
+        "@codemirror/view": "^6.17.0",
+        "@lezer/common": "^1.0.0"
+      }
+    },
+    "node_modules/@codemirror/commands": {
+      "version": "6.10.3",
+      "resolved": "https://registry.npmjs.org/@codemirror/commands/-/commands-6.10.3.tgz",
+      "integrity": "sha512-JFRiqhKu+bvSkDLI+rUhJwSxQxYb759W5GBezE8Uc8mHLqC9aV/9aTC7yJSqCtB3F00pylrLCwnyS91Ap5ej4Q==",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/language": "^6.0.0",
+        "@codemirror/state": "^6.6.0",
+        "@codemirror/view": "^6.27.0",
+        "@lezer/common": "^1.1.0"
+      }
+    },
+    "node_modules/@codemirror/lang-json": {
+      "version": "6.0.2",
+      "resolved": "https://registry.npmjs.org/@codemirror/lang-json/-/lang-json-6.0.2.tgz",
+      "integrity": "sha512-x2OtO+AvwEHrEwR0FyyPtfDUiloG3rnVTSZV1W8UteaLL8/MajQd8DpvUb2YVzC+/T18aSDv0H9mu+xw0EStoQ==",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/language": "^6.0.0",
+        "@lezer/json": "^1.0.0"
+      }
+    },
+    "node_modules/@codemirror/language": {
+      "version": "6.12.3",
+      "resolved": "https://registry.npmjs.org/@codemirror/language/-/language-6.12.3.tgz",
+      "integrity": "sha512-QwCZW6Tt1siP37Jet9Tb02Zs81TQt6qQrZR2H+eGMcFsL1zMrk2/b9CLC7/9ieP1fjIUMgviLWMmgiHoJrj+ZA==",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/state": "^6.0.0",
+        "@codemirror/view": "^6.23.0",
+        "@lezer/common": "^1.5.0",
+        "@lezer/highlight": "^1.0.0",
+        "@lezer/lr": "^1.0.0",
+        "style-mod": "^4.0.0"
+      }
+    },
+    "node_modules/@codemirror/lint": {
+      "version": "6.9.5",
+      "resolved": "https://registry.npmjs.org/@codemirror/lint/-/lint-6.9.5.tgz",
+      "integrity": "sha512-GElsbU9G7QT9xXhpUg1zWGmftA/7jamh+7+ydKRuT0ORpWS3wOSP0yT1FOlIZa7mIJjpVPipErsyvVqB9cfTFA==",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/state": "^6.0.0",
+        "@codemirror/view": "^6.35.0",
+        "crelt": "^1.0.5"
+      }
+    },
+    "node_modules/@codemirror/search": {
+      "version": "6.6.0",
+      "resolved": "https://registry.npmjs.org/@codemirror/search/-/search-6.6.0.tgz",
+      "integrity": "sha512-koFuNXcDvyyotWcgOnZGmY7LZqEOXZaaxD/j6n18TCLx2/9HieZJ5H6hs1g8FiRxBD0DNfs0nXn17g872RmYdw==",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/state": "^6.0.0",
+        "@codemirror/view": "^6.37.0",
+        "crelt": "^1.0.5"
+      }
+    },
+    "node_modules/@codemirror/state": {
+      "version": "6.6.0",
+      "resolved": "https://registry.npmjs.org/@codemirror/state/-/state-6.6.0.tgz",
+      "integrity": "sha512-4nbvra5R5EtiCzr9BTHiTLc+MLXK2QGiAVYMyi8PkQd3SR+6ixar/Q/01Fa21TBIDOZXgeWV4WppsQolSreAPQ==",
+      "license": "MIT",
+      "dependencies": {
+        "@marijn/find-cluster-break": "^1.0.0"
+      }
+    },
+    "node_modules/@codemirror/theme-one-dark": {
+      "version": "6.1.3",
+      "resolved": "https://registry.npmjs.org/@codemirror/theme-one-dark/-/theme-one-dark-6.1.3.tgz",
+      "integrity": "sha512-NzBdIvEJmx6fjeremiGp3t/okrLPYT0d9orIc7AFun8oZcRk58aejkqhv6spnz4MLAevrKNPMQYXEWMg4s+sKA==",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/language": "^6.0.0",
+        "@codemirror/state": "^6.0.0",
+        "@codemirror/view": "^6.0.0",
+        "@lezer/highlight": "^1.0.0"
+      }
+    },
+    "node_modules/@codemirror/view": {
+      "version": "6.41.0",
+      "resolved": "https://registry.npmjs.org/@codemirror/view/-/view-6.41.0.tgz",
+      "integrity": "sha512-6H/qadXsVuDY219Yljhohglve8xf4B8xJkVOEWfA5uiYKiTFppjqsvsfR5iPA0RbvRBoOyTZpbLIxe9+0UR8xA==",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/state": "^6.6.0",
+        "crelt": "^1.0.6",
+        "style-mod": "^4.1.0",
+        "w3c-keyname": "^2.2.4"
+      }
+    },
     "node_modules/@develar/schema-utils": {
       "version": "2.6.5",
       "resolved": "https://registry.npmjs.org/@develar/schema-utils/-/schema-utils-2.6.5.tgz",
@@ -5672,6 +5782,41 @@
       "integrity": "sha512-Vo+PSpZG2/fmgmiNzYK9qWRh8h/CHrwD0mo1h1DzL4yzHNSfWYujGTYsWGreD000gcgmZ7K4Ys6Tx9TxtsKdDw==",
       "license": "MIT"
     },
+    "node_modules/@lezer/common": {
+      "version": "1.5.1",
+      "resolved": "https://registry.npmjs.org/@lezer/common/-/common-1.5.1.tgz",
+      "integrity": "sha512-6YRVG9vBkaY7p1IVxL4s44n5nUnaNnGM2/AckNgYOnxTG2kWh1vR8BMxPseWPjRNpb5VtXnMpeYAEAADoRV1Iw==",
+      "license": "MIT"
+    },
+    "node_modules/@lezer/highlight": {
+      "version": "1.2.3",
+      "resolved": "https://registry.npmjs.org/@lezer/highlight/-/highlight-1.2.3.tgz",
+      "integrity": "sha512-qXdH7UqTvGfdVBINrgKhDsVTJTxactNNxLk7+UMwZhU13lMHaOBlJe9Vqp907ya56Y3+ed2tlqzys7jDkTmW0g==",
+      "license": "MIT",
+      "dependencies": {
+        "@lezer/common": "^1.3.0"
+      }
+    },
+    "node_modules/@lezer/json": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/@lezer/json/-/json-1.0.3.tgz",
+      "integrity": "sha512-BP9KzdF9Y35PDpv04r0VeSTKDeox5vVr3efE7eBbx3r4s3oNLfunchejZhjArmeieBH+nVOpgIiBJpEAv8ilqQ==",
+      "license": "MIT",
+      "dependencies": {
+        "@lezer/common": "^1.2.0",
+        "@lezer/highlight": "^1.0.0",
+        "@lezer/lr": "^1.0.0"
+      }
+    },
+    "node_modules/@lezer/lr": {
+      "version": "1.4.8",
+      "resolved": "https://registry.npmjs.org/@lezer/lr/-/lr-1.4.8.tgz",
+      "integrity": "sha512-bPWa0Pgx69ylNlMlPvBPryqeLYQjyJjqPx+Aupm5zydLIF3NE+6MMLT8Yi23Bd9cif9VS00aUebn+6fDIGBcDA==",
+      "license": "MIT",
+      "dependencies": {
+        "@lezer/common": "^1.0.0"
+      }
+    },
     "node_modules/@listr2/prompt-adapter-inquirer": {
       "version": "3.0.5",
       "resolved": "https://registry.npmjs.org/@listr2/prompt-adapter-inquirer/-/prompt-adapter-inquirer-3.0.5.tgz",
@@ -5865,6 +6010,12 @@
         "node": ">= 10.0.0"
       }
     },
+    "node_modules/@marijn/find-cluster-break": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/@marijn/find-cluster-break/-/find-cluster-break-1.0.2.tgz",
+      "integrity": "sha512-l0h88YhZFyKdXIFNfSWpyjStDjGHwZ/U7iobcK1cQQD8sejsONdQtTVU+1wVN1PBw40PiiHB1vA5S7VTfQiP9g==",
+      "license": "MIT"
+    },
     "node_modules/@mermaid-js/parser": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/@mermaid-js/parser/-/parser-1.0.0.tgz",
@@ -14138,6 +14289,21 @@
       "integrity": "sha512-Oofo0pq3IKnsFtuHqSF7TqBfr71aeyZDVJ0HpmqB7FBM2qEigL0iPONSCZSO9pE9dZTAxANe5XHG9Uy0YMv8cg==",
       "license": "MIT"
     },
+    "node_modules/codemirror": {
+      "version": "6.0.2",
+      "resolved": "https://registry.npmjs.org/codemirror/-/codemirror-6.0.2.tgz",
+      "integrity": "sha512-VhydHotNW5w1UGK0Qj96BwSk/Zqbp9WbnyK2W/eVMv4QyF41INRGpjUhFJY7/uDNuudSc33a/PKr4iDqRduvHw==",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/autocomplete": "^6.0.0",
+        "@codemirror/commands": "^6.0.0",
+        "@codemirror/language": "^6.0.0",
+        "@codemirror/lint": "^6.0.0",
+        "@codemirror/search": "^6.0.0",
+        "@codemirror/state": "^6.0.0",
+        "@codemirror/view": "^6.0.0"
+      }
+    },
     "node_modules/color-convert": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-2.0.1.tgz",
@@ -14766,6 +14932,12 @@
         "ieee754": "^1.1.13"
       }
     },
+    "node_modules/crelt": {
+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/crelt/-/crelt-1.0.6.tgz",
+      "integrity": "sha512-VQ2MBenTq1fWZUH9DJNGti7kKv6EeAuYr3cLwxUWhIu1baTaXh4Ib5W2CqHVqib4/MqbYGJqiL3Zb8GJZr3l4g==",
+      "license": "MIT"
+    },
     "node_modules/cron-parser": {
       "version": "4.9.0",
       "resolved": "https://registry.npmjs.org/cron-parser/-/cron-parser-4.9.0.tgz",
@@ -27782,6 +27954,12 @@
         "webpack": "^5.0.0"
       }
     },
+    "node_modules/style-mod": {
+      "version": "4.1.3",
+      "resolved": "https://registry.npmjs.org/style-mod/-/style-mod-4.1.3.tgz",
+      "integrity": "sha512-i/n8VsZydrugj3Iuzll8+x/00GH2vnYsk1eomD8QiRrSAeW6ItbCQDtfXCeJHd0iwiNagqjQkvpvREEPtW3IoQ==",
+      "license": "MIT"
+    },
     "node_modules/stylehacks": {
       "version": "6.1.1",
       "resolved": "https://registry.npmjs.org/stylehacks/-/stylehacks-6.1.1.tgz",
@@ -30374,6 +30552,12 @@
       "integrity": "sha512-/BpdSx+yCQGnCvecbyXdxHDkuk55/G3xwnC0GqY4gmQ3j+A+g8kzzgB4Nk/SINjqn6+waqw3EgbVF2QKExkRxQ==",
       "license": "MIT"
     },
+    "node_modules/w3c-keyname": {
+      "version": "2.2.8",
+      "resolved": "https://registry.npmjs.org/w3c-keyname/-/w3c-keyname-2.2.8.tgz",
+      "integrity": "sha512-dpojBhNsCNN7T82Tm7k26A6G9ML3NkhDsnw9n/eoxSRlVBB4CEtIQ/KTCLI2Fwf3ataSXRhYFkQi3SlnFwPvPQ==",
+      "license": "MIT"
+    },
     "node_modules/wait-on": {
       "version": "7.2.0",
       "resolved": "https://registry.npmjs.org/wait-on/-/wait-on-7.2.0.tgz",

package.json

@@ -60,6 +60,12 @@
     "@angular/forms": "^21.0.0",
     "@angular/platform-browser": "^21.0.0",
     "@angular/router": "^21.0.0",
+    "@codemirror/commands": "^6.10.3",
+    "@codemirror/lang-json": "^6.0.2",
+    "@codemirror/language": "^6.12.3",
+    "@codemirror/state": "^6.6.0",
+    "@codemirror/theme-one-dark": "^6.1.3",
+    "@codemirror/view": "^6.41.0",
     "@ng-icons/core": "^33.0.0",
     "@ng-icons/lucide": "^33.0.0",
     "@ngrx/effects": "^21.0.1",
@@ -73,6 +79,7 @@
     "auto-launch": "^5.0.6",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
+    "codemirror": "^6.0.2",
     "cytoscape": "^3.33.1",
     "electron-updater": "^6.6.2",
     "mermaid": "^11.12.3",

server/src/config/variables.ts

@@ -4,18 +4,28 @@ import { resolveRuntimePath } from '../runtime-paths';
 
 export type ServerHttpProtocol = 'http' | 'https';
 
+export interface LinkPreviewConfig {
+  enabled: boolean;
+  cacheTtlMinutes: number;
+  maxCacheSizeMb: number;
+}
+
 export interface ServerVariablesConfig {
   klipyApiKey: string;
   releaseManifestUrl: string;
   serverPort: number;
   serverProtocol: ServerHttpProtocol;
   serverHost: string;
+  linkPreview: LinkPreviewConfig;
 }
 
 const DATA_DIR = resolveRuntimePath('data');
 const VARIABLES_FILE = path.join(DATA_DIR, 'variables.json');
 const DEFAULT_SERVER_PORT = 3001;
 const DEFAULT_SERVER_PROTOCOL: ServerHttpProtocol = 'http';
+const DEFAULT_LINK_PREVIEW_CACHE_TTL_MINUTES = 7200;
+const DEFAULT_LINK_PREVIEW_MAX_CACHE_SIZE_MB = 50;
+const HARD_MAX_CACHE_SIZE_MB = 50;
 
 function normalizeKlipyApiKey(value: unknown): string {
   return typeof value === 'string' ? value.trim() : '';
@@ -66,6 +76,27 @@ function normalizeServerPort(value: unknown, fallback = DEFAULT_SERVER_PORT): nu
     : fallback;
 }
 
+function normalizeLinkPreviewConfig(value: unknown): LinkPreviewConfig {
+  const raw = (value && typeof value === 'object' && !Array.isArray(value))
+    ? value as Record<string, unknown>
+    : {};
+  const enabled = typeof raw.enabled === 'boolean'
+    ? raw.enabled
+    : true;
+  const cacheTtl = typeof raw.cacheTtlMinutes === 'number'
+    && Number.isFinite(raw.cacheTtlMinutes)
+    && raw.cacheTtlMinutes >= 0
+    ? raw.cacheTtlMinutes
+    : DEFAULT_LINK_PREVIEW_CACHE_TTL_MINUTES;
+  const maxSize = typeof raw.maxCacheSizeMb === 'number'
+    && Number.isFinite(raw.maxCacheSizeMb)
+    && raw.maxCacheSizeMb >= 0
+    ? Math.min(raw.maxCacheSizeMb, HARD_MAX_CACHE_SIZE_MB)
+    : DEFAULT_LINK_PREVIEW_MAX_CACHE_SIZE_MB;
+
+  return { enabled, cacheTtlMinutes: cacheTtl, maxCacheSizeMb: maxSize };
+}
+
 function hasEnvironmentOverride(value: string | undefined): value is string {
   return typeof value === 'string' && value.trim().length > 0;
 }
@@ -111,7 +142,8 @@ export function ensureVariablesConfig(): ServerVariablesConfig {
     releaseManifestUrl: normalizeReleaseManifestUrl(remainingParsed.releaseManifestUrl),
     serverPort: normalizeServerPort(remainingParsed.serverPort),
     serverProtocol: normalizeServerProtocol(remainingParsed.serverProtocol),
-    serverHost: normalizeServerHost(remainingParsed.serverHost ?? legacyServerIpAddress)
+    serverHost: normalizeServerHost(remainingParsed.serverHost ?? legacyServerIpAddress),
+    linkPreview: normalizeLinkPreviewConfig(remainingParsed.linkPreview)
   };
   const nextContents = JSON.stringify(normalized, null, 2) + '\n';
 
@@ -124,7 +156,8 @@ export function ensureVariablesConfig(): ServerVariablesConfig {
     releaseManifestUrl: normalized.releaseManifestUrl,
     serverPort: normalized.serverPort,
     serverProtocol: normalized.serverProtocol,
-    serverHost: normalized.serverHost
+    serverHost: normalized.serverHost,
+    linkPreview: normalized.linkPreview
   };
 }
 
@@ -169,3 +202,7 @@ export function getServerHost(): string | undefined {
 export function isHttpsServerEnabled(): boolean {
   return getServerProtocol() === 'https';
 }
+
+export function getLinkPreviewConfig(): LinkPreviewConfig {
+  return getVariablesConfig().linkPreview;
+}

server/src/cqrs/commands/handlers/deleteServer.ts

@@ -1,6 +1,11 @@
 import { DataSource } from 'typeorm';
 import {
+  ServerChannelPermissionEntity,
+  ServerChannelEntity,
   ServerEntity,
+  ServerRoleEntity,
+  ServerTagEntity,
+  ServerUserRoleEntity,
   JoinRequestEntity,
   ServerMembershipEntity,
   ServerInviteEntity,
@@ -11,9 +16,16 @@ import { DeleteServerCommand } from '../../types';
 export async function handleDeleteServer(command: DeleteServerCommand, dataSource: DataSource): Promise<void> {
   const { serverId } = command.payload;
 
-  await dataSource.getRepository(JoinRequestEntity).delete({ serverId });
-  await dataSource.getRepository(ServerMembershipEntity).delete({ serverId });
-  await dataSource.getRepository(ServerInviteEntity).delete({ serverId });
-  await dataSource.getRepository(ServerBanEntity).delete({ serverId });
-  await dataSource.getRepository(ServerEntity).delete(serverId);
+  await dataSource.transaction(async (manager) => {
+    await manager.getRepository(ServerTagEntity).delete({ serverId });
+    await manager.getRepository(ServerChannelEntity).delete({ serverId });
+    await manager.getRepository(ServerRoleEntity).delete({ serverId });
+    await manager.getRepository(ServerUserRoleEntity).delete({ serverId });
+    await manager.getRepository(ServerChannelPermissionEntity).delete({ serverId });
+    await manager.getRepository(JoinRequestEntity).delete({ serverId });
+    await manager.getRepository(ServerMembershipEntity).delete({ serverId });
+    await manager.getRepository(ServerInviteEntity).delete({ serverId });
+    await manager.getRepository(ServerBanEntity).delete({ serverId });
+    await manager.getRepository(ServerEntity).delete(serverId);
+  });
 }

server/src/cqrs/commands/handlers/upsertServer.ts

@@ -1,25 +1,35 @@
 import { DataSource } from 'typeorm';
 import { ServerEntity } from '../../../entities';
+import { replaceServerRelations } from '../../relations';
 import { UpsertServerCommand } from '../../types';
 
 export async function handleUpsertServer(command: UpsertServerCommand, dataSource: DataSource): Promise<void> {
-  const repo = dataSource.getRepository(ServerEntity);
   const { server } = command.payload;
-  const entity = repo.create({
-    id: server.id,
-    name: server.name,
-    description: server.description ?? null,
-    ownerId: server.ownerId,
-    ownerPublicKey: server.ownerPublicKey,
-    passwordHash: server.passwordHash ?? null,
-    isPrivate: server.isPrivate ? 1 : 0,
-    maxUsers: server.maxUsers,
-    currentUsers: server.currentUsers,
-    tags: JSON.stringify(server.tags),
-    channels: JSON.stringify(server.channels ?? []),
-    createdAt: server.createdAt,
-    lastSeen: server.lastSeen
-  });
 
-  await repo.save(entity);
+  await dataSource.transaction(async (manager) => {
+    const repo = manager.getRepository(ServerEntity);
+    const entity = repo.create({
+      id: server.id,
+      name: server.name,
+      description: server.description ?? null,
+      ownerId: server.ownerId,
+      ownerPublicKey: server.ownerPublicKey,
+      passwordHash: server.passwordHash ?? null,
+      isPrivate: server.isPrivate ? 1 : 0,
+      maxUsers: server.maxUsers,
+      currentUsers: server.currentUsers,
+      slowModeInterval: server.slowModeInterval ?? 0,
+      createdAt: server.createdAt,
+      lastSeen: server.lastSeen
+    });
+
+    await repo.save(entity);
+    await replaceServerRelations(manager, server.id, {
+      tags: server.tags,
+      channels: server.channels ?? [],
+      roles: server.roles ?? [],
+      roleAssignments: server.roleAssignments ?? [],
+      channelPermissions: server.channelPermissions ?? []
+    });
+  });
 }

server/src/cqrs/mappers.ts

@@ -3,66 +3,10 @@ import { ServerEntity } from '../entities/ServerEntity';
 import { JoinRequestEntity } from '../entities/JoinRequestEntity';
 import {
   AuthUserPayload,
-  ServerChannelPayload,
   ServerPayload,
   JoinRequestPayload
 } from './types';
-
-function channelNameKey(type: ServerChannelPayload['type'], name: string): string {
-  return `${type}:${name.toLocaleLowerCase()}`;
-}
-
-function parseStringArray(raw: string | null | undefined): string[] {
-  try {
-    const parsed = JSON.parse(raw || '[]');
-
-    return Array.isArray(parsed)
-      ? parsed.filter((value): value is string => typeof value === 'string')
-      : [];
-  } catch {
-    return [];
-  }
-}
-
-function parseServerChannels(raw: string | null | undefined): ServerChannelPayload[] {
-  try {
-    const parsed = JSON.parse(raw || '[]');
-
-    if (!Array.isArray(parsed)) {
-      return [];
-    }
-
-    const seenIds = new Set<string>();
-    const seenNames = new Set<string>();
-
-    return parsed
-      .filter((channel): channel is Record<string, unknown> => !!channel && typeof channel === 'object')
-      .map((channel, index) => {
-        const id = typeof channel.id === 'string' ? channel.id.trim() : '';
-        const name = typeof channel.name === 'string' ? channel.name.trim().replace(/\s+/g, ' ') : '';
-        const type = channel.type === 'text' || channel.type === 'voice' ? channel.type : null;
-        const position = typeof channel.position === 'number' ? channel.position : index;
-        const nameKey = type ? channelNameKey(type, name) : '';
-
-        if (!id || !name || !type || seenIds.has(id) || seenNames.has(nameKey)) {
-          return null;
-        }
-
-        seenIds.add(id);
-        seenNames.add(nameKey);
-
-        return {
-          id,
-          name,
-          type,
-          position
-        } satisfies ServerChannelPayload;
-      })
-      .filter((channel): channel is ServerChannelPayload => !!channel);
-  } catch {
-    return [];
-  }
-}
+import { relationRecordToServerPayload } from './relations';
 
 export function rowToAuthUser(row: AuthUserEntity): AuthUserPayload {
   return {
@@ -74,7 +18,24 @@ export function rowToAuthUser(row: AuthUserEntity): AuthUserPayload {
   };
 }
 
-export function rowToServer(row: ServerEntity): ServerPayload {
+export function rowToServer(
+  row: ServerEntity,
+  relations: Pick<ServerPayload, 'tags' | 'channels' | 'roles' | 'roleAssignments' | 'channelPermissions'> = {
+    tags: [],
+    channels: [],
+    roles: [],
+    roleAssignments: [],
+    channelPermissions: []
+  }
+): ServerPayload {
+  const relationPayload = relationRecordToServerPayload({ slowModeInterval: row.slowModeInterval }, {
+    tags: relations.tags ?? [],
+    channels: relations.channels ?? [],
+    roles: relations.roles ?? [],
+    roleAssignments: relations.roleAssignments ?? [],
+    channelPermissions: relations.channelPermissions ?? []
+  });
+
   return {
     id: row.id,
     name: row.name,
@@ -86,8 +47,12 @@ export function rowToServer(row: ServerEntity): ServerPayload {
     isPrivate: !!row.isPrivate,
     maxUsers: row.maxUsers,
     currentUsers: row.currentUsers,
-    tags: parseStringArray(row.tags),
-    channels: parseServerChannels(row.channels),
+    slowModeInterval: relationPayload.slowModeInterval,
+    tags: relationPayload.tags,
+    channels: relationPayload.channels,
+    roles: relationPayload.roles,
+    roleAssignments: relationPayload.roleAssignments,
+    channelPermissions: relationPayload.channelPermissions,
     createdAt: row.createdAt,
     lastSeen: row.lastSeen
   };

server/src/cqrs/queries/handlers/getAllPublicServers.ts

@@ -1,10 +1,12 @@
 import { DataSource } from 'typeorm';
 import { ServerEntity } from '../../../entities';
 import { rowToServer } from '../../mappers';
+import { loadServerRelationsMap } from '../../relations';
 
 export async function handleGetAllPublicServers(dataSource: DataSource) {
   const repo = dataSource.getRepository(ServerEntity);
   const rows = await repo.find({ where: { isPrivate: 0 } });
+  const relationsByServerId = await loadServerRelationsMap(dataSource, rows.map((row) => row.id));
 
-  return rows.map(rowToServer);
+  return rows.map((row) => rowToServer(row, relationsByServerId.get(row.id)));
 }

server/src/cqrs/queries/handlers/getServerById.ts

@@ -2,10 +2,17 @@ import { DataSource } from 'typeorm';
 import { ServerEntity } from '../../../entities';
 import { GetServerByIdQuery } from '../../types';
 import { rowToServer } from '../../mappers';
+import { loadServerRelationsMap } from '../../relations';
 
 export async function handleGetServerById(query: GetServerByIdQuery, dataSource: DataSource) {
   const repo = dataSource.getRepository(ServerEntity);
   const row = await repo.findOne({ where: { id: query.payload.serverId } });
 
-  return row ? rowToServer(row) : null;
+  if (!row) {
+    return null;
+  }
+
+  const relationsByServerId = await loadServerRelationsMap(dataSource, [row.id]);
+
+  return rowToServer(row, relationsByServerId.get(row.id));
 }

server/src/cqrs/relations.ts

@@ -0,0 +1,603 @@
+import {
+  DataSource,
+  EntityManager,
+  In
+} from 'typeorm';
+import {
+  ServerChannelEntity,
+  ServerTagEntity,
+  ServerRoleEntity,
+  ServerUserRoleEntity,
+  ServerChannelPermissionEntity
+} from '../entities';
+import {
+  AccessRolePayload,
+  ChannelPermissionPayload,
+  RoleAssignmentPayload,
+  ServerChannelPayload,
+  ServerPayload,
+  ServerPermissionKeyPayload,
+  PermissionStatePayload
+} from './types';
+
+const SERVER_PERMISSION_KEYS: ServerPermissionKeyPayload[] = [
+  'manageServer',
+  'manageRoles',
+  'manageChannels',
+  'manageIcon',
+  'kickMembers',
+  'banMembers',
+  'manageBans',
+  'deleteMessages',
+  'joinVoice',
+  'shareScreen',
+  'uploadFiles'
+];
+const SYSTEM_ROLE_IDS = {
+  everyone: 'system-everyone',
+  moderator: 'system-moderator',
+  admin: 'system-admin'
+} as const;
+
+interface ServerRelationRecord {
+  tags: string[];
+  channels: ServerChannelPayload[];
+  roles: AccessRolePayload[];
+  roleAssignments: RoleAssignmentPayload[];
+  channelPermissions: ChannelPermissionPayload[];
+}
+
+function normalizeChannelName(name: string): string {
+  return name.trim().replace(/\s+/g, ' ');
+}
+
+function channelNameKey(type: ServerChannelPayload['type'], name: string): string {
+  return `${type}:${normalizeChannelName(name).toLocaleLowerCase()}`;
+}
+
+function compareText(firstValue: string, secondValue: string): number {
+  return firstValue.localeCompare(secondValue, undefined, { sensitivity: 'base' });
+}
+
+function isFiniteNumber(value: unknown): value is number {
+  return typeof value === 'number' && Number.isFinite(value);
+}
+
+function uniqueStrings(values: readonly string[] | undefined): string[] {
+  return Array.from(new Set((values ?? [])
+    .filter((value): value is string => typeof value === 'string' && value.trim().length > 0)
+    .map((value) => value.trim())));
+}
+
+function normalizePermissionState(value: unknown): PermissionStatePayload {
+  return value === 'allow' || value === 'deny' || value === 'inherit'
+    ? value
+    : 'inherit';
+}
+
+function normalizePermissionMatrix(rawMatrix: unknown): Partial<Record<ServerPermissionKeyPayload, PermissionStatePayload>> {
+  const matrix = rawMatrix && typeof rawMatrix === 'object'
+    ? rawMatrix as Record<string, unknown>
+    : {};
+  const normalized: Partial<Record<ServerPermissionKeyPayload, PermissionStatePayload>> = {};
+
+  for (const key of SERVER_PERMISSION_KEYS) {
+    const value = normalizePermissionState(matrix[key]);
+
+    if (value !== 'inherit') {
+      normalized[key] = value;
+    }
+  }
+
+  return normalized;
+}
+
+function buildDefaultServerRoles(): AccessRolePayload[] {
+  return [
+    {
+      id: SYSTEM_ROLE_IDS.everyone,
+      name: '@everyone',
+      color: '#6b7280',
+      position: 0,
+      isSystem: true,
+      permissions: {
+        joinVoice: 'allow',
+        shareScreen: 'allow',
+        uploadFiles: 'allow'
+      }
+    },
+    {
+      id: SYSTEM_ROLE_IDS.moderator,
+      name: 'Moderator',
+      color: '#10b981',
+      position: 200,
+      isSystem: true,
+      permissions: {
+        kickMembers: 'allow',
+        deleteMessages: 'allow'
+      }
+    },
+    {
+      id: SYSTEM_ROLE_IDS.admin,
+      name: 'Admin',
+      color: '#60a5fa',
+      position: 300,
+      isSystem: true,
+      permissions: {
+        kickMembers: 'allow',
+        banMembers: 'allow',
+        manageBans: 'allow',
+        deleteMessages: 'allow',
+        manageChannels: 'allow',
+        manageIcon: 'allow'
+      }
+    }
+  ];
+}
+
+function normalizeServerRole(rawRole: Partial<AccessRolePayload>, fallbackRole?: AccessRolePayload): AccessRolePayload | null {
+  const id = typeof rawRole.id === 'string' ? rawRole.id.trim() : fallbackRole?.id ?? '';
+  const name = typeof rawRole.name === 'string' ? rawRole.name.trim().replace(/\s+/g, ' ') : fallbackRole?.name ?? '';
+
+  if (!id || !name) {
+    return null;
+  }
+
+  return {
+    id,
+    name,
+    color: typeof rawRole.color === 'string' && rawRole.color.trim() ? rawRole.color.trim() : fallbackRole?.color,
+    position: isFiniteNumber(rawRole.position) ? rawRole.position : fallbackRole?.position ?? 0,
+    isSystem: typeof rawRole.isSystem === 'boolean' ? rawRole.isSystem : fallbackRole?.isSystem,
+    permissions: normalizePermissionMatrix(rawRole.permissions ?? fallbackRole?.permissions)
+  };
+}
+
+function compareRoles(firstRole: AccessRolePayload, secondRole: AccessRolePayload): number {
+  if (firstRole.position !== secondRole.position) {
+    return firstRole.position - secondRole.position;
+  }
+
+  return compareText(firstRole.name, secondRole.name);
+}
+
+function compareAssignments(firstAssignment: RoleAssignmentPayload, secondAssignment: RoleAssignmentPayload): number {
+  return compareText(firstAssignment.oderId || firstAssignment.userId, secondAssignment.oderId || secondAssignment.userId);
+}
+
+export function normalizeServerTags(rawTags: unknown): string[] {
+  if (!Array.isArray(rawTags)) {
+    return [];
+  }
+
+  return rawTags
+    .filter((tag): tag is string => typeof tag === 'string')
+    .map((tag) => tag.trim())
+    .filter(Boolean);
+}
+
+export function normalizeServerChannels(rawChannels: unknown): ServerChannelPayload[] {
+  if (!Array.isArray(rawChannels)) {
+    return [];
+  }
+
+  const seenIds = new Set<string>();
+  const seenNames = new Set<string>();
+  const channels: ServerChannelPayload[] = [];
+
+  for (const [index, rawChannel] of rawChannels.entries()) {
+    if (!rawChannel || typeof rawChannel !== 'object') {
+      continue;
+    }
+
+    const channel = rawChannel as Record<string, unknown>;
+    const id = typeof channel['id'] === 'string' ? channel['id'].trim() : '';
+    const name = typeof channel['name'] === 'string' ? normalizeChannelName(channel['name']) : '';
+    const type = channel['type'] === 'text' || channel['type'] === 'voice' ? channel['type'] : null;
+    const position = isFiniteNumber(channel['position']) ? channel['position'] : index;
+    const nameKey = type ? channelNameKey(type, name) : '';
+
+    if (!id || !name || !type || seenIds.has(id) || seenNames.has(nameKey)) {
+      continue;
+    }
+
+    seenIds.add(id);
+    seenNames.add(nameKey);
+    channels.push({
+      id,
+      name,
+      type,
+      position
+    });
+  }
+
+  return channels;
+}
+
+export function normalizeServerRoles(rawRoles: unknown): AccessRolePayload[] {
+  const rolesById = new Map<string, AccessRolePayload>();
+
+  if (Array.isArray(rawRoles)) {
+    for (const rawRole of rawRoles) {
+      if (!rawRole || typeof rawRole !== 'object') {
+        continue;
+      }
+
+      const normalizedRole = normalizeServerRole(rawRole as Record<string, unknown>);
+
+      if (normalizedRole) {
+        rolesById.set(normalizedRole.id, normalizedRole);
+      }
+    }
+  }
+
+  for (const defaultRole of buildDefaultServerRoles()) {
+    const mergedRole = normalizeServerRole(rolesById.get(defaultRole.id) ?? defaultRole, defaultRole) ?? defaultRole;
+
+    rolesById.set(defaultRole.id, mergedRole);
+  }
+
+  return Array.from(rolesById.values()).sort(compareRoles);
+}
+
+export function normalizeServerRoleAssignments(rawAssignments: unknown, roles: readonly AccessRolePayload[]): RoleAssignmentPayload[] {
+  const validRoleIds = new Set(roles.map((role) => role.id).filter((roleId) => roleId !== SYSTEM_ROLE_IDS.everyone));
+  const assignmentsByKey = new Map<string, RoleAssignmentPayload>();
+
+  if (!Array.isArray(rawAssignments)) {
+    return [];
+  }
+
+  for (const rawAssignment of rawAssignments) {
+    if (!rawAssignment || typeof rawAssignment !== 'object') {
+      continue;
+    }
+
+    const assignment = rawAssignment as Record<string, unknown>;
+    const userId = typeof assignment['userId'] === 'string' ? assignment['userId'].trim() : '';
+    const oderId = typeof assignment['oderId'] === 'string' ? assignment['oderId'].trim() : undefined;
+    const key = oderId || userId;
+
+    if (!key) {
+      continue;
+    }
+
+    const roleIds = uniqueStrings(Array.isArray(assignment['roleIds']) ? assignment['roleIds'] as string[] : undefined)
+      .filter((roleId) => validRoleIds.has(roleId));
+
+    if (roleIds.length === 0) {
+      continue;
+    }
+
+    assignmentsByKey.set(key, {
+      userId: userId || key,
+      oderId,
+      roleIds
+    });
+  }
+
+  return Array.from(assignmentsByKey.values()).sort(compareAssignments);
+}
+
+export function normalizeServerChannelPermissions(
+  rawChannelPermissions: unknown,
+  roles: readonly AccessRolePayload[]
+): ChannelPermissionPayload[] {
+  if (!Array.isArray(rawChannelPermissions)) {
+    return [];
+  }
+
+  const validRoleIds = new Set(roles.map((role) => role.id));
+  const overridesByKey = new Map<string, ChannelPermissionPayload>();
+
+  for (const rawOverride of rawChannelPermissions) {
+    if (!rawOverride || typeof rawOverride !== 'object') {
+      continue;
+    }
+
+    const override = rawOverride as Record<string, unknown>;
+    const channelId = typeof override['channelId'] === 'string' ? override['channelId'].trim() : '';
+    const targetType = override['targetType'] === 'role' || override['targetType'] === 'user' ? override['targetType'] : null;
+    const targetId = typeof override['targetId'] === 'string' ? override['targetId'].trim() : '';
+    const permission = SERVER_PERMISSION_KEYS.find((key) => key === override['permission']);
+    const value = normalizePermissionState(override['value']);
+
+    if (!channelId || !targetType || !targetId || !permission || value === 'inherit') {
+      continue;
+    }
+
+    if (targetType === 'role' && !validRoleIds.has(targetId)) {
+      continue;
+    }
+
+    const key = `${channelId}:${targetType}:${targetId}:${permission}`;
+
+    overridesByKey.set(key, {
+      channelId,
+      targetType,
+      targetId,
+      permission,
+      value
+    });
+  }
+
+  return Array.from(overridesByKey.values()).sort((firstOverride, secondOverride) => {
+    const channelCompare = compareText(firstOverride.channelId, secondOverride.channelId);
+
+    if (channelCompare !== 0) {
+      return channelCompare;
+    }
+
+    if (firstOverride.targetType !== secondOverride.targetType) {
+      return compareText(firstOverride.targetType, secondOverride.targetType);
+    }
+
+    const targetCompare = compareText(firstOverride.targetId, secondOverride.targetId);
+
+    if (targetCompare !== 0) {
+      return targetCompare;
+    }
+
+    return compareText(firstOverride.permission, secondOverride.permission);
+  });
+}
+
+export async function replaceServerRelations(
+  manager: EntityManager,
+  serverId: string,
+  options: {
+    tags: unknown;
+    channels: unknown;
+    roles?: unknown;
+    roleAssignments?: unknown;
+    channelPermissions?: unknown;
+  }
+): Promise<void> {
+  const tagRepo = manager.getRepository(ServerTagEntity);
+  const channelRepo = manager.getRepository(ServerChannelEntity);
+  const roleRepo = manager.getRepository(ServerRoleEntity);
+  const userRoleRepo = manager.getRepository(ServerUserRoleEntity);
+  const channelPermissionRepo = manager.getRepository(ServerChannelPermissionEntity);
+  const tags = normalizeServerTags(options.tags);
+  const channels = normalizeServerChannels(options.channels);
+  const roles = options.roles !== undefined ? normalizeServerRoles(options.roles) : [];
+
+  await tagRepo.delete({ serverId });
+  await channelRepo.delete({ serverId });
+
+  if (options.roles !== undefined) {
+    await roleRepo.delete({ serverId });
+  }
+
+  if (options.roleAssignments !== undefined) {
+    await userRoleRepo.delete({ serverId });
+  }
+
+  if (options.channelPermissions !== undefined) {
+    await channelPermissionRepo.delete({ serverId });
+  }
+
+  if (tags.length > 0) {
+    await tagRepo.insert(
+      tags.map((tag, position) => ({
+        serverId,
+        position,
+        value: tag
+      }))
+    );
+  }
+
+  if (channels.length > 0) {
+    await channelRepo.insert(
+      channels.map((channel) => ({
+        serverId,
+        channelId: channel.id,
+        name: channel.name,
+        type: channel.type,
+        position: channel.position
+      }))
+    );
+  }
+
+  if (options.roles !== undefined && roles.length > 0) {
+    await roleRepo.insert(
+      roles.map((role) => ({
+        serverId,
+        roleId: role.id,
+        name: role.name,
+        color: role.color ?? null,
+        position: role.position,
+        isSystem: role.isSystem ? 1 : 0,
+        manageServer: normalizePermissionState(role.permissions?.manageServer),
+        manageRoles: normalizePermissionState(role.permissions?.manageRoles),
+        manageChannels: normalizePermissionState(role.permissions?.manageChannels),
+        manageIcon: normalizePermissionState(role.permissions?.manageIcon),
+        kickMembers: normalizePermissionState(role.permissions?.kickMembers),
+        banMembers: normalizePermissionState(role.permissions?.banMembers),
+        manageBans: normalizePermissionState(role.permissions?.manageBans),
+        deleteMessages: normalizePermissionState(role.permissions?.deleteMessages),
+        joinVoice: normalizePermissionState(role.permissions?.joinVoice),
+        shareScreen: normalizePermissionState(role.permissions?.shareScreen),
+        uploadFiles: normalizePermissionState(role.permissions?.uploadFiles)
+      }))
+    );
+  }
+
+  if (options.roleAssignments !== undefined) {
+    const roleAssignments = normalizeServerRoleAssignments(options.roleAssignments, roles.length > 0 ? roles : normalizeServerRoles([]));
+    const rows = roleAssignments.flatMap((assignment) =>
+      assignment.roleIds.map((roleId) => ({
+        serverId,
+        userId: assignment.userId,
+        roleId,
+        oderId: assignment.oderId ?? null
+      }))
+    );
+
+    if (rows.length > 0) {
+      await userRoleRepo.insert(rows);
+    }
+  }
+
+  if (options.channelPermissions !== undefined) {
+    const channelPermissions = normalizeServerChannelPermissions(
+      options.channelPermissions,
+      roles.length > 0 ? roles : normalizeServerRoles([])
+    );
+
+    if (channelPermissions.length > 0) {
+      await channelPermissionRepo.insert(
+        channelPermissions.map((channelPermission) => ({
+          serverId,
+          channelId: channelPermission.channelId,
+          targetType: channelPermission.targetType,
+          targetId: channelPermission.targetId,
+          permission: channelPermission.permission,
+          value: channelPermission.value
+        }))
+      );
+    }
+  }
+}
+
+export async function loadServerRelationsMap(
+  dataSource: DataSource,
+  serverIds: readonly string[]
+): Promise<Map<string, ServerRelationRecord>> {
+  const groupedRelations = new Map<string, ServerRelationRecord>();
+
+  if (serverIds.length === 0) {
+    return groupedRelations;
+  }
+
+  const [
+    tagRows,
+    channelRows,
+    roleRows,
+    userRoleRows,
+    channelPermissionRows
+  ] = await Promise.all([
+    dataSource.getRepository(ServerTagEntity).find({
+      where: { serverId: In([...serverIds]) }
+    }),
+    dataSource.getRepository(ServerChannelEntity).find({
+      where: { serverId: In([...serverIds]) }
+    }),
+    dataSource.getRepository(ServerRoleEntity).find({
+      where: { serverId: In([...serverIds]) }
+    }),
+    dataSource.getRepository(ServerUserRoleEntity).find({
+      where: { serverId: In([...serverIds]) }
+    }),
+    dataSource.getRepository(ServerChannelPermissionEntity).find({
+      where: { serverId: In([...serverIds]) }
+    })
+  ]);
+
+  for (const serverId of serverIds) {
+    groupedRelations.set(serverId, {
+      tags: [],
+      channels: [],
+      roles: [],
+      roleAssignments: [],
+      channelPermissions: []
+    });
+  }
+
+  for (const row of tagRows) {
+    groupedRelations.get(row.serverId)?.tags.push(row.value);
+  }
+
+  for (const row of channelRows) {
+    groupedRelations.get(row.serverId)?.channels.push({
+      id: row.channelId,
+      name: row.name,
+      type: row.type,
+      position: row.position
+    });
+  }
+
+  for (const row of roleRows) {
+    groupedRelations.get(row.serverId)?.roles.push({
+      id: row.roleId,
+      name: row.name,
+      color: row.color ?? undefined,
+      position: row.position,
+      isSystem: !!row.isSystem,
+      permissions: normalizePermissionMatrix({
+        manageServer: row.manageServer,
+        manageRoles: row.manageRoles,
+        manageChannels: row.manageChannels,
+        manageIcon: row.manageIcon,
+        kickMembers: row.kickMembers,
+        banMembers: row.banMembers,
+        manageBans: row.manageBans,
+        deleteMessages: row.deleteMessages,
+        joinVoice: row.joinVoice,
+        shareScreen: row.shareScreen,
+        uploadFiles: row.uploadFiles
+      })
+    });
+  }
+
+  for (const row of userRoleRows) {
+    const relation = groupedRelations.get(row.serverId);
+
+    if (!relation) {
+      continue;
+    }
+
+    const existing = relation.roleAssignments.find((assignment) => assignment.userId === row.userId || assignment.oderId === row.oderId);
+
+    if (existing) {
+      existing.roleIds = uniqueStrings([...existing.roleIds, row.roleId]);
+      continue;
+    }
+
+    relation.roleAssignments.push({
+      userId: row.userId,
+      oderId: row.oderId ?? undefined,
+      roleIds: [row.roleId]
+    });
+  }
+
+  for (const row of channelPermissionRows) {
+    groupedRelations.get(row.serverId)?.channelPermissions.push({
+      channelId: row.channelId,
+      targetType: row.targetType,
+      targetId: row.targetId,
+      permission: row.permission as ServerPermissionKeyPayload,
+      value: normalizePermissionState(row.value)
+    });
+  }
+
+  for (const [serverId, relation] of groupedRelations) {
+    relation.tags = tagRows
+      .filter((row) => row.serverId === serverId)
+      .sort((firstTag, secondTag) => firstTag.position - secondTag.position)
+      .map((row) => row.value);
+
+    relation.channels.sort(
+      (firstChannel, secondChannel) => firstChannel.position - secondChannel.position || compareText(firstChannel.name, secondChannel.name)
+    );
+
+    relation.roles.sort(compareRoles);
+    relation.roleAssignments.sort(compareAssignments);
+  }
+
+  return groupedRelations;
+}
+
+export function relationRecordToServerPayload(
+  row: Pick<ServerPayload, 'slowModeInterval'>,
+  relations: ServerRelationRecord
+): Pick<ServerPayload, 'tags' | 'channels' | 'roles' | 'roleAssignments' | 'channelPermissions' | 'slowModeInterval'> {
+  return {
+    tags: relations.tags,
+    channels: relations.channels,
+    roles: relations.roles,
+    roleAssignments: relations.roleAssignments,
+    channelPermissions: relations.channelPermissions,
+    slowModeInterval: row.slowModeInterval ?? 0
+  };
+}

server/src/cqrs/types.ts

@@ -37,6 +37,44 @@ export interface ServerChannelPayload {
   position: number;
 }
 
+export type PermissionStatePayload = 'allow' | 'deny' | 'inherit';
+
+export type ServerPermissionKeyPayload =
+  | 'manageServer'
+  | 'manageRoles'
+  | 'manageChannels'
+  | 'manageIcon'
+  | 'kickMembers'
+  | 'banMembers'
+  | 'manageBans'
+  | 'deleteMessages'
+  | 'joinVoice'
+  | 'shareScreen'
+  | 'uploadFiles';
+
+export interface AccessRolePayload {
+  id: string;
+  name: string;
+  color?: string;
+  position: number;
+  isSystem?: boolean;
+  permissions?: Partial<Record<ServerPermissionKeyPayload, PermissionStatePayload>>;
+}
+
+export interface RoleAssignmentPayload {
+  userId: string;
+  oderId?: string;
+  roleIds: string[];
+}
+
+export interface ChannelPermissionPayload {
+  channelId: string;
+  targetType: 'role' | 'user';
+  targetId: string;
+  permission: ServerPermissionKeyPayload;
+  value: PermissionStatePayload;
+}
+
 export interface ServerPayload {
   id: string;
   name: string;
@@ -48,8 +86,12 @@ export interface ServerPayload {
   isPrivate: boolean;
   maxUsers: number;
   currentUsers: number;
+  slowModeInterval?: number;
   tags: string[];
   channels: ServerChannelPayload[];
+  roles?: AccessRolePayload[];
+  roleAssignments?: RoleAssignmentPayload[];
+  channelPermissions?: ChannelPermissionPayload[];
   createdAt: number;
   lastSeen: number;
 }

server/src/db/database.ts

@@ -4,6 +4,11 @@ import { DataSource } from 'typeorm';
 import {
   AuthUserEntity,
   ServerEntity,
+  ServerTagEntity,
+  ServerChannelEntity,
+  ServerRoleEntity,
+  ServerUserRoleEntity,
+  ServerChannelPermissionEntity,
   JoinRequestEntity,
   ServerMembershipEntity,
   ServerInviteEntity,
@@ -54,6 +59,11 @@ export async function initDatabase(): Promise<void> {
       entities: [
         AuthUserEntity,
         ServerEntity,
+        ServerTagEntity,
+        ServerChannelEntity,
+        ServerRoleEntity,
+        ServerUserRoleEntity,
+        ServerChannelPermissionEntity,
         JoinRequestEntity,
         ServerMembershipEntity,
         ServerInviteEntity,

server/src/entities/ServerChannelEntity.ts

@@ -0,0 +1,23 @@
+import {
+  Entity,
+  PrimaryColumn,
+  Column
+} from 'typeorm';
+
+@Entity('server_channels')
+export class ServerChannelEntity {
+  @PrimaryColumn('text')
+  serverId!: string;
+
+  @PrimaryColumn('text')
+  channelId!: string;
+
+  @Column('text')
+  name!: string;
+
+  @Column('text')
+  type!: 'text' | 'voice';
+
+  @Column('integer')
+  position!: number;
+}

server/src/entities/ServerChannelPermissionEntity.ts

@@ -0,0 +1,26 @@
+import {
+  Column,
+  Entity,
+  PrimaryColumn
+} from 'typeorm';
+
+@Entity('server_channel_permissions')
+export class ServerChannelPermissionEntity {
+  @PrimaryColumn('text')
+  serverId!: string;
+
+  @PrimaryColumn('text')
+  channelId!: string;
+
+  @PrimaryColumn('text')
+  targetType!: 'role' | 'user';
+
+  @PrimaryColumn('text')
+  targetId!: string;
+
+  @PrimaryColumn('text')
+  permission!: string;
+
+  @Column('text')
+  value!: 'allow' | 'deny' | 'inherit';
+}

server/src/entities/ServerEntity.ts

@@ -33,11 +33,8 @@ export class ServerEntity {
   @Column('integer', { default: 0 })
   currentUsers!: number;
 
-  @Column('text', { default: '[]' })
-  tags!: string;
-
-  @Column('text', { default: '[]' })
-  channels!: string;
+  @Column('integer', { default: 0 })
+  slowModeInterval!: number;
 
   @Column('integer')
   createdAt!: number;

server/src/entities/ServerRoleEntity.ts

@@ -0,0 +1,59 @@
+import {
+  Column,
+  Entity,
+  PrimaryColumn
+} from 'typeorm';
+
+@Entity('server_roles')
+export class ServerRoleEntity {
+  @PrimaryColumn('text')
+  serverId!: string;
+
+  @PrimaryColumn('text')
+  roleId!: string;
+
+  @Column('text')
+  name!: string;
+
+  @Column('text', { nullable: true })
+  color!: string | null;
+
+  @Column('integer')
+  position!: number;
+
+  @Column('integer', { default: 0 })
+  isSystem!: number;
+
+  @Column('text', { default: 'inherit' })
+  manageServer!: 'allow' | 'deny' | 'inherit';
+
+  @Column('text', { default: 'inherit' })
+  manageRoles!: 'allow' | 'deny' | 'inherit';
+
+  @Column('text', { default: 'inherit' })
+  manageChannels!: 'allow' | 'deny' | 'inherit';
+
+  @Column('text', { default: 'inherit' })
+  manageIcon!: 'allow' | 'deny' | 'inherit';
+
+  @Column('text', { default: 'inherit' })
+  kickMembers!: 'allow' | 'deny' | 'inherit';
+
+  @Column('text', { default: 'inherit' })
+  banMembers!: 'allow' | 'deny' | 'inherit';
+
+  @Column('text', { default: 'inherit' })
+  manageBans!: 'allow' | 'deny' | 'inherit';
+
+  @Column('text', { default: 'inherit' })
+  deleteMessages!: 'allow' | 'deny' | 'inherit';
+
+  @Column('text', { default: 'inherit' })
+  joinVoice!: 'allow' | 'deny' | 'inherit';
+
+  @Column('text', { default: 'inherit' })
+  shareScreen!: 'allow' | 'deny' | 'inherit';
+
+  @Column('text', { default: 'inherit' })
+  uploadFiles!: 'allow' | 'deny' | 'inherit';
+}

server/src/entities/ServerTagEntity.ts

@@ -0,0 +1,17 @@
+import {
+  Entity,
+  PrimaryColumn,
+  Column
+} from 'typeorm';
+
+@Entity('server_tags')
+export class ServerTagEntity {
+  @PrimaryColumn('text')
+  serverId!: string;
+
+  @PrimaryColumn('integer')
+  position!: number;
+
+  @Column('text')
+  value!: string;
+}

server/src/entities/ServerUserRoleEntity.ts

@@ -0,0 +1,20 @@
+import {
+  Column,
+  Entity,
+  PrimaryColumn
+} from 'typeorm';
+
+@Entity('server_user_roles')
+export class ServerUserRoleEntity {
+  @PrimaryColumn('text')
+  serverId!: string;
+
+  @PrimaryColumn('text')
+  userId!: string;
+
+  @PrimaryColumn('text')
+  roleId!: string;
+
+  @Column('text', { nullable: true })
+  oderId!: string | null;
+}

server/src/entities/index.ts

@@ -1,5 +1,10 @@
 export { AuthUserEntity } from './AuthUserEntity';
 export { ServerEntity } from './ServerEntity';
+export { ServerTagEntity } from './ServerTagEntity';
+export { ServerChannelEntity } from './ServerChannelEntity';
+export { ServerRoleEntity } from './ServerRoleEntity';
+export { ServerUserRoleEntity } from './ServerUserRoleEntity';
+export { ServerChannelPermissionEntity } from './ServerChannelPermissionEntity';
 export { JoinRequestEntity } from './JoinRequestEntity';
 export { ServerMembershipEntity } from './ServerMembershipEntity';
 export { ServerInviteEntity } from './ServerInviteEntity';

server/src/migrations/1000000000004-NormalizeServerArrays.ts

@@ -0,0 +1,142 @@
+import { MigrationInterface, QueryRunner } from 'typeorm';
+
+type LegacyServerRow = {
+  id: string;
+  tags: string | null;
+  channels: string | null;
+};
+
+type LegacyServerChannel = {
+  id?: unknown;
+  name?: unknown;
+  type?: unknown;
+  position?: unknown;
+};
+
+function parseArray<T>(raw: string | null): T[] {
+  try {
+    const parsed = JSON.parse(raw || '[]');
+
+    return Array.isArray(parsed) ? parsed as T[] : [];
+  } catch {
+    return [];
+  }
+}
+
+function normalizeChannelName(name: string): string {
+  return name.trim().replace(/\s+/g, ' ');
+}
+
+function channelNameKey(type: 'text' | 'voice', name: string): string {
+  return `${type}:${normalizeChannelName(name).toLocaleLowerCase()}`;
+}
+
+function isFiniteNumber(value: unknown): value is number {
+  return typeof value === 'number' && Number.isFinite(value);
+}
+
+function normalizeServerTags(raw: string | null): string[] {
+  return parseArray<unknown>(raw).filter((tag): tag is string => typeof tag === 'string');
+}
+
+function normalizeServerChannels(raw: string | null) {
+  const channels = parseArray<LegacyServerChannel>(raw);
+  const seenIds = new Set<string>();
+  const seenNames = new Set<string>();
+
+  return channels.flatMap((channel, index) => {
+    const id = typeof channel.id === 'string' ? channel.id.trim() : '';
+    const name = typeof channel.name === 'string' ? normalizeChannelName(channel.name) : '';
+    const type = channel.type === 'text' || channel.type === 'voice' ? channel.type : null;
+    const position = isFiniteNumber(channel.position) ? channel.position : index;
+    const nameKey = type ? channelNameKey(type, name) : '';
+
+    if (!id || !name || !type || seenIds.has(id) || seenNames.has(nameKey)) {
+      return [];
+    }
+
+    seenIds.add(id);
+    seenNames.add(nameKey);
+
+    return [{
+      channelId: id,
+      name,
+      type,
+      position
+    }];
+  });
+}
+
+export class NormalizeServerArrays1000000000004 implements MigrationInterface {
+  name = 'NormalizeServerArrays1000000000004';
+
+  public async up(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(`
+      CREATE TABLE IF NOT EXISTS "server_tags" (
+        "serverId"  TEXT NOT NULL,
+        "position"  INTEGER NOT NULL,
+        "value"     TEXT NOT NULL,
+        PRIMARY KEY ("serverId", "position")
+      )
+    `);
+    await queryRunner.query(`CREATE INDEX IF NOT EXISTS "idx_server_tags_serverId" ON "server_tags" ("serverId")`);
+
+    await queryRunner.query(`
+      CREATE TABLE IF NOT EXISTS "server_channels" (
+        "serverId"  TEXT NOT NULL,
+        "channelId" TEXT NOT NULL,
+        "name"      TEXT NOT NULL,
+        "type"      TEXT NOT NULL,
+        "position"  INTEGER NOT NULL,
+        PRIMARY KEY ("serverId", "channelId")
+      )
+    `);
+    await queryRunner.query(`CREATE INDEX IF NOT EXISTS "idx_server_channels_serverId" ON "server_channels" ("serverId")`);
+
+    const rows = await queryRunner.query(`SELECT "id", "tags", "channels" FROM "servers"`) as LegacyServerRow[];
+
+    for (const row of rows) {
+      for (const [position, tag] of normalizeServerTags(row.tags).entries()) {
+        await queryRunner.query(
+          `INSERT OR REPLACE INTO "server_tags" ("serverId", "position", "value") VALUES (?, ?, ?)`,
+          [row.id, position, tag]
+        );
+      }
+
+      for (const channel of normalizeServerChannels(row.channels)) {
+        await queryRunner.query(
+          `INSERT OR REPLACE INTO "server_channels" ("serverId", "channelId", "name", "type", "position") VALUES (?, ?, ?, ?, ?)`,
+          [row.id, channel.channelId, channel.name, channel.type, channel.position]
+        );
+      }
+    }
+
+    await queryRunner.query(`
+      CREATE TABLE "servers_next" (
+        "id"             TEXT PRIMARY KEY NOT NULL,
+        "name"           TEXT NOT NULL,
+        "description"    TEXT,
+        "ownerId"        TEXT NOT NULL,
+        "ownerPublicKey" TEXT NOT NULL,
+        "isPrivate"      INTEGER NOT NULL DEFAULT 0,
+        "maxUsers"       INTEGER NOT NULL DEFAULT 0,
+        "currentUsers"   INTEGER NOT NULL DEFAULT 0,
+        "createdAt"      INTEGER NOT NULL,
+        "lastSeen"       INTEGER NOT NULL,
+        "passwordHash"   TEXT
+      )
+    `);
+    await queryRunner.query(`
+      INSERT INTO "servers_next" ("id", "name", "description", "ownerId", "ownerPublicKey", "isPrivate", "maxUsers", "currentUsers", "createdAt", "lastSeen", "passwordHash")
+      SELECT "id", "name", "description", "ownerId", "ownerPublicKey", "isPrivate", "maxUsers", "currentUsers", "createdAt", "lastSeen", "passwordHash"
+      FROM "servers"
+    `);
+    await queryRunner.query(`DROP TABLE "servers"`);
+    await queryRunner.query(`ALTER TABLE "servers_next" RENAME TO "servers"`);
+  }
+
+  public async down(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(`DROP TABLE IF EXISTS "server_channels"`);
+    await queryRunner.query(`DROP TABLE IF EXISTS "server_tags"`);
+  }
+}

server/src/migrations/1000000000005-ServerRoleAccessControl.ts

@@ -0,0 +1,196 @@
+import { MigrationInterface, QueryRunner } from 'typeorm';
+
+type LegacyServerRow = {
+  id: string;
+  name: string;
+  description: string | null;
+  ownerId: string;
+  ownerPublicKey: string;
+  passwordHash: string | null;
+  isPrivate: number;
+  maxUsers: number;
+  currentUsers: number;
+  createdAt: number;
+  lastSeen: number;
+};
+
+const SYSTEM_ROLE_IDS = {
+  everyone: 'system-everyone',
+  moderator: 'system-moderator',
+  admin: 'system-admin'
+} as const;
+
+function buildDefaultServerRoles() {
+  return [
+    {
+      roleId: SYSTEM_ROLE_IDS.everyone,
+      name: '@everyone',
+      color: '#6b7280',
+      position: 0,
+      isSystem: 1,
+      manageServer: 'inherit',
+      manageRoles: 'inherit',
+      manageChannels: 'inherit',
+      manageIcon: 'inherit',
+      kickMembers: 'inherit',
+      banMembers: 'inherit',
+      manageBans: 'inherit',
+      deleteMessages: 'inherit',
+      joinVoice: 'allow',
+      shareScreen: 'allow',
+      uploadFiles: 'allow'
+    },
+    {
+      roleId: SYSTEM_ROLE_IDS.moderator,
+      name: 'Moderator',
+      color: '#10b981',
+      position: 200,
+      isSystem: 1,
+      manageServer: 'inherit',
+      manageRoles: 'inherit',
+      manageChannels: 'inherit',
+      manageIcon: 'inherit',
+      kickMembers: 'allow',
+      banMembers: 'inherit',
+      manageBans: 'inherit',
+      deleteMessages: 'allow',
+      joinVoice: 'inherit',
+      shareScreen: 'inherit',
+      uploadFiles: 'inherit'
+    },
+    {
+      roleId: SYSTEM_ROLE_IDS.admin,
+      name: 'Admin',
+      color: '#60a5fa',
+      position: 300,
+      isSystem: 1,
+      manageServer: 'inherit',
+      manageRoles: 'inherit',
+      manageChannels: 'allow',
+      manageIcon: 'allow',
+      kickMembers: 'allow',
+      banMembers: 'allow',
+      manageBans: 'allow',
+      deleteMessages: 'allow',
+      joinVoice: 'inherit',
+      shareScreen: 'inherit',
+      uploadFiles: 'inherit'
+    }
+  ];
+}
+
+export class ServerRoleAccessControl1000000000005 implements MigrationInterface {
+  name = 'ServerRoleAccessControl1000000000005';
+
+  public async up(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(`
+      CREATE TABLE IF NOT EXISTS "server_roles" (
+        "serverId" TEXT NOT NULL,
+        "roleId" TEXT NOT NULL,
+        "name" TEXT NOT NULL,
+        "color" TEXT,
+        "position" INTEGER NOT NULL,
+        "isSystem" INTEGER NOT NULL DEFAULT 0,
+        "manageServer" TEXT NOT NULL DEFAULT 'inherit',
+        "manageRoles" TEXT NOT NULL DEFAULT 'inherit',
+        "manageChannels" TEXT NOT NULL DEFAULT 'inherit',
+        "manageIcon" TEXT NOT NULL DEFAULT 'inherit',
+        "kickMembers" TEXT NOT NULL DEFAULT 'inherit',
+        "banMembers" TEXT NOT NULL DEFAULT 'inherit',
+        "manageBans" TEXT NOT NULL DEFAULT 'inherit',
+        "deleteMessages" TEXT NOT NULL DEFAULT 'inherit',
+        "joinVoice" TEXT NOT NULL DEFAULT 'inherit',
+        "shareScreen" TEXT NOT NULL DEFAULT 'inherit',
+        "uploadFiles" TEXT NOT NULL DEFAULT 'inherit',
+        PRIMARY KEY ("serverId", "roleId")
+      )
+    `);
+    await queryRunner.query(`CREATE INDEX IF NOT EXISTS "idx_server_roles_serverId" ON "server_roles" ("serverId")`);
+
+    await queryRunner.query(`
+      CREATE TABLE IF NOT EXISTS "server_user_roles" (
+        "serverId" TEXT NOT NULL,
+        "userId" TEXT NOT NULL,
+        "roleId" TEXT NOT NULL,
+        "oderId" TEXT,
+        PRIMARY KEY ("serverId", "userId", "roleId")
+      )
+    `);
+    await queryRunner.query(`CREATE INDEX IF NOT EXISTS "idx_server_user_roles_serverId" ON "server_user_roles" ("serverId")`);
+
+    await queryRunner.query(`
+      CREATE TABLE IF NOT EXISTS "server_channel_permissions" (
+        "serverId" TEXT NOT NULL,
+        "channelId" TEXT NOT NULL,
+        "targetType" TEXT NOT NULL,
+        "targetId" TEXT NOT NULL,
+        "permission" TEXT NOT NULL,
+        "value" TEXT NOT NULL,
+        PRIMARY KEY ("serverId", "channelId", "targetType", "targetId", "permission")
+      )
+    `);
+    await queryRunner.query(`CREATE INDEX IF NOT EXISTS "idx_server_channel_permissions_serverId" ON "server_channel_permissions" ("serverId")`);
+
+    const servers = await queryRunner.query(`
+      SELECT "id", "name", "description", "ownerId", "ownerPublicKey", "passwordHash", "isPrivate", "maxUsers", "currentUsers", "createdAt", "lastSeen"
+      FROM "servers"
+    `) as LegacyServerRow[];
+
+    for (const server of servers) {
+      for (const role of buildDefaultServerRoles()) {
+        await queryRunner.query(
+          `INSERT OR REPLACE INTO "server_roles" ("serverId", "roleId", "name", "color", "position", "isSystem", "manageServer", "manageRoles", "manageChannels", "manageIcon", "kickMembers", "banMembers", "manageBans", "deleteMessages", "joinVoice", "shareScreen", "uploadFiles") VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`,
+          [
+            server.id,
+            role.roleId,
+            role.name,
+            role.color,
+            role.position,
+            role.isSystem,
+            role.manageServer,
+            role.manageRoles,
+            role.manageChannels,
+            role.manageIcon,
+            role.kickMembers,
+            role.banMembers,
+            role.manageBans,
+            role.deleteMessages,
+            role.joinVoice,
+            role.shareScreen,
+            role.uploadFiles
+          ]
+        );
+      }
+    }
+
+    await queryRunner.query(`
+      CREATE TABLE "servers_next" (
+        "id" TEXT PRIMARY KEY NOT NULL,
+        "name" TEXT NOT NULL,
+        "description" TEXT,
+        "ownerId" TEXT NOT NULL,
+        "ownerPublicKey" TEXT NOT NULL,
+        "passwordHash" TEXT,
+        "isPrivate" INTEGER NOT NULL DEFAULT 0,
+        "maxUsers" INTEGER NOT NULL DEFAULT 0,
+        "currentUsers" INTEGER NOT NULL DEFAULT 0,
+        "slowModeInterval" INTEGER NOT NULL DEFAULT 0,
+        "createdAt" INTEGER NOT NULL,
+        "lastSeen" INTEGER NOT NULL
+      )
+    `);
+    await queryRunner.query(`
+      INSERT INTO "servers_next" ("id", "name", "description", "ownerId", "ownerPublicKey", "passwordHash", "isPrivate", "maxUsers", "currentUsers", "slowModeInterval", "createdAt", "lastSeen")
+      SELECT "id", "name", "description", "ownerId", "ownerPublicKey", "passwordHash", "isPrivate", "maxUsers", "currentUsers", 0, "createdAt", "lastSeen"
+      FROM "servers"
+    `);
+    await queryRunner.query(`DROP TABLE "servers"`);
+    await queryRunner.query(`ALTER TABLE "servers_next" RENAME TO "servers"`);
+  }
+
+  public async down(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(`DROP TABLE IF EXISTS "server_channel_permissions"`);
+    await queryRunner.query(`DROP TABLE IF EXISTS "server_user_roles"`);
+    await queryRunner.query(`DROP TABLE IF EXISTS "server_roles"`);
+  }
+}

server/src/migrations/index.ts

@@ -2,10 +2,14 @@ import { InitialSchema1000000000000 } from './1000000000000-InitialSchema';
 import { ServerAccessControl1000000000001 } from './1000000000001-ServerAccessControl';
 import { ServerChannels1000000000002 } from './1000000000002-ServerChannels';
 import { RepairLegacyVoiceChannels1000000000003 } from './1000000000003-RepairLegacyVoiceChannels';
+import { NormalizeServerArrays1000000000004 } from './1000000000004-NormalizeServerArrays';
+import { ServerRoleAccessControl1000000000005 } from './1000000000005-ServerRoleAccessControl';
 
 export const serverMigrations = [
 	InitialSchema1000000000000,
 	ServerAccessControl1000000000001,
 	ServerChannels1000000000002,
-	RepairLegacyVoiceChannels1000000000003
+	RepairLegacyVoiceChannels1000000000003,
+	NormalizeServerArrays1000000000004,
+	ServerRoleAccessControl1000000000005
 ];

server/src/routes/index.ts

@@ -1,6 +1,7 @@
 import { Express } from 'express';
 import healthRouter from './health';
 import klipyRouter from './klipy';
+import linkMetadataRouter from './link-metadata';
 import proxyRouter from './proxy';
 import usersRouter from './users';
 import serversRouter from './servers';
@@ -10,6 +11,7 @@ import { invitesApiRouter, invitePageRouter } from './invites';
 export function registerRoutes(app: Express): void {
   app.use('/api', healthRouter);
   app.use('/api', klipyRouter);
+  app.use('/api', linkMetadataRouter);
   app.use('/api', proxyRouter);
   app.use('/api/users', usersRouter);
   app.use('/api/servers', serversRouter);

server/src/routes/invites.ts

@@ -1,6 +1,5 @@
 import { Router } from 'express';
 import { getUserById } from '../cqrs';
-import { rowToServer } from '../cqrs/mappers';
 import { ServerPayload } from '../cqrs/types';
 import { getActiveServerInvite } from '../services/server-access.service';
 import {
@@ -283,7 +282,7 @@ invitesApiRouter.get('/:id', async (req, res) => {
     return res.status(404).json({ error: 'Invite link has expired or is invalid', errorCode: 'INVITE_EXPIRED' });
   }
 
-  const server = rowToServer(bundle.server);
+  const server = bundle.server;
 
   res.json({
     id: bundle.invite.id,
@@ -315,7 +314,7 @@ invitePageRouter.get('/:id', async (req, res) => {
     return;
   }
 
-  const server = rowToServer(bundle.server);
+  const server = bundle.server;
   const owner = await getUserById(server.ownerId);
 
   res.send(renderInvitePage({

server/src/routes/join-requests.ts

@@ -6,6 +6,7 @@ import {
   updateJoinRequestStatus
 } from '../cqrs';
 import { notifyUser } from '../websocket/broadcast';
+import { resolveServerPermission } from '../services/server-permissions.service';
 
 const router = Router();
 
@@ -19,7 +20,7 @@ router.put('/:id', async (req, res) => {
 
   const server = await getServerById(request.serverId);
 
-  if (!server || server.ownerId !== ownerId)
+  if (!server || !ownerId || !resolveServerPermission(server, String(ownerId), 'manageServer'))
     return res.status(403).json({ error: 'Not authorized' });
 
   await updateJoinRequestStatus(id, status as JoinRequestPayload['status']);

server/src/routes/link-metadata.ts

@@ -0,0 +1,292 @@
+import { Router } from 'express';
+import { getLinkPreviewConfig } from '../config/variables';
+import { resolveAndValidateHost, safeFetch } from './ssrf-guard';
+
+const router = Router();
+const REQUEST_TIMEOUT_MS = 8000;
+const MAX_HTML_BYTES = 512 * 1024;
+const BYTES_PER_MB = 1024 * 1024;
+const MAX_FIELD_LENGTH = 512;
+
+interface CachedMetadata {
+  title?: string;
+  description?: string;
+  imageUrl?: string;
+  siteName?: string;
+  failed?: boolean;
+  cachedAt: number;
+}
+
+const metadataCache = new Map<string, CachedMetadata>();
+
+let cacheByteEstimate = 0;
+
+function estimateEntryBytes(key: string, entry: CachedMetadata): number {
+  let bytes = key.length * 2;
+
+  if (entry.title)
+    bytes += entry.title.length * 2;
+
+  if (entry.description)
+    bytes += entry.description.length * 2;
+
+  if (entry.imageUrl)
+    bytes += entry.imageUrl.length * 2;
+
+  if (entry.siteName)
+    bytes += entry.siteName.length * 2;
+
+  return bytes + 64;
+}
+
+function cacheSet(key: string, entry: CachedMetadata): void {
+  const config = getLinkPreviewConfig();
+  const maxBytes = config.maxCacheSizeMb * BYTES_PER_MB;
+
+  if (metadataCache.has(key)) {
+    const existing = metadataCache.get(key) as CachedMetadata;
+
+    cacheByteEstimate -= estimateEntryBytes(key, existing);
+  }
+
+  const entryBytes = estimateEntryBytes(key, entry);
+
+  while (cacheByteEstimate + entryBytes > maxBytes && metadataCache.size > 0) {
+    const oldest = metadataCache.keys().next().value as string;
+    const oldestEntry = metadataCache.get(oldest) as CachedMetadata;
+
+    cacheByteEstimate -= estimateEntryBytes(oldest, oldestEntry);
+    metadataCache.delete(oldest);
+  }
+
+  metadataCache.set(key, entry);
+  cacheByteEstimate += entryBytes;
+}
+
+function truncateField(value: string | undefined): string | undefined {
+  if (!value)
+    return value;
+
+  if (value.length <= MAX_FIELD_LENGTH)
+    return value;
+
+  return value.slice(0, MAX_FIELD_LENGTH);
+}
+
+function sanitizeImageUrl(rawUrl: string | undefined, baseUrl: string): string | undefined {
+  if (!rawUrl)
+    return undefined;
+
+  try {
+    const resolved = new URL(rawUrl, baseUrl);
+
+    if (resolved.protocol !== 'http:' && resolved.protocol !== 'https:')
+      return undefined;
+
+    return resolved.href;
+  } catch {
+    return undefined;
+  }
+}
+
+function getMetaContent(html: string, patterns: RegExp[]): string | undefined {
+  for (const pattern of patterns) {
+    const match = pattern.exec(html);
+
+    if (match?.[1])
+      return decodeHtmlEntities(match[1].trim());
+  }
+
+  return undefined;
+}
+
+function decodeHtmlEntities(text: string): string {
+  return text
+    .replace(/&amp;/g, '&')
+    .replace(/&lt;/g, '<')
+    .replace(/&gt;/g, '>')
+    .replace(/&quot;/g, '"')
+    .replace(/&#39;/g, "'")
+    .replace(/&#x27;/g, "'")
+    .replace(/&#x2F;/g, '/');
+}
+
+function parseMetadata(html: string, url: string): CachedMetadata {
+  const title = getMetaContent(html, [
+    /<meta[^>]+property=["']og:title["'][^>]+content=["']([^"']+)["']/i,
+    /<meta[^>]+content=["']([^"']+)["'][^>]+property=["']og:title["']/i,
+    /<meta[^>]+name=["']twitter:title["'][^>]+content=["']([^"']+)["']/i,
+    /<meta[^>]+content=["']([^"']+)["'][^>]+name=["']twitter:title["']/i,
+    /<title[^>]*>([^<]+)<\/title>/i
+  ]);
+  const description = getMetaContent(html, [
+    /<meta[^>]+property=["']og:description["'][^>]+content=["']([^"']+)["']/i,
+    /<meta[^>]+content=["']([^"']+)["'][^>]+property=["']og:description["']/i,
+    /<meta[^>]+name=["']twitter:description["'][^>]+content=["']([^"']+)["']/i,
+    /<meta[^>]+content=["']([^"']+)["'][^>]+name=["']twitter:description["']/i,
+    /<meta[^>]+name=["']description["'][^>]+content=["']([^"']+)["']/i,
+    /<meta[^>]+content=["']([^"']+)["'][^>]+name=["']description["']/i
+  ]);
+  const rawImageUrl = getMetaContent(html, [
+    /<meta[^>]+property=["']og:image["'][^>]+content=["']([^"']+)["']/i,
+    /<meta[^>]+content=["']([^"']+)["'][^>]+property=["']og:image["']/i,
+    /<meta[^>]+name=["']twitter:image["'][^>]+content=["']([^"']+)["']/i,
+    /<meta[^>]+content=["']([^"']+)["'][^>]+name=["']twitter:image["']/i
+  ]);
+  const siteNamePatterns = [
+    // eslint-disable-next-line @stylistic/js/array-element-newline
+    /<meta[^>]+property=["']og:site_name["'][^>]+content=["']([^"']+)["']/i,
+    /<meta[^>]+content=["']([^"']+)["'][^>]+property=["']og:site_name["']/i
+  ];
+  const siteName = getMetaContent(html, siteNamePatterns);
+  const imageUrl = sanitizeImageUrl(rawImageUrl, url);
+
+  return {
+    title: truncateField(title),
+    description: truncateField(description),
+    imageUrl,
+    siteName: truncateField(siteName),
+    cachedAt: Date.now()
+  };
+}
+
+function evictExpired(): void {
+  const config = getLinkPreviewConfig();
+
+  if (config.cacheTtlMinutes === 0) {
+    cacheByteEstimate = 0;
+    metadataCache.clear();
+
+    return;
+  }
+
+  const ttlMs = config.cacheTtlMinutes * 60 * 1000;
+  const now = Date.now();
+
+  for (const [key, entry] of metadataCache) {
+    if (now - entry.cachedAt > ttlMs) {
+      cacheByteEstimate -= estimateEntryBytes(key, entry);
+      metadataCache.delete(key);
+    }
+  }
+}
+
+router.get('/link-metadata', async (req, res) => {
+  try {
+    const config = getLinkPreviewConfig();
+
+    if (!config.enabled) {
+      return res.status(403).json({ error: 'Link previews are disabled' });
+    }
+
+    const url = String(req.query.url || '');
+
+    if (!/^https?:\/\//i.test(url)) {
+      return res.status(400).json({ error: 'Invalid URL' });
+    }
+
+    const hostAllowed = await resolveAndValidateHost(url);
+
+    if (!hostAllowed) {
+      return res.status(400).json({ error: 'URL resolves to a blocked address' });
+    }
+
+    evictExpired();
+
+    const cached = metadataCache.get(url);
+
+    if (cached) {
+      const { cachedAt, ...metadata } = cached;
+
+      console.log(`[Link Metadata] Cache hit for ${url} (cached at ${new Date(cachedAt).toISOString()})`);
+      return res.json(metadata);
+    }
+
+    console.log(`[Link Metadata] Cache miss for ${url}. Fetching...`);
+
+    const controller = new AbortController();
+    const timeout = setTimeout(() => controller.abort(), REQUEST_TIMEOUT_MS);
+    const response = await safeFetch(url, {
+      signal: controller.signal,
+      headers: {
+        'Accept': 'text/html',
+        'User-Agent': 'MetoYou-LinkPreview/1.0'
+      }
+    });
+
+    clearTimeout(timeout);
+
+    if (!response || !response.ok) {
+      const failed: CachedMetadata = { failed: true, cachedAt: Date.now() };
+
+      cacheSet(url, failed);
+
+      return res.json({ failed: true });
+    }
+
+    const contentType = response.headers.get('content-type') || '';
+
+    if (!contentType.includes('text/html')) {
+      const failed: CachedMetadata = { failed: true, cachedAt: Date.now() };
+
+      cacheSet(url, failed);
+
+      return res.json({ failed: true });
+    }
+
+    const reader = response.body?.getReader();
+
+    if (!reader) {
+      const failed: CachedMetadata = { failed: true, cachedAt: Date.now() };
+
+      cacheSet(url, failed);
+
+      return res.json({ failed: true });
+    }
+
+    const chunks: Uint8Array[] = [];
+
+    let totalBytes = 0;
+    let done = false;
+
+    while (!done) {
+      const result = await reader.read();
+
+      done = result.done;
+
+      if (result.value) {
+        chunks.push(result.value);
+        totalBytes += result.value.length;
+
+        if (totalBytes > MAX_HTML_BYTES) {
+          reader.cancel();
+          break;
+        }
+      }
+    }
+
+    const html = Buffer.concat(chunks).toString('utf-8');
+    const metadata = parseMetadata(html, url);
+
+    cacheSet(url, metadata);
+
+    const { cachedAt, ...result } = metadata;
+
+    res.json(result);
+  } catch (err) {
+    const url = String(req.query.url || '');
+
+    if (url) {
+      cacheSet(url, { failed: true, cachedAt: Date.now() });
+    }
+
+    if ((err as { name?: string })?.name === 'AbortError') {
+      return res.json({ failed: true });
+    }
+
+    console.error('Link metadata error:', err);
+    res.json({ failed: true });
+  }
+});
+
+export default router;

server/src/routes/proxy.ts

@@ -1,4 +1,5 @@
 import { Router } from 'express';
+import { resolveAndValidateHost, safeFetch } from './ssrf-guard';
 
 const router = Router();
 
@@ -10,14 +11,20 @@ router.get('/image-proxy', async (req, res) => {
       return res.status(400).json({ error: 'Invalid URL' });
     }
 
+    const hostAllowed = await resolveAndValidateHost(url);
+
+    if (!hostAllowed) {
+      return res.status(400).json({ error: 'URL resolves to a blocked address' });
+    }
+
     const controller = new AbortController();
     const timeout = setTimeout(() => controller.abort(), 8000);
-    const response = await fetch(url, { redirect: 'follow', signal: controller.signal });
+    const response = await safeFetch(url, { signal: controller.signal });
 
     clearTimeout(timeout);
 
-    if (!response.ok) {
-      return res.status(response.status).end();
+    if (!response || !response.ok) {
+      return res.status(response?.status ?? 502).end();
     }
 
     const contentType = response.headers.get('content-type') || '';

server/src/routes/servers.ts

@@ -1,9 +1,6 @@
 import { Response, Router } from 'express';
 import { v4 as uuidv4 } from 'uuid';
-import {
-  ServerChannelPayload,
-  ServerPayload
-} from '../cqrs/types';
+import { ServerChannelPayload, ServerPayload } from '../cqrs/types';
 import {
   getAllPublicServers,
   getServerById,
@@ -30,21 +27,18 @@ import {
   buildInviteUrl,
   getRequestOrigin
 } from './invite-utils';
+import {
+  canManageServerUpdate,
+  canModerateServerMember,
+  resolveServerPermission
+} from '../services/server-permissions.service';
 
 const router = Router();
 
-function normalizeRole(role: unknown): string | null {
-  return typeof role === 'string' ? role.trim().toLowerCase() : null;
-}
-
 function channelNameKey(type: ServerChannelPayload['type'], name: string): string {
   return `${type}:${name.toLocaleLowerCase()}`;
 }
 
-function isAllowedRole(role: string | null, allowedRoles: string[]): boolean {
-  return !!role && allowedRoles.includes(role);
-}
-
 function normalizeServerChannels(value: unknown): ServerChannelPayload[] {
   if (!Array.isArray(value)) {
     return [];
@@ -212,15 +206,20 @@ router.put('/:id', async (req, res) => {
   } = req.body;
   const existing = await getServerById(id);
   const authenticatedOwnerId = currentOwnerId ?? req.body.ownerId;
-  const normalizedRole = normalizeRole(actingRole);
 
   if (!existing)
     return res.status(404).json({ error: 'Server not found' });
 
-  if (
-    existing.ownerId !== authenticatedOwnerId &&
-    !isAllowedRole(normalizedRole, ['host', 'admin'])
-  ) {
+  if (!authenticatedOwnerId) {
+    return res.status(400).json({ error: 'Missing currentOwnerId' });
+  }
+
+  if (!canManageServerUpdate(existing, authenticatedOwnerId, {
+    ...updates,
+    channels,
+    password,
+    actingRole
+  })) {
     return res.status(403).json({ error: 'Not authorized' });
   }
 
@@ -298,7 +297,7 @@ router.post('/:id/invites', async (req, res) => {
 
 router.post('/:id/moderation/kick', async (req, res) => {
   const { id: serverId } = req.params;
-  const { actorUserId, actorRole, targetUserId } = req.body;
+  const { actorUserId, targetUserId } = req.body;
   const server = await getServerById(serverId);
 
   if (!server) {
@@ -309,14 +308,7 @@ router.post('/:id/moderation/kick', async (req, res) => {
     return res.status(400).json({ error: 'Missing targetUserId', errorCode: 'MISSING_TARGET' });
   }
 
-  if (
-    server.ownerId !== actorUserId &&
-    !isAllowedRole(normalizeRole(actorRole), [
-      'host',
-      'admin',
-      'moderator'
-    ])
-  ) {
+  if (!canModerateServerMember(server, String(actorUserId || ''), String(targetUserId), 'kickMembers')) {
     return res.status(403).json({ error: 'Not authorized', errorCode: 'NOT_AUTHORIZED' });
   }
 
@@ -327,7 +319,7 @@ router.post('/:id/moderation/kick', async (req, res) => {
 
 router.post('/:id/moderation/ban', async (req, res) => {
   const { id: serverId } = req.params;
-  const { actorUserId, actorRole, targetUserId, banId, displayName, reason, expiresAt } = req.body;
+  const { actorUserId, targetUserId, banId, displayName, reason, expiresAt } = req.body;
   const server = await getServerById(serverId);
 
   if (!server) {
@@ -338,14 +330,7 @@ router.post('/:id/moderation/ban', async (req, res) => {
     return res.status(400).json({ error: 'Missing targetUserId', errorCode: 'MISSING_TARGET' });
   }
 
-  if (
-    server.ownerId !== actorUserId &&
-    !isAllowedRole(normalizeRole(actorRole), [
-      'host',
-      'admin',
-      'moderator'
-    ])
-  ) {
+  if (!canModerateServerMember(server, String(actorUserId || ''), String(targetUserId), 'banMembers')) {
     return res.status(403).json({ error: 'Not authorized', errorCode: 'NOT_AUTHORIZED' });
   }
 
@@ -364,21 +349,14 @@ router.post('/:id/moderation/ban', async (req, res) => {
 
 router.post('/:id/moderation/unban', async (req, res) => {
   const { id: serverId } = req.params;
-  const { actorUserId, actorRole, banId, targetUserId } = req.body;
+  const { actorUserId, banId, targetUserId } = req.body;
   const server = await getServerById(serverId);
 
   if (!server) {
     return res.status(404).json({ error: 'Server not found', errorCode: 'SERVER_NOT_FOUND' });
   }
 
-  if (
-    server.ownerId !== actorUserId &&
-    !isAllowedRole(normalizeRole(actorRole), [
-      'host',
-      'admin',
-      'moderator'
-    ])
-  ) {
+  if (!resolveServerPermission(server, String(actorUserId || ''), 'manageBans')) {
     return res.status(403).json({ error: 'Not authorized', errorCode: 'NOT_AUTHORIZED' });
   }
 

server/src/routes/ssrf-guard.ts

@@ -0,0 +1,119 @@
+import { lookup } from 'dns/promises';
+
+const MAX_REDIRECTS = 5;
+
+function isPrivateIp(ip: string): boolean {
+  if (
+    ip === '127.0.0.1' ||
+    ip === '::1' ||
+    ip === '0.0.0.0' ||
+    ip === '::'
+  )
+    return true;
+
+  // 10.x.x.x
+  if (ip.startsWith('10.'))
+    return true;
+
+  // 172.16.0.0 - 172.31.255.255
+  if (ip.startsWith('172.')) {
+    const second = parseInt(ip.split('.')[1], 10);
+
+    if (second >= 16 && second <= 31)
+      return true;
+  }
+
+  // 192.168.x.x
+  if (ip.startsWith('192.168.'))
+    return true;
+
+  // 169.254.x.x (link-local, AWS metadata)
+  if (ip.startsWith('169.254.'))
+    return true;
+
+  // IPv6 private ranges (fc00::/7, fe80::/10)
+  const lower = ip.toLowerCase();
+
+  if (lower.startsWith('fc') || lower.startsWith('fd') || lower.startsWith('fe80'))
+    return true;
+
+  return false;
+}
+
+export async function resolveAndValidateHost(url: string): Promise<boolean> {
+  let hostname: string;
+
+  try {
+    hostname = new URL(url).hostname;
+  } catch {
+    return false;
+  }
+
+  // Block obvious private hostnames
+  if (hostname === 'localhost' || hostname === 'metadata.google.internal')
+    return false;
+
+  // If hostname is already an IP literal, check it directly
+  if (/^[\d.]+$/.test(hostname) || hostname.startsWith('['))
+    return !isPrivateIp(hostname.replace(/[[\]]/g, ''));
+
+  try {
+    const { address } = await lookup(hostname);
+
+    return !isPrivateIp(address);
+  } catch {
+    return false;
+  }
+}
+
+export interface SafeFetchOptions {
+  signal?: AbortSignal;
+  headers?: Record<string, string>;
+}
+
+/**
+ * Fetches a URL while following redirects safely, validating each
+ * hop against SSRF (private/reserved IPs, blocked hostnames).
+ *
+ * The caller must validate the initial URL with `resolveAndValidateHost`
+ * before calling this function.
+ */
+export async function safeFetch(url: string, options: SafeFetchOptions = {}): Promise<Response | undefined> {
+  let currentUrl = url;
+  let response: Response | undefined;
+
+  for (let redirects = 0; redirects <= MAX_REDIRECTS; redirects++) {
+    response = await fetch(currentUrl, {
+      redirect: 'manual',
+      signal: options.signal,
+      headers: options.headers
+    });
+
+    const location = response.headers.get('location');
+
+    if (response.status >= 300 && response.status < 400 && location) {
+      let nextUrl: string;
+
+      try {
+        nextUrl = new URL(location, currentUrl).href;
+      } catch {
+        break;
+      }
+
+      if (!/^https?:\/\//i.test(nextUrl))
+        break;
+
+      const redirectAllowed = await resolveAndValidateHost(nextUrl);
+
+      if (!redirectAllowed)
+        break;
+
+      currentUrl = nextUrl;
+      continue;
+    }
+
+    break;
+  }
+
+  return response;
+}

server/src/services/server-access.service.ts

@@ -8,6 +8,7 @@ import {
   ServerMembershipEntity
 } from '../entities';
 import { rowToServer } from '../cqrs/mappers';
+import { loadServerRelationsMap } from '../cqrs/relations';
 import { ServerPayload } from '../cqrs/types';
 
 export const SERVER_INVITE_EXPIRY_MS = 10 * 24 * 60 * 60 * 1000;
@@ -57,6 +58,12 @@ function getBanRepository() {
   return getDataSource().getRepository(ServerBanEntity);
 }
 
+async function toServerPayload(server: ServerEntity): Promise<ServerPayload> {
+  const relationsByServerId = await loadServerRelationsMap(getDataSource(), [server.id]);
+
+  return rowToServer(server, relationsByServerId.get(server.id));
+}
+
 function normalizePassword(password?: string | null): string | null {
   const normalized = password?.trim() ?? '';
 
@@ -194,7 +201,7 @@ export async function createServerInvite(
 
 export async function getActiveServerInvite(
   inviteId: string
-): Promise<{ invite: ServerInviteEntity; server: ServerEntity } | null> {
+): Promise<{ invite: ServerInviteEntity; server: ServerPayload } | null> {
   await pruneExpiredServerAccessArtifacts();
 
   const invite = await getInviteRepository().findOne({ where: { id: inviteId } });
@@ -214,7 +221,10 @@ export async function getActiveServerInvite(
     return null;
   }
 
-  return { invite, server };
+  return {
+    invite,
+    server: await toServerPayload(server)
+  };
 }
 
 export async function joinServerWithAccess(options: {
@@ -242,7 +252,7 @@ export async function joinServerWithAccess(options: {
 
     return {
       joinedBefore: !!existingMembership,
-      server: rowToServer(server),
+      server: await toServerPayload(server),
       via: 'membership'
     };
   }
@@ -260,7 +270,7 @@ export async function joinServerWithAccess(options: {
 
     return {
       joinedBefore: !!existingMembership,
-      server: rowToServer(server),
+      server: await toServerPayload(server),
       via: 'invite'
     };
   }
@@ -272,7 +282,7 @@ export async function joinServerWithAccess(options: {
 
     return {
       joinedBefore: true,
-      server: rowToServer(server),
+      server: await toServerPayload(server),
       via: 'membership'
     };
   }
@@ -288,7 +298,7 @@ export async function joinServerWithAccess(options: {
 
     return {
       joinedBefore: false,
-      server: rowToServer(server),
+      server: await toServerPayload(server),
       via: 'password'
     };
   }
@@ -301,7 +311,7 @@ export async function joinServerWithAccess(options: {
 
   return {
     joinedBefore: false,
-    server: rowToServer(server),
+    server: await toServerPayload(server),
     via: 'public'
   };
 }

server/src/services/server-permissions.service.ts

@@ -0,0 +1,191 @@
+import type {
+  AccessRolePayload,
+  PermissionStatePayload,
+  RoleAssignmentPayload,
+  ServerPayload,
+  ServerPermissionKeyPayload
+} from '../cqrs/types';
+import { normalizeServerRoleAssignments, normalizeServerRoles } from '../cqrs/relations';
+
+const SYSTEM_ROLE_IDS = {
+  everyone: 'system-everyone'
+} as const;
+
+interface ServerIdentity {
+  userId: string;
+  oderId?: string;
+}
+
+function getServerRoles(server: Pick<ServerPayload, 'roles'>): AccessRolePayload[] {
+  return normalizeServerRoles(server.roles);
+}
+
+function getServerAssignments(server: Pick<ServerPayload, 'roleAssignments' | 'roles'>): RoleAssignmentPayload[] {
+  return normalizeServerRoleAssignments(server.roleAssignments, getServerRoles(server));
+}
+
+function matchesIdentity(identity: ServerIdentity, assignment: RoleAssignmentPayload): boolean {
+  return assignment.userId === identity.userId
+    || assignment.oderId === identity.userId
+    || (!!identity.oderId && (assignment.userId === identity.oderId || assignment.oderId === identity.oderId));
+}
+
+function resolveAssignedRoleIds(server: Pick<ServerPayload, 'roleAssignments' | 'roles'>, identity: ServerIdentity): string[] {
+  const assignment = getServerAssignments(server).find((candidateAssignment) => matchesIdentity(identity, candidateAssignment));
+
+  return assignment?.roleIds ?? [];
+}
+
+function compareRolePosition(firstRole: AccessRolePayload, secondRole: AccessRolePayload): number {
+  if (firstRole.position !== secondRole.position) {
+    return firstRole.position - secondRole.position;
+  }
+
+  return firstRole.name.localeCompare(secondRole.name, undefined, { sensitivity: 'base' });
+}
+
+function resolveRolePermissionState(
+  roles: readonly AccessRolePayload[],
+  assignedRoleIds: readonly string[],
+  permission: ServerPermissionKeyPayload
+): PermissionStatePayload {
+  const roleLookup = new Map(roles.map((role) => [role.id, role]));
+  const effectiveRoles = [roleLookup.get(SYSTEM_ROLE_IDS.everyone), ...assignedRoleIds.map((roleId) => roleLookup.get(roleId))]
+    .filter((role): role is AccessRolePayload => !!role)
+    .sort(compareRolePosition);
+
+  let state: PermissionStatePayload = 'inherit';
+
+  for (const role of effectiveRoles) {
+    const nextState = role.permissions?.[permission] ?? 'inherit';
+
+    if (nextState !== 'inherit') {
+      state = nextState;
+    }
+  }
+
+  return state;
+}
+
+function resolveHighestRole(
+  server: Pick<ServerPayload, 'roleAssignments' | 'roles'>,
+  identity: ServerIdentity
+): AccessRolePayload | null {
+  const roles = getServerRoles(server);
+  const assignedRoleIds = resolveAssignedRoleIds(server, identity);
+  const roleLookup = new Map(roles.map((role) => [role.id, role]));
+  const assignedRoles = assignedRoleIds
+    .map((roleId) => roleLookup.get(roleId))
+    .filter((role): role is AccessRolePayload => !!role)
+    .sort((firstRole, secondRole) => compareRolePosition(secondRole, firstRole));
+
+  return assignedRoles[0] ?? roleLookup.get(SYSTEM_ROLE_IDS.everyone) ?? null;
+}
+
+export function isServerOwner(server: Pick<ServerPayload, 'ownerId'>, actorUserId: string): boolean {
+  return server.ownerId === actorUserId;
+}
+
+export function resolveServerPermission(
+  server: Pick<ServerPayload, 'ownerId' | 'roleAssignments' | 'roles'>,
+  actorUserId: string,
+  permission: ServerPermissionKeyPayload,
+  actorOderId?: string
+): boolean {
+  if (isServerOwner(server, actorUserId)) {
+    return true;
+  }
+
+  const roles = getServerRoles(server);
+  const assignedRoleIds = resolveAssignedRoleIds(server, {
+    userId: actorUserId,
+    oderId: actorOderId
+  });
+
+  return resolveRolePermissionState(roles, assignedRoleIds, permission) === 'allow';
+}
+
+export function canManageServerUpdate(
+  server: Pick<ServerPayload, 'ownerId' | 'roleAssignments' | 'roles'>,
+  actorUserId: string,
+  updates: Record<string, unknown>,
+  actorOderId?: string
+): boolean {
+  if (isServerOwner(server, actorUserId)) {
+    return true;
+  }
+
+  if (typeof updates['ownerId'] === 'string' || typeof updates['ownerPublicKey'] === 'string') {
+    return false;
+  }
+
+  const requiredPermissions = new Set<ServerPermissionKeyPayload>();
+
+  if (
+    Array.isArray(updates['roles'])
+    || Array.isArray(updates['roleAssignments'])
+    || Array.isArray(updates['channelPermissions'])
+  ) {
+    requiredPermissions.add('manageRoles');
+  }
+
+  if (Array.isArray(updates['channels'])) {
+    requiredPermissions.add('manageChannels');
+  }
+
+  if (typeof updates['icon'] === 'string') {
+    requiredPermissions.add('manageIcon');
+  }
+
+  if (
+    typeof updates['name'] === 'string'
+    || typeof updates['description'] === 'string'
+    || typeof updates['isPrivate'] === 'boolean'
+    || typeof updates['maxUsers'] === 'number'
+    || typeof updates['password'] === 'string'
+    || typeof updates['passwordHash'] === 'string'
+    || typeof updates['slowModeInterval'] === 'number'
+  ) {
+    requiredPermissions.add('manageServer');
+  }
+
+  return Array.from(requiredPermissions).every((permission) =>
+    resolveServerPermission(server, actorUserId, permission, actorOderId)
+  );
+}
+
+export function canModerateServerMember(
+  server: Pick<ServerPayload, 'ownerId' | 'roleAssignments' | 'roles'>,
+  actorUserId: string,
+  targetUserId: string,
+  permission: 'kickMembers' | 'banMembers' | 'manageBans',
+  actorOderId?: string,
+  targetOderId?: string
+): boolean {
+  if (!actorUserId || !targetUserId || actorUserId === targetUserId) {
+    return false;
+  }
+
+  if (isServerOwner(server, targetUserId) && !isServerOwner(server, actorUserId)) {
+    return false;
+  }
+
+  if (isServerOwner(server, actorUserId)) {
+    return true;
+  }
+
+  if (!resolveServerPermission(server, actorUserId, permission, actorOderId)) {
+    return false;
+  }
+
+  const actorRole = resolveHighestRole(server, {
+    userId: actorUserId,
+    oderId: actorOderId
+  });
+  const targetRole = resolveHighestRole(server, {
+    userId: targetUserId,
+    oderId: targetOderId
+  });
+
+  return (actorRole?.position ?? 0) > (targetRole?.position ?? 0);
+}

server/src/websocket/broadcast.ts

@@ -1,4 +1,6 @@
+import { WebSocket } from 'ws';
 import { connectedUsers } from './state';
+import { ConnectedUser } from './types';
 
 interface WsMessage {
   [key: string]: unknown;
@@ -24,6 +26,43 @@ export function notifyServerOwner(ownerId: string, message: WsMessage): void {
   }
 }
 
+export function getUniqueUsersInServer(serverId: string, excludeOderId?: string): ConnectedUser[] {
+  const usersByOderId = new Map<string, ConnectedUser>();
+
+  connectedUsers.forEach((user) => {
+    if (user.oderId === excludeOderId || !user.serverIds.has(serverId) || user.ws.readyState !== WebSocket.OPEN) {
+      return;
+    }
+
+    usersByOderId.set(user.oderId, user);
+  });
+
+  return Array.from(usersByOderId.values());
+}
+
+export function isOderIdConnectedToServer(oderId: string, serverId: string, excludeConnectionId?: string): boolean {
+  return Array.from(connectedUsers.entries()).some(([connectionId, user]) =>
+    connectionId !== excludeConnectionId
+    && user.oderId === oderId
+    && user.serverIds.has(serverId)
+    && user.ws.readyState === WebSocket.OPEN
+  );
+}
+
+export function getServerIdsForOderId(oderId: string, excludeConnectionId?: string): string[] {
+  const serverIds = new Set<string>();
+
+  connectedUsers.forEach((user, connectionId) => {
+    if (connectionId === excludeConnectionId || user.oderId !== oderId || user.ws.readyState !== WebSocket.OPEN) {
+      return;
+    }
+
+    user.serverIds.forEach((serverId) => serverIds.add(serverId));
+  });
+
+  return Array.from(serverIds);
+}
+
 export function notifyUser(oderId: string, message: WsMessage): void {
   const user = findUserByOderId(oderId);
 
@@ -33,5 +72,13 @@ export function notifyUser(oderId: string, message: WsMessage): void {
 }
 
 export function findUserByOderId(oderId: string) {
-  return Array.from(connectedUsers.values()).find(user => user.oderId === oderId);
+  let match: ConnectedUser | undefined;
+
+  connectedUsers.forEach((user) => {
+    if (user.oderId === oderId && user.ws.readyState === WebSocket.OPEN) {
+      match = user;
+    }
+  });
+
+  return match;
 }

server/src/websocket/handler.ts

@@ -1,6 +1,12 @@
 import { connectedUsers } from './state';
 import { ConnectedUser } from './types';
-import { broadcastToServer, findUserByOderId } from './broadcast';
+import {
+  broadcastToServer,
+  findUserByOderId,
+  getServerIdsForOderId,
+  getUniqueUsersInServer,
+  isOderIdConnectedToServer
+} from './broadcast';
 import { authorizeWebSocketJoin } from '../services/server-access.service';
 
 interface WsMessage {
@@ -14,24 +20,53 @@ function normalizeDisplayName(value: unknown, fallback = 'User'): string {
   return normalized || fallback;
 }
 
+function readMessageId(value: unknown): string | undefined {
+  if (typeof value !== 'string') {
+    return undefined;
+  }
+
+  const normalized = value.trim();
+
+  if (!normalized || normalized === 'undefined' || normalized === 'null') {
+    return undefined;
+  }
+
+  return normalized;
+}
+
 /** Sends the current user list for a given server to a single connected user. */
 function sendServerUsers(user: ConnectedUser, serverId: string): void {
-  const users = Array.from(connectedUsers.values())
-    .filter(cu => cu.serverIds.has(serverId) && cu.oderId !== user.oderId)
+  const users = getUniqueUsersInServer(serverId, user.oderId)
     .map(cu => ({ oderId: cu.oderId, displayName: normalizeDisplayName(cu.displayName) }));
 
   user.ws.send(JSON.stringify({ type: 'server_users', serverId, users }));
 }
 
 function handleIdentify(user: ConnectedUser, message: WsMessage, connectionId: string): void {
-  user.oderId = String(message['oderId'] || connectionId);
+  const newOderId = readMessageId(message['oderId']) ?? connectionId;
+
+  // Close stale connections from the same identity so offer routing
+  // always targets the freshest socket (e.g. after page refresh).
+  connectedUsers.forEach((existing, existingId) => {
+    if (existingId !== connectionId && existing.oderId === newOderId) {
+      console.log(`Closing stale connection for ${newOderId} (old=${existingId}, new=${connectionId})`);
+
+      try {
+        existing.ws.close();
+      } catch { /* already closing */ }
+
+      connectedUsers.delete(existingId);
+    }
+  });
+
+  user.oderId = newOderId;
   user.displayName = normalizeDisplayName(message['displayName'], normalizeDisplayName(user.displayName));
   connectedUsers.set(connectionId, user);
   console.log(`User identified: ${user.displayName} (${user.oderId})`);
 }
 
 async function handleJoinServer(user: ConnectedUser, message: WsMessage, connectionId: string): Promise<void> {
-  const sid = String(message['serverId']);
+  const sid = readMessageId(message['serverId']);
 
   if (!sid)
     return;
@@ -48,16 +83,20 @@ async function handleJoinServer(user: ConnectedUser, message: WsMessage, connect
     return;
   }
 
-  const isNew = !user.serverIds.has(sid);
+  const isNewConnectionMembership = !user.serverIds.has(sid);
+  const isNewIdentityMembership = isNewConnectionMembership && !isOderIdConnectedToServer(user.oderId, sid, connectionId);
 
   user.serverIds.add(sid);
   user.viewedServerId = sid;
   connectedUsers.set(connectionId, user);
-  console.log(`User ${normalizeDisplayName(user.displayName)} (${user.oderId}) joined server ${sid} (new=${isNew})`);
+  console.log(
+    `User ${normalizeDisplayName(user.displayName)} (${user.oderId}) joined server ${sid} `
+    + `(newConnection=${isNewConnectionMembership}, newIdentity=${isNewIdentityMembership})`
+  );
 
   sendServerUsers(user, sid);
 
-  if (isNew) {
+  if (isNewIdentityMembership) {
     broadcastToServer(sid, {
       type: 'user_joined',
       oderId: user.oderId,
@@ -68,7 +107,10 @@ async function handleJoinServer(user: ConnectedUser, message: WsMessage, connect
 }
 
 function handleViewServer(user: ConnectedUser, message: WsMessage, connectionId: string): void {
-  const viewSid = String(message['serverId']);
+  const viewSid = readMessageId(message['serverId']);
+
+  if (!viewSid)
+    return;
 
   user.viewedServerId = viewSid;
   connectedUsers.set(connectionId, user);
@@ -78,7 +120,7 @@ function handleViewServer(user: ConnectedUser, message: WsMessage, connectionId:
 }
 
 function handleLeaveServer(user: ConnectedUser, message: WsMessage, connectionId: string): void {
-  const leaveSid = (message['serverId'] as string | undefined) ?? user.viewedServerId;
+  const leaveSid = readMessageId(message['serverId']) ?? user.viewedServerId;
 
   if (!leaveSid)
     return;
@@ -90,17 +132,23 @@ function handleLeaveServer(user: ConnectedUser, message: WsMessage, connectionId
 
   connectedUsers.set(connectionId, user);
 
+  const remainingServerIds = getServerIdsForOderId(user.oderId, connectionId);
+
+  if (remainingServerIds.includes(leaveSid)) {
+    return;
+  }
+
   broadcastToServer(leaveSid, {
     type: 'user_left',
     oderId: user.oderId,
     displayName: normalizeDisplayName(user.displayName),
     serverId: leaveSid,
-    serverIds: Array.from(user.serverIds)
+    serverIds: remainingServerIds
   }, user.oderId);
 }
 
 function forwardRtcMessage(user: ConnectedUser, message: WsMessage): void {
-  const targetUserId = String(message['targetUserId'] || '');
+  const targetUserId = readMessageId(message['targetUserId']) ?? '';
 
   console.log(`Forwarding ${message.type} from ${user.oderId} to ${targetUserId}`);
 

server/src/websocket/index.ts

@@ -6,7 +6,11 @@ import {
 import { WebSocketServer, WebSocket } from 'ws';
 import { v4 as uuidv4 } from 'uuid';
 import { connectedUsers } from './state';
-import { broadcastToServer } from './broadcast';
+import {
+  broadcastToServer,
+  getServerIdsForOderId,
+  isOderIdConnectedToServer
+} from './broadcast';
 import { handleWebSocketMessage } from './handler';
 
 /** How often to ping all connected clients (ms). */
@@ -20,13 +24,19 @@ function removeDeadConnection(connectionId: string): void {
   if (user) {
     console.log(`Removing dead connection: ${user.displayName ?? 'Unknown'} (${user.oderId})`);
 
+    const remainingServerIds = getServerIdsForOderId(user.oderId, connectionId);
+
     user.serverIds.forEach((sid) => {
+      if (isOderIdConnectedToServer(user.oderId, sid, connectionId)) {
+        return;
+      }
+
       broadcastToServer(sid, {
         type: 'user_left',
         oderId: user.oderId,
         displayName: user.displayName,
         serverId: sid,
-        serverIds: []
+        serverIds: remainingServerIds
       }, user.oderId);
     });
 

toju-app/angular.json

@@ -96,8 +96,8 @@
               "budgets": [
                 {
                   "type": "initial",
-                  "maximumWarning": "1MB",
-                  "maximumError": "2.1MB"
+                  "maximumWarning": "2.2MB",
+                  "maximumError": "2.3MB"
                 },
                 {
                   "type": "anyComponentStyle",

toju-app/src/app/app.html

@@ -1,60 +1,156 @@
-<div class="h-screen bg-background text-foreground flex">
-  <!-- Global left servers rail always visible -->
-  <aside class="w-16 flex-shrink-0 border-r border-border bg-card">
-    <app-servers-rail class="h-full" />
-  </aside>
-  <main class="flex-1 min-w-0 relative overflow-hidden">
-    <!-- Custom draggable title bar -->
-    <app-title-bar />
+<div
+  appThemeNode="appRoot"
+  class="workspace-bright-theme relative h-screen overflow-hidden bg-background text-foreground"
+>
+  <div
+    class="grid h-full min-h-0 min-w-0 overflow-hidden"
+    [ngStyle]="appShellLayoutStyles()"
+  >
+    <aside
+      appThemeNode="serversRail"
+      class="min-h-0 overflow-hidden bg-transparent"
+      [class.hidden]="isThemeStudioFullscreen()"
+      [ngStyle]="serversRailLayoutStyles()"
+    >
+      <app-servers-rail class="block h-full" />
+    </aside>
 
-    @if (desktopUpdateState().restartRequired) {
-    <div class="absolute inset-x-0 top-10 z-20 px-4 pt-4 pointer-events-none">
-      <div class="pointer-events-auto mx-auto max-w-4xl rounded-xl border border-primary/30 bg-primary/10 p-4 shadow-2xl backdrop-blur-sm">
-        <div class="flex flex-col gap-4 lg:flex-row lg:items-center lg:justify-between">
-          <div>
-            <p class="text-sm font-semibold text-foreground">Update ready to install</p>
-            <p class="mt-1 text-sm text-muted-foreground">
-              MetoYou {{ desktopUpdateState().targetVersion || 'update' }} has been downloaded. Restart the app to finish applying it.
-            </p>
-          </div>
+    <main
+      appThemeNode="appWorkspace"
+      class="relative flex min-h-0 min-w-0 flex-col overflow-hidden bg-background"
+      [ngStyle]="appWorkspaceShellStyles()"
+    >
+      <app-title-bar class="block shrink-0" />
 
-          <div class="flex flex-wrap gap-2">
-            <button
-              type="button"
-              (click)="openUpdatesSettings()"
-              class="inline-flex items-center rounded-lg border border-border bg-secondary px-4 py-2 text-sm font-medium text-foreground transition-colors hover:bg-secondary/80"
-            >
-              Update settings
-            </button>
+      <div class="relative min-h-0 flex-1 overflow-hidden">
+        @if (isThemeStudioFullscreen()) {
+        <div class="theme-studio-fullscreen-shell absolute inset-0 overflow-y-auto overflow-x-hidden bg-background">
+          @if (themeStudioFullscreenComponent()) {
+          <ng-container *ngComponentOutlet="themeStudioFullscreenComponent()" />
+          } @else {
+          <div class="flex h-full items-center justify-center px-6 text-sm text-muted-foreground">Loading Theme Studio…</div>
+          }
+        </div>
+        } @else { @if (showDesktopUpdateNotice()) {
+        <div class="pointer-events-none absolute inset-x-0 top-0 z-20 px-4 pt-4">
+          <div class="pointer-events-auto mx-auto w-full max-w-xl">
+            <div class="relative rounded-xl border border-border/80 bg-card/95 px-4 py-3 shadow-lg backdrop-blur">
+              <button
+                type="button"
+                (click)="dismissDesktopUpdateNotice()"
+                class="absolute right-2 top-2 grid h-8 w-8 place-items-center rounded-lg text-muted-foreground transition-colors hover:bg-secondary hover:text-foreground"
+                aria-label="Dismiss update notice"
+              >
+                <ng-icon
+                  name="lucideX"
+                  class="h-4 w-4"
+                />
+              </button>
 
-            <button
-              type="button"
-              (click)="restartToApplyUpdate()"
-              class="inline-flex items-center rounded-lg bg-primary px-4 py-2 text-sm font-medium text-primary-foreground transition-colors hover:bg-primary/90"
-            >
-              Restart now
-            </button>
+              <div class="pr-10">
+                <p class="text-[11px] font-semibold uppercase tracking-[0.18em] text-primary">Update Ready</p>
+                <p class="mt-1 text-sm font-semibold text-foreground">
+                  Restart to install {{ desktopUpdateState().targetVersion || 'the latest update' }}
+                </p>
+              </div>
+
+              <p class="mt-1 pr-10 text-xs leading-5 text-muted-foreground">
+                The update has already been downloaded. Restart the app when you're ready to finish applying it.
+              </p>
+
+              <div class="mt-3 flex flex-wrap gap-2">
+                <button
+                  type="button"
+                  (click)="openUpdatesSettings()"
+                  class="inline-flex items-center rounded-lg border border-border bg-secondary px-3 py-1.5 text-xs font-medium text-foreground transition-colors hover:bg-secondary/80"
+                >
+                  Update settings
+                </button>
+
+                <button
+                  type="button"
+                  (click)="restartToApplyUpdate()"
+                  class="inline-flex items-center rounded-lg bg-primary px-3 py-1.5 text-xs font-semibold text-primary-foreground transition-colors hover:bg-primary/90"
+                >
+                  Restart now
+                </button>
+              </div>
+            </div>
           </div>
         </div>
+        }
+
+        <div class="absolute inset-0 overflow-auto">
+          <router-outlet />
+        </div>
+        }
       </div>
-    </div>
-    }
+    </main>
+  </div>
 
-    <!-- Content area fills below the title bar without global scroll -->
-    <div class="absolute inset-x-0 top-10 bottom-0 overflow-auto">
-      <router-outlet />
-    </div>
-  </main>
+  @if (isThemeStudioFullscreen()) {
+  <div
+    #themeStudioControlsRef
+    class="pointer-events-none absolute z-[80]"
+    [ngStyle]="themeStudioControlsPositionStyles()"
+  >
+    <div class="pointer-events-auto flex items-center gap-2 rounded-lg border border-border bg-card px-2 py-2 shadow-lg backdrop-blur">
+      <div
+        class="rounded-md border border-border bg-secondary px-3 py-1.5 text-[11px] font-semibold uppercase tracking-[0.18em] text-muted-foreground select-none cursor-grab"
+        [class.cursor-grabbing]="isDraggingThemeStudioControls()"
+        (pointerdown)="startThemeStudioControlsDrag($event, themeStudioControlsRef)"
+      >
+        Theme Studio
+      </div>
 
-  <!-- Floating voice controls - shown when connected to voice and navigated away from server -->
+      <button
+        type="button"
+        (click)="minimizeThemeStudio()"
+        class="rounded-md border border-border bg-secondary px-3 py-1.5 text-xs font-medium text-foreground transition-colors hover:bg-secondary/80"
+      >
+        Minimize
+      </button>
+
+      <button
+        type="button"
+        (click)="closeThemeStudio()"
+        class="rounded-md border border-border bg-secondary px-3 py-1.5 text-xs font-medium text-foreground transition-colors hover:bg-secondary/80"
+      >
+        Close
+      </button>
+    </div>
+  </div>
+  } @if (isThemeStudioMinimized()) {
+  <div class="pointer-events-none absolute bottom-4 right-4 z-[80]">
+    <div class="pointer-events-auto flex items-center gap-3 rounded-lg border border-border bg-card px-3 py-3 shadow-lg backdrop-blur">
+      <div class="min-w-0">
+        <p class="text-[11px] font-semibold uppercase tracking-[0.18em] text-primary">Theme Studio</p>
+        <p class="mt-1 text-sm font-medium text-foreground">Minimized</p>
+      </div>
+
+      <button
+        type="button"
+        (click)="reopenThemeStudio()"
+        class="rounded-md bg-primary px-3 py-1.5 text-xs font-semibold text-primary-foreground transition-colors hover:bg-primary/90"
+      >
+        Re-open
+      </button>
+
+      <button
+        type="button"
+        (click)="dismissMinimizedThemeStudio()"
+        class="rounded-md border border-border bg-secondary px-3 py-1.5 text-xs font-medium text-foreground transition-colors hover:bg-secondary/80"
+      >
+        Dismiss
+      </button>
+    </div>
+  </div>
+  } @if (!isThemeStudioFullscreen()) {
   <app-floating-voice-controls />
+  }
+  <app-settings-modal />
+  <app-screen-share-source-picker />
+  <app-native-context-menu />
+  <app-debug-console [showLauncher]="false" />
+  <app-theme-picker-overlay />
 </div>
-
-<!-- Unified Settings Modal -->
-<app-settings-modal />
-
-<!-- Shared Screen Share Source Picker -->
-<app-screen-share-source-picker />
-
-<!-- Shared Debug Console -->
-<app-debug-console [showLauncher]="false" />

toju-app/src/app/app.ts

@@ -3,8 +3,12 @@ import {
   Component,
   OnInit,
   OnDestroy,
+  computed,
+  effect,
   inject,
-  HostListener
+  HostListener,
+  signal,
+  Type
 } from '@angular/core';
 import {
   Router,
@@ -13,8 +17,14 @@ import {
 } from '@angular/router';
 import { CommonModule } from '@angular/common';
 import { Store } from '@ngrx/store';
+import { NgIcon, provideIcons } from '@ng-icons/core';
+import { lucideX } from '@ng-icons/lucide';
 
-import { DatabaseService } from './infrastructure/persistence';
+import {
+  DatabaseService,
+  loadGeneralSettingsFromStorage,
+  loadLastViewedChatFromStorage
+} from './infrastructure/persistence';
 import { DesktopAppUpdateService } from './core/services/desktop-app-update.service';
 import { ServerDirectoryFacade } from './domains/server-directory';
 import { NotificationsFacade } from './domains/notifications';
@@ -29,53 +39,182 @@ import { FloatingVoiceControlsComponent } from './domains/voice-session/feature/
 import { SettingsModalComponent } from './features/settings/settings-modal/settings-modal.component';
 import { DebugConsoleComponent } from './shared/components/debug-console/debug-console.component';
 import { ScreenShareSourcePickerComponent } from './shared/components/screen-share-source-picker/screen-share-source-picker.component';
+import { NativeContextMenuComponent } from './features/shell/native-context-menu.component';
 import { UsersActions } from './store/users/users.actions';
 import { RoomsActions } from './store/rooms/rooms.actions';
 import { selectCurrentRoom } from './store/rooms/rooms.selectors';
+import { ROOM_URL_PATTERN, STORAGE_KEY_CURRENT_USER_ID } from './core/constants';
 import {
-  ROOM_URL_PATTERN,
-  STORAGE_KEY_CURRENT_USER_ID,
-  STORAGE_KEY_LAST_VISITED_ROUTE
-} from './core/constants';
+  ThemeNodeDirective,
+  ThemePickerOverlayComponent,
+  ThemeService
+} from './domains/theme';
 
 @Component({
   selector: 'app-root',
   imports: [
     CommonModule,
+    NgIcon,
     RouterOutlet,
     ServersRailComponent,
     TitleBarComponent,
     FloatingVoiceControlsComponent,
     SettingsModalComponent,
     DebugConsoleComponent,
-    ScreenShareSourcePickerComponent
+    ScreenShareSourcePickerComponent,
+    NativeContextMenuComponent,
+    ThemeNodeDirective,
+    ThemePickerOverlayComponent
+  ],
+  viewProviders: [
+    provideIcons({
+      lucideX
+    })
   ],
   templateUrl: './app.html',
   styleUrl: './app.scss'
 })
 export class App implements OnInit, OnDestroy {
+  private static readonly THEME_STUDIO_CONTROLS_MARGIN = 16;
+  private static readonly TITLE_BAR_HEIGHT = 40;
+
   store = inject(Store);
   currentRoom = this.store.selectSignal(selectCurrentRoom);
   desktopUpdates = inject(DesktopAppUpdateService);
   desktopUpdateState = this.desktopUpdates.state;
+  readonly databaseService = inject(DatabaseService);
+  readonly router = inject(Router);
+  readonly servers = inject(ServerDirectoryFacade);
+  readonly notifications = inject(NotificationsFacade);
+  readonly settingsModal = inject(SettingsModalService);
+  readonly timeSync = inject(TimeSyncService);
+  readonly theme = inject(ThemeService);
+  readonly voiceSession = inject(VoiceSessionFacade);
+  readonly externalLinks = inject(ExternalLinkService);
+  readonly electronBridge = inject(ElectronBridgeService);
+  readonly dismissedDesktopUpdateNoticeKey = signal<string | null>(null);
+  readonly themeStudioFullscreenComponent = signal<Type<unknown> | null>(null);
+  readonly themeStudioControlsPosition = signal<{ x: number; y: number } | null>(null);
+  readonly isDraggingThemeStudioControls = signal(false);
+
+  readonly appShellLayoutStyles = computed(() => this.theme.getLayoutContainerStyles('appShell'));
+  readonly serversRailLayoutStyles = computed(() => this.theme.getLayoutItemStyles('serversRail'));
+  readonly appWorkspaceLayoutStyles = computed(() => this.theme.getLayoutItemStyles('appWorkspace'));
+  readonly isThemeStudioFullscreen = computed(() => {
+    return this.settingsModal.isOpen()
+      && this.settingsModal.activePage() === 'theme'
+      && this.settingsModal.themeStudioFullscreen();
+  });
+  readonly isThemeStudioMinimized = computed(() => {
+    return this.settingsModal.activePage() === 'theme'
+      && this.settingsModal.themeStudioMinimized();
+  });
+  readonly desktopUpdateNoticeKey = computed(() => {
+    const updateState = this.desktopUpdateState();
+
+    return updateState.targetVersion?.trim()
+      || updateState.latestVersion?.trim()
+      || `restart:${updateState.currentVersion}`;
+  });
+  readonly showDesktopUpdateNotice = computed(() => {
+    return this.desktopUpdateState().restartRequired
+      && this.dismissedDesktopUpdateNoticeKey() !== this.desktopUpdateNoticeKey();
+  });
+  readonly appWorkspaceShellStyles = computed(() => {
+    const workspaceStyles = this.appWorkspaceLayoutStyles();
+
+    if (!this.isThemeStudioFullscreen()) {
+      return workspaceStyles;
+    }
+
+    return {
+      ...workspaceStyles,
+      gridColumn: '1 / -1',
+      gridRow: '1 / -1'
+    };
+  });
+  readonly themeStudioControlsPositionStyles = computed(() => {
+    const position = this.themeStudioControlsPosition();
+
+    if (!position) {
+      return {
+        right: `${App.THEME_STUDIO_CONTROLS_MARGIN}px`,
+        bottom: `${App.THEME_STUDIO_CONTROLS_MARGIN}px`
+      };
+    }
+
+    return {
+      left: `${position.x}px`,
+      top: `${position.y}px`
+    };
+  });
 
-  private databaseService = inject(DatabaseService);
-  private router = inject(Router);
-  private servers = inject(ServerDirectoryFacade);
-  private notifications = inject(NotificationsFacade);
-  private settingsModal = inject(SettingsModalService);
-  private timeSync = inject(TimeSyncService);
-  private voiceSession = inject(VoiceSessionFacade);
-  private externalLinks = inject(ExternalLinkService);
-  private electronBridge = inject(ElectronBridgeService);
   private deepLinkCleanup: (() => void) | null = null;
+  private themeStudioControlsDragOffset: { x: number; y: number } | null = null;
+  private themeStudioControlsBounds: { width: number; height: number } | null = null;
+
+  constructor() {
+    effect(() => {
+      if (!this.isThemeStudioFullscreen() || this.themeStudioFullscreenComponent()) {
+        return;
+      }
+
+      void import('./domains/theme/feature/settings/theme-settings.component')
+        .then((module) => {
+          this.themeStudioFullscreenComponent.set(module.ThemeSettingsComponent);
+        });
+    });
+
+    effect(() => {
+      if (this.isThemeStudioFullscreen()) {
+        return;
+      }
+
+      this.isDraggingThemeStudioControls.set(false);
+      this.themeStudioControlsDragOffset = null;
+      this.themeStudioControlsBounds = null;
+    });
+  }
 
   @HostListener('document:click', ['$event'])
   onGlobalLinkClick(evt: MouseEvent): void {
     this.externalLinks.handleClick(evt);
   }
 
+  @HostListener('document:keydown', ['$event'])
+  onGlobalKeyDown(evt: KeyboardEvent): void {
+    this.theme.handleGlobalShortcut(evt);
+  }
+
+  @HostListener('document:pointermove', ['$event'])
+  onDocumentPointerMove(event: PointerEvent): void {
+    if (!this.isDraggingThemeStudioControls() || !this.themeStudioControlsDragOffset || !this.themeStudioControlsBounds) {
+      return;
+    }
+
+    this.themeStudioControlsPosition.set(this.clampThemeStudioControlsPosition(
+      event.clientX - this.themeStudioControlsDragOffset.x,
+      event.clientY - this.themeStudioControlsDragOffset.y,
+      this.themeStudioControlsBounds.width,
+      this.themeStudioControlsBounds.height
+    ));
+  }
+
+  @HostListener('document:pointerup')
+  @HostListener('document:pointercancel')
+  onDocumentPointerEnd(): void {
+    if (!this.isDraggingThemeStudioControls()) {
+      return;
+    }
+
+    this.isDraggingThemeStudioControls.set(false);
+    this.themeStudioControlsDragOffset = null;
+    this.themeStudioControlsBounds = null;
+  }
+
   async ngOnInit(): Promise<void> {
+    this.theme.initialize();
+
     void this.desktopUpdates.initialize();
 
     await this.databaseService.initialize();
@@ -105,23 +244,22 @@ export class App implements OnInit, OnDestroy {
         }).catch(() => {});
       }
     } else {
-      const last = localStorage.getItem(STORAGE_KEY_LAST_VISITED_ROUTE);
+      const current = this.router.url;
+      const generalSettings = loadGeneralSettingsFromStorage();
+      const lastViewedChat = loadLastViewedChatFromStorage(currentUserId);
 
-      if (last && typeof last === 'string') {
-        const current = this.router.url;
-
-        if (current === '/' || current === '/search') {
-          this.router.navigate([last], { replaceUrl: true }).catch(() => {});
-        }
+      if (
+        generalSettings.reopenLastViewedChat
+        && lastViewedChat
+        && (current === '/' || current === '/search')
+      ) {
+        this.router.navigate(['/room', lastViewedChat.roomId], { replaceUrl: true }).catch(() => {});
       }
     }
 
     this.router.events.subscribe((evt) => {
       if (evt instanceof NavigationEnd) {
         const url = evt.urlAfterRedirects || evt.url;
-
-        localStorage.setItem(STORAGE_KEY_LAST_VISITED_ROUTE, url);
-
         const roomMatch = url.match(ROOM_URL_PATTERN);
         const currentRoomId = roomMatch ? roomMatch[1] : null;
 
@@ -143,6 +281,56 @@ export class App implements OnInit, OnDestroy {
     this.settingsModal.open('updates');
   }
 
+  dismissDesktopUpdateNotice(): void {
+    if (!this.desktopUpdateState().restartRequired) {
+      return;
+    }
+
+    this.dismissedDesktopUpdateNoticeKey.set(this.desktopUpdateNoticeKey());
+  }
+
+  startThemeStudioControlsDrag(event: PointerEvent, controlsElement: HTMLElement): void {
+    if (event.button !== 0) {
+      return;
+    }
+
+    const rect = controlsElement.getBoundingClientRect();
+
+    this.themeStudioControlsBounds = {
+      width: rect.width,
+      height: rect.height
+    };
+
+    this.themeStudioControlsDragOffset = {
+      x: event.clientX - rect.left,
+      y: event.clientY - rect.top
+    };
+
+    this.themeStudioControlsPosition.set({
+      x: rect.left,
+      y: rect.top
+    });
+
+    this.isDraggingThemeStudioControls.set(true);
+    event.preventDefault();
+  }
+
+  reopenThemeStudio(): void {
+    this.settingsModal.restoreMinimizedThemeStudio();
+  }
+
+  minimizeThemeStudio(): void {
+    this.settingsModal.minimizeThemeStudio();
+  }
+
+  dismissMinimizedThemeStudio(): void {
+    this.settingsModal.dismissMinimizedThemeStudio();
+  }
+
+  closeThemeStudio(): void {
+    this.settingsModal.close();
+  }
+
   async refreshDesktopUpdateContext(): Promise<void> {
     await this.desktopUpdates.refreshServerContext();
   }
@@ -151,6 +339,18 @@ export class App implements OnInit, OnDestroy {
     await this.desktopUpdates.restartToApplyUpdate();
   }
 
+  private clampThemeStudioControlsPosition(left: number, top: number, width: number, height: number): { x: number; y: number } {
+    const minX = App.THEME_STUDIO_CONTROLS_MARGIN;
+    const minY = App.TITLE_BAR_HEIGHT + App.THEME_STUDIO_CONTROLS_MARGIN;
+    const maxX = Math.max(minX, window.innerWidth - width - App.THEME_STUDIO_CONTROLS_MARGIN);
+    const maxY = Math.max(minY, window.innerHeight - height - App.THEME_STUDIO_CONTROLS_MARGIN);
+
+    return {
+      x: Math.min(Math.max(minX, left), maxX),
+      y: Math.min(Math.max(minY, top), maxY)
+    };
+  }
+
   private async setupDesktopDeepLinks(): Promise<void> {
     const electronApi = this.electronBridge.getApi();
 

toju-app/src/app/core/constants.ts

@@ -1,14 +1,18 @@
 export const STORAGE_KEY_CURRENT_USER_ID = 'metoyou_currentUserId';
-export const STORAGE_KEY_LAST_VISITED_ROUTE = 'metoyou_lastVisitedRoute';
+export const STORAGE_KEY_GENERAL_SETTINGS = 'metoyou_general_settings';
+export const STORAGE_KEY_LAST_VIEWED_CHAT = 'metoyou_lastViewedChat';
 export const STORAGE_KEY_CONNECTION_SETTINGS = 'metoyou_connection_settings';
 export const STORAGE_KEY_NOTIFICATION_SETTINGS = 'metoyou_notification_settings';
 export const STORAGE_KEY_VOICE_SETTINGS = 'metoyou_voice_settings';
 export const STORAGE_KEY_DEBUGGING_SETTINGS = 'metoyou_debugging_settings';
+export const STORAGE_KEY_THEME_ACTIVE = 'metoyou_theme_active';
+export const STORAGE_KEY_THEME_DRAFT = 'metoyou_theme_draft';
 export const STORAGE_KEY_USER_VOLUMES = 'metoyou_user_volumes';
 export const ROOM_URL_PATTERN = /\/room\/([^/]+)/;
 export const STORE_DEVTOOLS_MAX_AGE = 25;
-export const DEBUG_LOG_MAX_ENTRIES = 500;
+export const DEBUG_LOG_MAX_ENTRIES = 5000;
 export const DEFAULT_MAX_USERS = 50;
 export const DEFAULT_AUDIO_BITRATE_KBPS = 96;
 export const DEFAULT_VOLUME = 100;
 export const SEARCH_DEBOUNCE_MS = 300;
+export const RECONNECT_SOUND_GRACE_MS = 15_000;

toju-app/src/app/core/platform/electron/electron-api.models.ts

@@ -118,6 +118,12 @@ export interface WindowStateSnapshot {
   isMinimized: boolean;
 }
 
+export interface SavedThemeFileDescriptor {
+  fileName: string;
+  modifiedAt: number;
+  path: string;
+}
+
 export interface ElectronCommand {
   type: string;
   payload: unknown;
@@ -128,6 +134,22 @@ export interface ElectronQuery {
   payload: unknown;
 }
 
+export interface ContextMenuParams {
+  posX: number;
+  posY: number;
+  isEditable: boolean;
+  selectionText: string;
+  linkURL: string;
+  mediaType: string;
+  srcURL: string;
+  editFlags: {
+    canCut: boolean;
+    canCopy: boolean;
+    canPaste: boolean;
+    canSelectAll: boolean;
+  };
+}
+
 export interface ElectronApi {
   linuxDisplayServer: string;
   minimizeWindow: () => void;
@@ -143,6 +165,11 @@ export interface ElectronApi {
   onLinuxScreenShareMonitorAudioChunk: (listener: (payload: LinuxScreenShareMonitorAudioChunkPayload) => void) => () => void;
   onLinuxScreenShareMonitorAudioEnded: (listener: (payload: LinuxScreenShareMonitorAudioEndedPayload) => void) => () => void;
   getAppDataPath: () => Promise<string>;
+  getSavedThemesPath: () => Promise<string>;
+  listSavedThemes: () => Promise<SavedThemeFileDescriptor[]>;
+  readSavedTheme: (fileName: string) => Promise<string>;
+  writeSavedTheme: (fileName: string, text: string) => Promise<boolean>;
+  deleteSavedTheme: (fileName: string) => Promise<boolean>;
   consumePendingDeepLink: () => Promise<string | null>;
   getDesktopSettings: () => Promise<DesktopSettingsSnapshot>;
   showDesktopNotification: (payload: DesktopNotificationPayload) => Promise<boolean>;
@@ -165,6 +192,8 @@ export interface ElectronApi {
   fileExists: (filePath: string) => Promise<boolean>;
   deleteFile: (filePath: string) => Promise<boolean>;
   ensureDir: (dirPath: string) => Promise<boolean>;
+  onContextMenu: (listener: (params: ContextMenuParams) => void) => () => void;
+  copyImageToClipboard: (srcURL: string) => Promise<boolean>;
   command: <T = unknown>(command: ElectronCommand) => Promise<T>;
   query: <T = unknown>(query: ElectronQuery) => Promise<T>;
 }

toju-app/src/app/core/services/debugging/debugging-network-snapshot.builder.ts

@@ -302,7 +302,9 @@ class DebugNetworkSnapshotBuilder {
       case 'offer':
       case 'answer':
       case 'ice_candidate': {
-        const peerId = this.getPayloadString(payload, 'targetPeerId') ?? this.getPayloadString(payload, 'fromUserId');
+        const peerId = direction === 'outbound'
+          ? (this.getPayloadString(payload, 'targetPeerId') ?? this.getPayloadString(payload, 'fromUserId'))
+          : (this.getPayloadString(payload, 'fromUserId') ?? this.getPayloadString(payload, 'targetPeerId'));
         const displayName = this.getPayloadString(payload, 'displayName');
 
         if (!peerId)
@@ -1295,7 +1297,7 @@ class DebugNetworkSnapshotBuilder {
   private getPayloadString(payload: Record<string, unknown> | null, key: string): string | null {
     const value = this.getPayloadField(payload, key);
 
-    return typeof value === 'string' ? value : null;
+    return this.normalizeStringValue(value);
   }
 
   private getPayloadNumber(payload: Record<string, unknown> | null, key: string): number | null {
@@ -1323,7 +1325,7 @@ class DebugNetworkSnapshotBuilder {
   private getStringProperty(record: Record<string, unknown> | null, key: string): string | null {
     const value = record?.[key];
 
-    return typeof value === 'string' ? value : null;
+    return this.normalizeStringValue(value);
   }
 
   private getBooleanProperty(record: Record<string, unknown> | null, key: string): boolean | null {
@@ -1344,4 +1346,16 @@ class DebugNetworkSnapshotBuilder {
 
     return value as Record<string, unknown>;
   }
+
+  private normalizeStringValue(value: unknown): string | null {
+    if (typeof value !== 'string')
+      return null;
+
+    const normalized = value.trim();
+
+    if (!normalized || normalized === 'undefined' || normalized === 'null')
+      return null;
+
+    return normalized;
+  }
 }

toju-app/src/app/core/services/settings-modal.service.ts

@@ -2,6 +2,7 @@ import { Injectable, signal } from '@angular/core';
 
 export type SettingsPage =
   | 'general'
+  | 'theme'
   | 'network'
   | 'notifications'
   | 'voice'
@@ -17,18 +18,59 @@ export class SettingsModalService {
   readonly isOpen = signal(false);
   readonly activePage = signal<SettingsPage>('general');
   readonly targetServerId = signal<string | null>(null);
+  readonly themeStudioFullscreen = signal(false);
+  readonly themeStudioMinimized = signal(false);
 
   open(page: SettingsPage = 'general', serverId?: string): void {
+    this.themeStudioFullscreen.set(false);
+    this.themeStudioMinimized.set(false);
     this.activePage.set(page);
     this.targetServerId.set(serverId ?? null);
     this.isOpen.set(true);
   }
 
   close(): void {
+    this.themeStudioFullscreen.set(false);
+    this.themeStudioMinimized.set(false);
     this.isOpen.set(false);
   }
 
   navigate(page: SettingsPage): void {
     this.activePage.set(page);
+
+    if (page !== 'theme') {
+      this.themeStudioFullscreen.set(false);
+      this.themeStudioMinimized.set(false);
+    }
+  }
+
+  setThemeStudioFullscreen(isFullscreen: boolean): void {
+    this.themeStudioFullscreen.set(isFullscreen);
+  }
+
+  toggleThemeStudioFullscreen(): void {
+    this.themeStudioFullscreen.update((isFullscreen) => !isFullscreen);
+  }
+
+  openThemeStudio(): void {
+    this.activePage.set('theme');
+    this.themeStudioMinimized.set(false);
+    this.isOpen.set(true);
+    this.themeStudioFullscreen.set(true);
+  }
+
+  minimizeThemeStudio(): void {
+    this.activePage.set('theme');
+    this.themeStudioFullscreen.set(false);
+    this.themeStudioMinimized.set(true);
+    this.isOpen.set(false);
+  }
+
+  restoreMinimizedThemeStudio(): void {
+    this.openThemeStudio();
+  }
+
+  dismissMinimizedThemeStudio(): void {
+    this.themeStudioMinimized.set(false);
   }
 }

toju-app/src/app/domains/README.md

@@ -6,22 +6,25 @@ infrastructure adapters and UI.
 
 ## Quick reference
 
-| Domain | Purpose | Public entry point |
-|---|---|---|
-| **attachment** | File upload/download, chunk transfer, persistence | `AttachmentFacade` |
-| **auth** | Login / register HTTP orchestration, user-bar UI | `AuthService` |
-| **chat** | Messaging rules, sync logic, GIF/Klipy integration, chat UI | `KlipyService`, `canEditMessage()`, `ChatMessagesComponent` |
-| **notifications** | Notification preferences, unread tracking, desktop alert orchestration | `NotificationsFacade` |
-| **screen-share** | Source picker, quality presets | `ScreenShareFacade` |
-| **server-directory** | Multi-server endpoint management, health checks, invites, server search UI | `ServerDirectoryFacade` |
-| **voice-connection** | Voice activity detection, bitrate profiles, in-channel camera transport | `VoiceConnectionFacade` |
-| **voice-session** | Join/leave orchestration, voice settings persistence | `VoiceSessionFacade` |
+| Domain               | Purpose                                                                                                            | Public entry point                                          |
+| -------------------- | ------------------------------------------------------------------------------------------------------------------ | ----------------------------------------------------------- |
+| **attachment**       | File upload/download, chunk transfer, persistence                                                                  | `AttachmentFacade`                                          |
+| **access-control**   | Role, permission, moderation, and room access rules                                                                | `normalizeRoomAccessControl()`, `resolveRoomPermission()`   |
+| **auth**             | Login / register HTTP orchestration, user-bar UI                                                                   | `AuthService`                                               |
+| **chat**             | Messaging rules, sync logic, GIF/Klipy integration, chat UI                                                        | `KlipyService`, `canEditMessage()`, `ChatMessagesComponent` |
+| **notifications**    | Notification preferences, unread tracking, desktop alert orchestration                                             | `NotificationsFacade`                                       |
+| **screen-share**     | Source picker, quality presets                                                                                     | `ScreenShareFacade`                                         |
+| **server-directory** | Multi-server endpoint management, health checks, invites, server search UI                                         | `ServerDirectoryFacade`                                     |
+| **theme**            | JSON-driven theming, element registry, layout syncing, picker tooling, and Electron saved-theme library management | `ThemeService`                                              |
+| **voice-connection** | Voice activity detection, bitrate profiles, in-channel camera transport                                            | `VoiceConnectionFacade`                                     |
+| **voice-session**    | Join/leave orchestration, voice settings persistence                                                               | `VoiceSessionFacade`                                        |
 
 ## Detailed docs
 
 The larger domains also keep longer design notes in their own folders:
 
 - [attachment/README.md](attachment/README.md)
+- [access-control/README.md](access-control/README.md)
 - [auth/README.md](auth/README.md)
 - [chat/README.md](chat/README.md)
 - [notifications/README.md](notifications/README.md)
@@ -65,12 +68,12 @@ domains/<name>/
 
 ## Where do I put new code?
 
-| I want to… | Put it in… |
-|---|---|
-| Add a new business concept | New folder under `domains/` following the convention above |
-| Add a type used by multiple domains | `shared-kernel/` with a descriptive file name |
-| Add a UI component for a domain feature | `domains/<name>/feature/` or `domains/<name>/ui/` |
-| Add a settings subpanel | `domains/<name>/feature/settings/` |
-| Add a top-level page or shell component | `features/` |
-| Add persistence logic | `infrastructure/persistence/` or `domains/<name>/infrastructure/` |
-| Add realtime/WebRTC logic | `infrastructure/realtime/` |
+| I want to…                              | Put it in…                                                        |
+| --------------------------------------- | ----------------------------------------------------------------- |
+| Add a new business concept              | New folder under `domains/` following the convention above        |
+| Add a type used by multiple domains     | `shared-kernel/` with a descriptive file name                     |
+| Add a UI component for a domain feature | `domains/<name>/feature/` or `domains/<name>/ui/`                 |
+| Add a settings subpanel                 | `domains/<name>/feature/settings/`                                |
+| Add a top-level page or shell component | `features/`                                                       |
+| Add persistence logic                   | `infrastructure/persistence/` or `domains/<name>/infrastructure/` |
+| Add realtime/WebRTC logic               | `infrastructure/realtime/`                                        |

toju-app/src/app/domains/access-control/README.md

@@ -0,0 +1,37 @@
+# Access Control Domain
+
+Role and permission rules for servers, including default system roles, role assignment normalization, permission resolution, legacy compatibility mapping, and room-level access-control hydration.
+
+## Module map
+
+```
+access-control/
+├── domain/
+│   ├── access-control.models.ts            MemberIdentity and RoomPermissionDefinition domain types
+│   ├── access-control.constants.ts         SYSTEM_ROLE_IDS and permission metadata
+│   ├── role.rules.ts                       Role defaults, normalization, ordering, create/update helpers
+│   ├── role-assignment.rules.ts            Assignment normalization and member-role lookups
+│   ├── permission.rules.ts                 Permission resolution and moderation hierarchy checks
+│   ├── room.rules.ts                       Legacy compatibility, room hydration, room-level normalization
+│   └── access-control.logic.ts             Public barrel for domain rules
+│
+└── index.ts                                Domain barrel used by other layers
+```
+
+## Domain rules
+
+| Function                                                        | Purpose                                                                                                       |
+| --------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------- |
+| `normalizeRoomRoles(room.roles, room.permissions)`              | Repairs missing/default roles and keeps role ordering stable                                                  |
+| `normalizeRoomRoleAssignments(...)`                             | Deduplicates and backfills member role assignments from legacy member role fields                             |
+| `normalizeChannelPermissionOverrides(...)`                      | Deduplicates valid channel overrides and drops invalid references                                             |
+| `resolveRoomPermission(room, identity, permission, channelId?)` | Resolves effective permission state including overrides                                                       |
+| `canManageMember(...)`                                          | Applies both permission checks and role hierarchy checks                                                      |
+| `canManageRole(...)`                                            | Prevents editing roles at or above the actor's highest role                                                   |
+| `normalizeRoomAccessControl(room)`                              | Produces a fully hydrated room with normalized roles, assignments, overrides, and legacy compatibility fields |
+
+## Layering
+
+- Domain rules stay pure and only depend on `shared-kernel` contracts plus other files in this domain.
+- Renderer shells and NgRx effects should keep importing from `src/app/domains/access-control/` instead of internal files.
+- Legacy `room.permissions` booleans remain compatibility output only; normalized data lives on `roles`, `roleAssignments`, `channelPermissions`, and `slowModeInterval`.

toju-app/src/app/domains/access-control/domain/access-control.constants.ts

@@ -0,0 +1,65 @@
+import type { RoomPermissionDefinition } from './access-control.models';
+
+export const SYSTEM_ROLE_IDS = {
+  everyone: 'system-everyone',
+  moderator: 'system-moderator',
+  admin: 'system-admin'
+} as const;
+
+export const ROOM_PERMISSION_DEFINITIONS: RoomPermissionDefinition[] = [
+  {
+    key: 'manageServer',
+    label: 'Manage Server',
+    description: 'Edit server settings such as name, privacy, and limits.'
+  },
+  {
+    key: 'manageRoles',
+    label: 'Manage Roles',
+    description: 'Create, edit, reorder, and assign roles.'
+  },
+  {
+    key: 'manageChannels',
+    label: 'Manage Channels',
+    description: 'Create, rename, delete, and reorder channels.'
+  },
+  {
+    key: 'manageIcon',
+    label: 'Manage Icon',
+    description: 'Change the server icon for all members.'
+  },
+  {
+    key: 'kickMembers',
+    label: 'Kick Members',
+    description: 'Remove members from the server without banning them.'
+  },
+  {
+    key: 'banMembers',
+    label: 'Ban Members',
+    description: 'Ban members from the server.'
+  },
+  {
+    key: 'manageBans',
+    label: 'Manage Bans',
+    description: 'Review and revoke existing bans.'
+  },
+  {
+    key: 'deleteMessages',
+    label: 'Delete Messages',
+    description: 'Delete messages sent by other members.'
+  },
+  {
+    key: 'joinVoice',
+    label: 'Join Voice',
+    description: 'Join voice channels.'
+  },
+  {
+    key: 'shareScreen',
+    label: 'Share Screen',
+    description: 'Start screen sharing in voice channels.'
+  },
+  {
+    key: 'uploadFiles',
+    label: 'Upload Files',
+    description: 'Upload attachments in chat.'
+  }
+];

toju-app/src/app/domains/access-control/domain/access-control.internal.ts

@@ -0,0 +1,117 @@
+import {
+  PermissionState,
+  RoomPermissionKey,
+  RoomPermissionMatrix,
+  RoomRole,
+  RoomRoleAssignment,
+  ROOM_PERMISSION_KEYS
+} from '../../../shared-kernel';
+import type { MemberIdentity } from './access-control.models';
+
+export function normalizeName(name: string): string {
+  return name.trim().replace(/\s+/g, ' ');
+}
+
+export function compareText(firstValue: string, secondValue: string): number {
+  return firstValue.localeCompare(secondValue, undefined, { sensitivity: 'base' });
+}
+
+export function uniqueStrings(values: readonly string[]): string[] {
+  return Array.from(new Set(values.filter((value) => typeof value === 'string' && value.trim().length > 0).map((value) => value.trim())));
+}
+
+export function normalizePermissionState(value: unknown): PermissionState {
+  return value === 'allow' || value === 'deny' || value === 'inherit' ? value : 'inherit';
+}
+
+export function normalizePermissionMatrix(matrix: RoomPermissionMatrix | undefined): RoomPermissionMatrix {
+  const normalized: RoomPermissionMatrix = {};
+
+  for (const key of ROOM_PERMISSION_KEYS) {
+    const value = normalizePermissionState(matrix?.[key]);
+
+    if (value !== 'inherit') {
+      normalized[key] = value;
+    }
+  }
+
+  return normalized;
+}
+
+export function memberIdentityKey(identity: MemberIdentity | null | undefined): string {
+  return identity?.oderId?.trim() || identity?.id?.trim() || '';
+}
+
+export function matchesIdentity(identity: MemberIdentity | null | undefined, candidate: Pick<RoomRoleAssignment, 'userId' | 'oderId'>): boolean {
+  if (!identity) {
+    return false;
+  }
+
+  return !!(
+    (identity.id && (candidate.userId === identity.id || candidate.oderId === identity.id)) ||
+    (identity.oderId && (candidate.userId === identity.oderId || candidate.oderId === identity.oderId))
+  );
+}
+
+export function roleSortAscending(firstRole: RoomRole, secondRole: RoomRole): number {
+  if (firstRole.position !== secondRole.position) {
+    return firstRole.position - secondRole.position;
+  }
+
+  return compareText(firstRole.name, secondRole.name);
+}
+
+export function roleSortDescending(firstRole: RoomRole, secondRole: RoomRole): number {
+  return roleSortAscending(secondRole, firstRole);
+}
+
+export function permissionStateToBoolean(value: PermissionState | undefined, fallbackValue: boolean): boolean {
+  if (value === 'allow') {
+    return true;
+  }
+
+  if (value === 'deny') {
+    return false;
+  }
+
+  return fallbackValue;
+}
+
+export function getRolePermissionState(role: RoomRole | undefined, permission: RoomPermissionKey): PermissionState {
+  return normalizePermissionState(role?.permissions?.[permission]);
+}
+
+export function buildSystemRole(id: string, name: string, position: number, permissions: RoomPermissionMatrix, color: string): RoomRole {
+  return {
+    id,
+    name,
+    position,
+    color,
+    isSystem: true,
+    permissions: normalizePermissionMatrix(permissions)
+  };
+}
+
+export function buildRoleLookup(roles: readonly RoomRole[]): Map<string, RoomRole> {
+  return new Map(roles.map((role) => [role.id, role]));
+}
+
+export function nextRolePosition(roles: readonly RoomRole[]): number {
+  if (roles.length === 0) {
+    return 100;
+  }
+
+  return Math.max(...roles.map((role) => role.position)) + 100;
+}
+
+export function resolveLegacyAllowState(
+  value: boolean | undefined,
+  currentState: PermissionState | undefined,
+  disabledState: Exclude<PermissionState, 'allow'>
+): PermissionState | undefined {
+  if (value === undefined) {
+    return currentState;
+  }
+
+  return value ? 'allow' : disabledState;
+}

toju-app/src/app/domains/access-control/domain/access-control.logic.ts

@@ -0,0 +1,6 @@
+export * from './access-control.models';
+export * from './access-control.constants';
+export * from './role.rules';
+export * from './role-assignment.rules';
+export * from './permission.rules';
+export * from './room.rules';

toju-app/src/app/domains/access-control/domain/access-control.models.ts

@@ -0,0 +1,13 @@
+import type {
+  RoomMember,
+  RoomPermissionKey,
+  User
+} from '../../../shared-kernel';
+
+export interface RoomPermissionDefinition {
+  key: RoomPermissionKey;
+  label: string;
+  description: string;
+}
+
+export type MemberIdentity = Pick<RoomMember, 'id' | 'oderId'> | Pick<User, 'id' | 'oderId'> | { id?: string; oderId?: string };

toju-app/src/app/domains/access-control/domain/permission.rules.ts

@@ -0,0 +1,248 @@
+import {
+  ChannelPermissionOverride,
+  PermissionState,
+  Room,
+  RoomPermissionKey,
+  RoomRole
+} from '../../../shared-kernel';
+import { SYSTEM_ROLE_IDS } from './access-control.constants';
+import type { MemberIdentity } from './access-control.models';
+import {
+  buildRoleLookup,
+  getRolePermissionState,
+  matchesIdentity,
+  normalizePermissionState,
+  roleSortAscending,
+  compareText
+} from './access-control.internal';
+import { getAssignedRoleIds, getHighestAssignedRole } from './role-assignment.rules';
+import { getRoomRoleById, normalizeRoomRoles } from './role.rules';
+
+function resolveRolePermissionState(roles: readonly RoomRole[], assignedRoleIds: readonly string[], permission: RoomPermissionKey): PermissionState {
+  const roleLookup = buildRoleLookup(roles);
+  const assignedRoles = assignedRoleIds.map((roleId) => roleLookup.get(roleId)).filter((role): role is RoomRole => !!role);
+  const effectiveRoles = [roleLookup.get(SYSTEM_ROLE_IDS.everyone), ...assignedRoles]
+    .filter((role): role is RoomRole => !!role)
+    .sort(roleSortAscending);
+
+  let state: PermissionState = 'inherit';
+
+  for (const role of effectiveRoles) {
+    const nextState = getRolePermissionState(role, permission);
+
+    if (nextState !== 'inherit') {
+      state = nextState;
+    }
+  }
+
+  return state;
+}
+
+function resolveChannelOverrideState(
+  overrides: readonly ChannelPermissionOverride[],
+  roles: readonly RoomRole[],
+  assignedRoleIds: readonly string[],
+  identity: MemberIdentity,
+  channelId: string,
+  permission: RoomPermissionKey,
+  baseState: PermissionState
+): PermissionState {
+  const roleLookup = buildRoleLookup(roles);
+
+  let state = baseState;
+
+  const everyoneOverride = overrides.find(
+    (override) =>
+      override.channelId === channelId &&
+      override.targetType === 'role' &&
+      override.targetId === SYSTEM_ROLE_IDS.everyone &&
+      override.permission === permission
+  );
+
+  if (everyoneOverride?.value && everyoneOverride.value !== 'inherit') {
+    state = everyoneOverride.value;
+  }
+
+  const orderedAssignedRoles = assignedRoleIds
+    .map((roleId) => roleLookup.get(roleId))
+    .filter((role): role is RoomRole => !!role)
+    .sort(roleSortAscending);
+
+  for (const role of orderedAssignedRoles) {
+    const override = overrides.find(
+      (candidateOverride) =>
+        candidateOverride.channelId === channelId &&
+        candidateOverride.targetType === 'role' &&
+        candidateOverride.targetId === role.id &&
+        candidateOverride.permission === permission
+    );
+
+    if (override?.value && override.value !== 'inherit') {
+      state = override.value;
+    }
+  }
+
+  const userOverride = overrides.find(
+    (override) =>
+      override.channelId === channelId &&
+      override.targetType === 'user' &&
+      override.permission === permission &&
+      (override.targetId === identity.id || override.targetId === identity.oderId)
+  );
+
+  if (userOverride?.value && userOverride.value !== 'inherit') {
+    state = userOverride.value;
+  }
+
+  return state;
+}
+
+export function normalizeChannelPermissionOverrides(
+  overrides: readonly ChannelPermissionOverride[] | undefined,
+  roles: readonly RoomRole[]
+): ChannelPermissionOverride[] {
+  const validRoleIds = new Set(roles.map((role) => role.id));
+  const normalizedByKey = new Map<string, ChannelPermissionOverride>();
+
+  for (const override of overrides ?? []) {
+    if (!override || typeof override !== 'object') {
+      continue;
+    }
+
+    const channelId = typeof override.channelId === 'string' ? override.channelId.trim() : '';
+    const targetId = typeof override.targetId === 'string' ? override.targetId.trim() : '';
+    const targetType = override.targetType === 'role' || override.targetType === 'user' ? override.targetType : null;
+    const permission = override.permission;
+    const value = normalizePermissionState(override.value);
+
+    if (!channelId || !targetId || !targetType || !permission || value === 'inherit') {
+      continue;
+    }
+
+    if (targetType === 'role' && !validRoleIds.has(targetId)) {
+      continue;
+    }
+
+    normalizedByKey.set(`${channelId}:${targetType}:${targetId}:${permission}`, {
+      channelId,
+      targetType,
+      targetId,
+      permission,
+      value
+    });
+  }
+
+  return Array.from(normalizedByKey.values()).sort((firstOverride, secondOverride) => {
+    const channelCompare = compareText(firstOverride.channelId, secondOverride.channelId);
+
+    if (channelCompare !== 0) {
+      return channelCompare;
+    }
+
+    if (firstOverride.targetType !== secondOverride.targetType) {
+      return compareText(firstOverride.targetType, secondOverride.targetType);
+    }
+
+    const targetCompare = compareText(firstOverride.targetId, secondOverride.targetId);
+
+    if (targetCompare !== 0) {
+      return targetCompare;
+    }
+
+    return compareText(firstOverride.permission, secondOverride.permission);
+  });
+}
+
+export function resolveRoomPermission(
+  room: Room,
+  identity: MemberIdentity | null | undefined,
+  permission: RoomPermissionKey,
+  channelId?: string
+): boolean {
+  if (!identity) {
+    return false;
+  }
+
+  if (room.hostId === identity.id || room.hostId === identity.oderId) {
+    return true;
+  }
+
+  const roles = normalizeRoomRoles(room.roles, room.permissions);
+  const assignedRoleIds = getAssignedRoleIds(room.roleAssignments, identity);
+  const roleState = resolveRolePermissionState(roles, assignedRoleIds, permission);
+  const channelState = channelId
+    ? resolveChannelOverrideState(
+      normalizeChannelPermissionOverrides(room.channelPermissions, roles),
+      roles,
+      assignedRoleIds,
+      identity,
+      channelId,
+      permission,
+      roleState
+    )
+    : roleState;
+
+  return channelState === 'allow';
+}
+
+export function canManageMember(
+  room: Room,
+  actor: MemberIdentity | null | undefined,
+  target: MemberIdentity | null | undefined,
+  permission: 'kickMembers' | 'banMembers' | 'manageRoles'
+): boolean {
+  if (!actor || !target) {
+    return false;
+  }
+
+  const isActorOwner = room.hostId === actor.id || room.hostId === actor.oderId;
+  const isTargetOwner = room.hostId === target.id || room.hostId === target.oderId;
+  const isSameIdentity = matchesIdentity(actor, {
+    userId: target.id || target.oderId || '',
+    oderId: target.oderId
+  });
+
+  if (isSameIdentity) {
+    return false;
+  }
+
+  if (isTargetOwner && !isActorOwner) {
+    return false;
+  }
+
+  if (isActorOwner) {
+    return true;
+  }
+
+  if (!resolveRoomPermission(room, actor, permission)) {
+    return false;
+  }
+
+  const actorRole = getHighestAssignedRole(room, actor);
+  const targetRole = getHighestAssignedRole(room, target);
+
+  return (actorRole?.position ?? 0) > (targetRole?.position ?? 0);
+}
+
+export function canManageRole(room: Room, actor: MemberIdentity | null | undefined, roleId: string): boolean {
+  if (!actor || !roleId) {
+    return false;
+  }
+
+  if (room.hostId === actor.id || room.hostId === actor.oderId) {
+    return true;
+  }
+
+  if (!resolveRoomPermission(room, actor, 'manageRoles')) {
+    return false;
+  }
+
+  const targetRole = getRoomRoleById(normalizeRoomRoles(room.roles, room.permissions), roleId);
+  const actorRole = getHighestAssignedRole(room, actor);
+
+  if (!targetRole) {
+    return false;
+  }
+
+  return (actorRole?.position ?? 0) > targetRole.position;
+}

toju-app/src/app/domains/access-control/domain/role-assignment.rules.ts

@@ -0,0 +1,201 @@
+import {
+  Room,
+  RoomMember,
+  RoomRole,
+  RoomRoleAssignment
+} from '../../../shared-kernel';
+import { SYSTEM_ROLE_IDS } from './access-control.constants';
+import type { MemberIdentity } from './access-control.models';
+import {
+  buildRoleLookup,
+  compareText,
+  memberIdentityKey,
+  matchesIdentity,
+  roleSortDescending,
+  uniqueStrings
+} from './access-control.internal';
+import { getRoomRoleById, normalizeRoomRoles } from './role.rules';
+
+function sortAssignments(assignments: readonly RoomRoleAssignment[]): RoomRoleAssignment[] {
+  return [...assignments].sort((firstAssignment, secondAssignment) =>
+    compareText(firstAssignment.oderId || firstAssignment.userId, secondAssignment.oderId || secondAssignment.userId)
+  );
+}
+
+function resolveLegacyMemberRoleIds(member: RoomMember, validRoleIds: Set<string>): string[] {
+  if (Array.isArray(member.roleIds) && member.roleIds.length > 0) {
+    return uniqueStrings(member.roleIds).filter((roleId) => validRoleIds.has(roleId));
+  }
+
+  if (member.role === 'admin') {
+    return [SYSTEM_ROLE_IDS.admin];
+  }
+
+  if (member.role === 'moderator') {
+    return [SYSTEM_ROLE_IDS.moderator];
+  }
+
+  return [];
+}
+
+export function normalizeRoomRoleAssignments(
+  assignments: readonly RoomRoleAssignment[] | undefined,
+  members: readonly RoomMember[] | undefined,
+  roles: readonly RoomRole[]
+): RoomRoleAssignment[] {
+  const validRoleIds = new Set(roles.map((role) => role.id).filter((roleId) => roleId !== SYSTEM_ROLE_IDS.everyone));
+  const normalizedByUserKey = new Map<string, RoomRoleAssignment>();
+
+  for (const assignment of assignments ?? []) {
+    if (!assignment || typeof assignment !== 'object') {
+      continue;
+    }
+
+    const userId = typeof assignment.userId === 'string' ? assignment.userId.trim() : '';
+    const oderId = typeof assignment.oderId === 'string' ? assignment.oderId.trim() : undefined;
+    const key = oderId || userId;
+
+    if (!key) {
+      continue;
+    }
+
+    const roleIds = uniqueStrings(assignment.roleIds ?? []).filter((roleId) => validRoleIds.has(roleId));
+
+    if (roleIds.length === 0) {
+      continue;
+    }
+
+    normalizedByUserKey.set(key, {
+      userId: userId || key,
+      oderId,
+      roleIds
+    });
+  }
+
+  if (normalizedByUserKey.size > 0) {
+    return sortAssignments(Array.from(normalizedByUserKey.values()));
+  }
+
+  for (const member of members ?? []) {
+    const key = memberIdentityKey(member);
+
+    if (!key) {
+      continue;
+    }
+
+    const roleIds = resolveLegacyMemberRoleIds(member, validRoleIds);
+
+    if (roleIds.length === 0) {
+      continue;
+    }
+
+    normalizedByUserKey.set(key, {
+      userId: member.id || key,
+      oderId: member.oderId || undefined,
+      roleIds
+    });
+  }
+
+  return sortAssignments(Array.from(normalizedByUserKey.values()));
+}
+
+export function getAssignedRoleIds(assignments: readonly RoomRoleAssignment[] | undefined, identity: MemberIdentity | null | undefined): string[] {
+  const assignment = (assignments ?? []).find((candidateAssignment) => matchesIdentity(identity, candidateAssignment));
+
+  return uniqueStrings(assignment?.roleIds ?? []);
+}
+
+export function getDisplayRoleName(room: Room, member: MemberIdentity | null | undefined): string {
+  if (!member) {
+    return 'Member';
+  }
+
+  if (room.hostId === member.id || room.hostId === member.oderId) {
+    return 'Owner';
+  }
+
+  const roles = normalizeRoomRoles(room.roles, room.permissions);
+  const roleLookup = buildRoleLookup(roles);
+  const assignedRoles = getAssignedRoleIds(room.roleAssignments, member)
+    .map((roleId) => roleLookup.get(roleId))
+    .filter((role): role is RoomRole => !!role)
+    .sort(roleSortDescending);
+
+  return assignedRoles[0]?.name || '@everyone';
+}
+
+export function getAssignedRoles(room: Room, identity: MemberIdentity | null | undefined): RoomRole[] {
+  const roles = normalizeRoomRoles(room.roles, room.permissions);
+  const roleLookup = buildRoleLookup(roles);
+
+  return getAssignedRoleIds(room.roleAssignments, identity)
+    .map((roleId) => roleLookup.get(roleId))
+    .filter((role): role is RoomRole => !!role)
+    .sort(roleSortDescending);
+}
+
+export function getHighestAssignedRole(room: Room, identity: MemberIdentity | null | undefined): RoomRole | null {
+  if (!identity) {
+    return null;
+  }
+
+  if (room.hostId === identity.id || room.hostId === identity.oderId) {
+    return null;
+  }
+
+  return getAssignedRoles(room, identity)[0] ?? getRoomRoleById(normalizeRoomRoles(room.roles, room.permissions), SYSTEM_ROLE_IDS.everyone) ?? null;
+}
+
+export function setRoleAssignmentsForMember(
+  assignments: readonly RoomRoleAssignment[] | undefined,
+  member: MemberIdentity,
+  roleIds: readonly string[]
+): RoomRoleAssignment[] {
+  const nextAssignments = new Map<string, RoomRoleAssignment>();
+  const memberKey = memberIdentityKey(member);
+
+  for (const assignment of assignments ?? []) {
+    const key = memberIdentityKey({
+      id: assignment.userId,
+      oderId: assignment.oderId
+    });
+
+    if (!key || key === memberKey) {
+      continue;
+    }
+
+    nextAssignments.set(key, {
+      userId: assignment.userId,
+      oderId: assignment.oderId,
+      roleIds: uniqueStrings(assignment.roleIds)
+    });
+  }
+
+  const normalizedRoleIds = uniqueStrings(roleIds);
+
+  if (memberKey && normalizedRoleIds.length > 0) {
+    nextAssignments.set(memberKey, {
+      userId: member.id || member.oderId || memberKey,
+      oderId: member.oderId || undefined,
+      roleIds: normalizedRoleIds
+    });
+  }
+
+  return sortAssignments(Array.from(nextAssignments.values()));
+}
+
+export function removeRoleFromAssignments(assignments: readonly RoomRoleAssignment[] | undefined, roleId: string): RoomRoleAssignment[] {
+  return (assignments ?? [])
+    .map((assignment) => ({
+      ...assignment,
+      roleIds: assignment.roleIds.filter((candidateRoleId) => candidateRoleId !== roleId)
+    }))
+    .filter((assignment) => assignment.roleIds.length > 0);
+}
+
+export function getRoleIdsForMember(room: Room, member: MemberIdentity | null | undefined): string[] {
+  return getAssignedRoleIds(
+    normalizeRoomRoleAssignments(room.roleAssignments, room.members, normalizeRoomRoles(room.roles, room.permissions)),
+    member
+  );
+}

toju-app/src/app/domains/access-control/domain/role.rules.ts

@@ -0,0 +1,171 @@
+import {
+  RoomPermissionMatrix,
+  RoomPermissions,
+  RoomRole
+} from '../../../shared-kernel';
+import { SYSTEM_ROLE_IDS } from './access-control.constants';
+import {
+  buildRoleLookup,
+  buildSystemRole,
+  nextRolePosition,
+  normalizeName,
+  normalizePermissionMatrix,
+  roleSortAscending,
+  roleSortDescending
+} from './access-control.internal';
+
+const ROLE_COLORS = {
+  everyone: '#6b7280',
+  moderator: '#10b981',
+  admin: '#60a5fa'
+} as const;
+
+function resolveNormalizedRolePosition(
+  position: unknown,
+  fallbackPosition: number | undefined,
+  existingRoles: readonly RoomRole[],
+  defaultRoles: readonly RoomRole[]
+): number {
+  if (typeof position === 'number' && Number.isFinite(position)) {
+    return position;
+  }
+
+  if (typeof fallbackPosition === 'number') {
+    return fallbackPosition;
+  }
+
+  return nextRolePosition(existingRoles.length > 0 ? existingRoles : defaultRoles);
+}
+
+function normalizeRoomRoleEntry(
+  role: RoomRole | null | undefined,
+  defaultsById: Map<string, RoomRole>,
+  existingRoles: readonly RoomRole[],
+  defaultRoles: readonly RoomRole[]
+): RoomRole | null {
+  if (!role) {
+    return null;
+  }
+
+  const id = typeof role.id === 'string' ? role.id.trim() : '';
+  const fallbackRole = defaultsById.get(id);
+  const name = normalizeName(typeof role.name === 'string' ? role.name : (fallbackRole?.name ?? 'Role'));
+
+  if (!id || !name) {
+    return null;
+  }
+
+  return {
+    id,
+    name,
+    position: resolveNormalizedRolePosition(role.position, fallbackRole?.position, existingRoles, defaultRoles),
+    color: typeof role.color === 'string' && role.color.trim() ? role.color.trim() : fallbackRole?.color,
+    isSystem: typeof role.isSystem === 'boolean' ? role.isSystem : fallbackRole?.isSystem,
+    permissions: normalizePermissionMatrix(role.permissions ?? fallbackRole?.permissions)
+  };
+}
+
+export function buildDefaultRoomRoles(legacyPermissions?: RoomPermissions): RoomRole[] {
+  const everyonePermissions: RoomPermissionMatrix = {
+    joinVoice: legacyPermissions?.allowVoice === false ? 'deny' : 'allow',
+    shareScreen: legacyPermissions?.allowScreenShare === false ? 'deny' : 'allow',
+    uploadFiles: legacyPermissions?.allowFileUploads === false ? 'deny' : 'allow'
+  };
+  const moderatorPermissions: RoomPermissionMatrix = {
+    kickMembers: 'allow',
+    deleteMessages: 'allow',
+    manageChannels: legacyPermissions?.moderatorsManageRooms ? 'allow' : 'inherit',
+    manageIcon: legacyPermissions?.moderatorsManageIcon ? 'allow' : 'inherit'
+  };
+  const adminPermissions: RoomPermissionMatrix = {
+    kickMembers: 'allow',
+    banMembers: 'allow',
+    manageBans: 'allow',
+    deleteMessages: 'allow',
+    manageChannels: legacyPermissions?.adminsManageRooms ? 'allow' : 'inherit',
+    manageIcon: legacyPermissions?.adminsManageIcon ? 'allow' : 'inherit'
+  };
+
+  return [
+    buildSystemRole(SYSTEM_ROLE_IDS.everyone, '@everyone', 0, everyonePermissions, ROLE_COLORS.everyone),
+    buildSystemRole(SYSTEM_ROLE_IDS.moderator, 'Moderator', 200, moderatorPermissions, ROLE_COLORS.moderator),
+    buildSystemRole(SYSTEM_ROLE_IDS.admin, 'Admin', 300, adminPermissions, ROLE_COLORS.admin)
+  ];
+}
+
+export function sortRolesForDisplay(roles: readonly RoomRole[]): RoomRole[] {
+  return [...roles].sort(roleSortDescending);
+}
+
+export function normalizeRoomRoles(roles: readonly RoomRole[] | undefined, legacyPermissions?: RoomPermissions): RoomRole[] {
+  const defaultRoles = buildDefaultRoomRoles(legacyPermissions);
+  const defaultsById = buildRoleLookup(defaultRoles);
+  const normalizedById = new Map<string, RoomRole>();
+
+  for (const role of roles ?? []) {
+    const normalizedRole = normalizeRoomRoleEntry(role, defaultsById, Array.from(normalizedById.values()), defaultRoles);
+
+    if (normalizedRole) {
+      normalizedById.set(normalizedRole.id, normalizedRole);
+    }
+  }
+
+  for (const [roleId, role] of defaultsById) {
+    if (!normalizedById.has(roleId)) {
+      normalizedById.set(roleId, role);
+    }
+  }
+
+  return Array.from(normalizedById.values()).sort(roleSortAscending);
+}
+
+export function getRoomRoleById(roles: readonly RoomRole[] | undefined, roleId: string): RoomRole | undefined {
+  return (roles ?? []).find((role) => role.id === roleId);
+}
+
+export function createCustomRoomRole(name: string, roles: readonly RoomRole[]): RoomRole {
+  const normalizedName = normalizeName(name) || 'New Role';
+
+  return {
+    id: `role-${crypto.randomUUID()}`,
+    name: normalizedName,
+    position: nextRolePosition(roles),
+    permissions: {}
+  };
+}
+
+export function reorderRoles(roles: readonly RoomRole[], orderedRoleIds: readonly string[]): RoomRole[] {
+  const roleLookup = buildRoleLookup(roles);
+  const systemRoles = roles.filter((role) => role.isSystem);
+  const customRoles = orderedRoleIds.map((roleId) => roleLookup.get(roleId)).filter((role): role is RoomRole => !!role && !role.isSystem);
+  const remainingCustomRoles = roles.filter((role) => !role.isSystem && !orderedRoleIds.includes(role.id));
+  const orderedRoles = sortRolesForDisplay(systemRoles).concat(customRoles)
+    .concat(sortRolesForDisplay(remainingCustomRoles));
+
+  return orderedRoles
+    .map((role, index) => ({
+      ...role,
+      position: (orderedRoles.length - index - 1) * 100
+    }))
+    .sort(roleSortAscending);
+}
+
+export function withUpdatedRole(roles: readonly RoomRole[], roleId: string, updates: Partial<RoomRole>): RoomRole[] {
+  return normalizeRoomRoles(
+    roles.map((role) => {
+      if (role.id !== roleId) {
+        return role;
+      }
+
+      return {
+        ...role,
+        ...updates,
+        permissions: normalizePermissionMatrix(updates.permissions ?? role.permissions)
+      };
+    })
+  );
+}
+
+export function findAssignableRoles(roles: readonly RoomRole[]): RoomRole[] {
+  return sortRolesForDisplay(roles).filter((role) => role.id !== SYSTEM_ROLE_IDS.everyone);
+}

toju-app/src/app/domains/access-control/domain/room.rules.ts

@@ -0,0 +1,209 @@
+import {
+  PermissionState,
+  Room,
+  RoomMember,
+  RoomPermissionKey,
+  RoomPermissions,
+  RoomRole,
+  RoomRoleAssignment,
+  UserRole
+} from '../../../shared-kernel';
+import { SYSTEM_ROLE_IDS } from './access-control.constants';
+import {
+  getRolePermissionState,
+  permissionStateToBoolean,
+  resolveLegacyAllowState
+} from './access-control.internal';
+import type { MemberIdentity } from './access-control.models';
+import {
+  getAssignedRoleIds,
+  normalizeRoomRoleAssignments,
+  removeRoleFromAssignments
+} from './role-assignment.rules';
+import {
+  getRoomRoleById,
+  normalizeRoomRoles,
+  withUpdatedRole
+} from './role.rules';
+import { normalizeChannelPermissionOverrides, resolveRoomPermission } from './permission.rules';
+
+function applyRolePermissionChanges(
+  roles: readonly RoomRole[],
+  role: RoomRole | null | undefined,
+  changes: Partial<Record<RoomPermissionKey, PermissionState | undefined>>
+): RoomRole[] {
+  if (!role) {
+    return [...roles];
+  }
+
+  return withUpdatedRole(roles, role.id, {
+    permissions: {
+      ...role.permissions,
+      ...changes
+    }
+  });
+}
+
+function getEveryoneLegacyPermissionChanges(
+  role: RoomRole,
+  permissions: Partial<RoomPermissions>
+): Partial<Record<RoomPermissionKey, PermissionState | undefined>> {
+  return {
+    joinVoice: resolveLegacyAllowState(permissions.allowVoice, role.permissions?.joinVoice, 'deny'),
+    shareScreen: resolveLegacyAllowState(permissions.allowScreenShare, role.permissions?.shareScreen, 'deny'),
+    uploadFiles: resolveLegacyAllowState(permissions.allowFileUploads, role.permissions?.uploadFiles, 'deny')
+  };
+}
+
+function getModeratorLegacyPermissionChanges(
+  role: RoomRole,
+  permissions: Partial<RoomPermissions>
+): Partial<Record<RoomPermissionKey, PermissionState | undefined>> {
+  return {
+    manageChannels: resolveLegacyAllowState(permissions.moderatorsManageRooms, role.permissions?.manageChannels, 'inherit'),
+    manageIcon: resolveLegacyAllowState(permissions.moderatorsManageIcon, role.permissions?.manageIcon, 'inherit')
+  };
+}
+
+function getAdminLegacyPermissionChanges(
+  role: RoomRole,
+  permissions: Partial<RoomPermissions>
+): Partial<Record<RoomPermissionKey, PermissionState | undefined>> {
+  return {
+    manageChannels: resolveLegacyAllowState(permissions.adminsManageRooms, role.permissions?.manageChannels, 'inherit'),
+    manageIcon: resolveLegacyAllowState(permissions.adminsManageIcon, role.permissions?.manageIcon, 'inherit')
+  };
+}
+
+export function resolveLegacyRole(room: Room, identity: MemberIdentity | null | undefined): UserRole {
+  if (!identity) {
+    return 'member';
+  }
+
+  if (room.hostId === identity.id || room.hostId === identity.oderId) {
+    return 'host';
+  }
+
+  const assignedRoleIds = getAssignedRoleIds(room.roleAssignments, identity);
+
+  if (assignedRoleIds.includes(SYSTEM_ROLE_IDS.admin)) {
+    return 'admin';
+  }
+
+  if (assignedRoleIds.includes(SYSTEM_ROLE_IDS.moderator)) {
+    return 'moderator';
+  }
+
+  if (
+    resolveRoomPermission(room, identity, 'manageRoles') ||
+    resolveRoomPermission(room, identity, 'banMembers') ||
+    resolveRoomPermission(room, identity, 'manageBans') ||
+    resolveRoomPermission(room, identity, 'manageServer')
+  ) {
+    return 'admin';
+  }
+
+  if (
+    resolveRoomPermission(room, identity, 'kickMembers') ||
+    resolveRoomPermission(room, identity, 'deleteMessages') ||
+    resolveRoomPermission(room, identity, 'manageChannels') ||
+    resolveRoomPermission(room, identity, 'manageIcon')
+  ) {
+    return 'moderator';
+  }
+
+  return 'member';
+}
+
+export function deriveLegacyRoomPermissions(room: Pick<Room, 'roles' | 'permissions' | 'slowModeInterval'>): RoomPermissions {
+  const roles = normalizeRoomRoles(room.roles, room.permissions);
+  const everyoneRole = getRoomRoleById(roles, SYSTEM_ROLE_IDS.everyone);
+  const moderatorRole = getRoomRoleById(roles, SYSTEM_ROLE_IDS.moderator);
+  const adminRole = getRoomRoleById(roles, SYSTEM_ROLE_IDS.admin);
+
+  return {
+    allowVoice: permissionStateToBoolean(getRolePermissionState(everyoneRole, 'joinVoice'), true),
+    allowScreenShare: permissionStateToBoolean(getRolePermissionState(everyoneRole, 'shareScreen'), true),
+    allowFileUploads: permissionStateToBoolean(getRolePermissionState(everyoneRole, 'uploadFiles'), true),
+    adminsManageRooms: getRolePermissionState(adminRole, 'manageChannels') === 'allow',
+    moderatorsManageRooms: getRolePermissionState(moderatorRole, 'manageChannels') === 'allow',
+    adminsManageIcon: getRolePermissionState(adminRole, 'manageIcon') === 'allow',
+    moderatorsManageIcon: getRolePermissionState(moderatorRole, 'manageIcon') === 'allow',
+    slowModeInterval: room.slowModeInterval ?? room.permissions?.slowModeInterval ?? 0
+  };
+}
+
+export function withLegacyRoomPermissions(room: Room, permissions: Partial<RoomPermissions>): Room {
+  const roles = normalizeRoomRoles(room.roles, room.permissions);
+  const everyoneRole = getRoomRoleById(roles, SYSTEM_ROLE_IDS.everyone);
+  const moderatorRole = getRoomRoleById(roles, SYSTEM_ROLE_IDS.moderator);
+  const adminRole = getRoomRoleById(roles, SYSTEM_ROLE_IDS.admin);
+
+  let nextRoles = applyRolePermissionChanges(roles, everyoneRole, everyoneRole ? getEveryoneLegacyPermissionChanges(everyoneRole, permissions) : {});
+
+  nextRoles = applyRolePermissionChanges(
+    nextRoles,
+    moderatorRole,
+    moderatorRole ? getModeratorLegacyPermissionChanges(moderatorRole, permissions) : {}
+  );
+
+  nextRoles = applyRolePermissionChanges(nextRoles, adminRole, adminRole ? getAdminLegacyPermissionChanges(adminRole, permissions) : {});
+
+  return normalizeRoomAccessControl({
+    ...room,
+    roles: nextRoles,
+    slowModeInterval: permissions.slowModeInterval ?? room.slowModeInterval ?? room.permissions?.slowModeInterval ?? 0
+  });
+}
+
+export function hydrateRoomMembers(room: Room): RoomMember[] {
+  const roles = normalizeRoomRoles(room.roles, room.permissions);
+  const roleAssignments = normalizeRoomRoleAssignments(room.roleAssignments, room.members, roles);
+
+  return (room.members ?? []).map((member) => {
+    const roleIds = getAssignedRoleIds(roleAssignments, member);
+    const hydratedRoom: Room = {
+      ...room,
+      roles,
+      roleAssignments
+    };
+
+    return {
+      ...member,
+      roleIds,
+      role: resolveLegacyRole(hydratedRoom, member)
+    };
+  });
+}
+
+export function normalizeRoomAccessControl(room: Room): Room {
+  const roles = normalizeRoomRoles(room.roles, room.permissions);
+  const roleAssignments = normalizeRoomRoleAssignments(room.roleAssignments, room.members, roles);
+  const channelPermissions = normalizeChannelPermissionOverrides(room.channelPermissions, roles);
+  const slowModeInterval = room.slowModeInterval ?? room.permissions?.slowModeInterval ?? 0;
+  const nextRoom: Room = {
+    ...room,
+    roles,
+    roleAssignments,
+    channelPermissions,
+    slowModeInterval
+  };
+
+  nextRoom.permissions = deriveLegacyRoomPermissions(nextRoom);
+  nextRoom.members = hydrateRoomMembers(nextRoom);
+
+  return nextRoom;
+}
+
+export function removeRole(
+  roles: readonly RoomRole[],
+  assignments: readonly RoomRoleAssignment[] | undefined,
+  roleId: string
+): { roles: RoomRole[]; roleAssignments: RoomRoleAssignment[] } {
+  const nextRoles = roles.filter((role) => role.id !== roleId || role.isSystem);
+
+  return {
+    roles: normalizeRoomRoles(nextRoles),
+    roleAssignments: removeRoleFromAssignments(assignments, roleId)
+  };
+}

toju-app/src/app/domains/access-control/index.ts

@@ -0,0 +1,6 @@
+export * from './domain/access-control.models';
+export * from './domain/access-control.constants';
+export * from './domain/role.rules';
+export * from './domain/role-assignment.rules';
+export * from './domain/permission.rules';
+export * from './domain/room.rules';

toju-app/src/app/domains/chat/application/link-metadata.service.ts

@@ -0,0 +1,39 @@
+import { Injectable, inject } from '@angular/core';
+import { HttpClient } from '@angular/common/http';
+import { firstValueFrom } from 'rxjs';
+import { ServerDirectoryFacade } from '../../server-directory';
+import { LinkMetadata } from '../../../shared-kernel';
+
+const URL_PATTERN = /https?:\/\/[^\s<>)"']+/g;
+
+@Injectable({ providedIn: 'root' })
+export class LinkMetadataService {
+  private readonly http = inject(HttpClient);
+  private readonly serverDirectory = inject(ServerDirectoryFacade);
+
+  extractUrls(content: string): string[] {
+    return [...content.matchAll(URL_PATTERN)].map((m) => m[0]);
+  }
+
+  async fetchMetadata(url: string): Promise<LinkMetadata> {
+    try {
+      const apiBase = this.serverDirectory.getApiBaseUrl();
+      const result = await firstValueFrom(
+        this.http.get<Omit<LinkMetadata, 'url'>>(
+          `${apiBase}/link-metadata`,
+          { params: { url } }
+        )
+      );
+
+      return { url, ...result };
+    } catch {
+      return { url, failed: true };
+    }
+  }
+
+  async fetchAllMetadata(urls: string[]): Promise<LinkMetadata[]> {
+    const unique = [...new Set(urls)];
+
+    return Promise.all(unique.map((url) => this.fetchMetadata(url)));
+  }
+}

toju-app/src/app/domains/chat/feature/chat-messages/chat-messages.component.html

@@ -16,6 +16,7 @@
     (downloadRequested)="downloadAttachment($event)"
     (imageOpened)="openLightbox($event)"
     (imageContextMenuRequested)="openImageContextMenu($event)"
+    (embedRemoved)="handleEmbedRemoved($event)"
   />
 
   <div class="chat-bottom-bar absolute bottom-0 left-0 right-0 z-10">

toju-app/src/app/domains/chat/feature/chat-messages/chat-messages.component.ts

@@ -29,6 +29,7 @@ import {
   ChatMessageComposerSubmitEvent,
   ChatMessageDeleteEvent,
   ChatMessageEditEvent,
+  ChatMessageEmbedRemoveEvent,
   ChatMessageImageContextMenuEvent,
   ChatMessageReactionEvent,
   ChatMessageReplyEvent
@@ -191,6 +192,15 @@ export class ChatMessagesComponent {
     this.composerBottomPadding.set(height + 20);
   }
 
+  handleEmbedRemoved(event: ChatMessageEmbedRemoveEvent): void {
+    this.store.dispatch(
+      MessagesActions.removeLinkEmbed({
+        messageId: event.messageId,
+        url: event.url
+      })
+    );
+  }
+
   toggleKlipyGifPicker(): void {
     const nextState = !this.showKlipyGifPicker();
 

toju-app/src/app/domains/chat/feature/chat-messages/components/message-composer/chat-message-composer.component.html

@@ -1,4 +1,4 @@
-<!-- eslint-disable @angular-eslint/template/button-has-type, @angular-eslint/template/prefer-ngsrc -->
+<!-- eslint-disable @angular-eslint/template/button-has-type -->
 <div #composerRoot>
   @if (replyTo()) {
     <div class="pointer-events-auto flex items-center gap-2 bg-secondary/50 px-4 py-2">
@@ -11,7 +11,7 @@
       </span>
       <button
         (click)="clearReply()"
-        class="rounded p-1 hover:bg-secondary"
+        class="grid h-6 w-6 place-items-center rounded transition-colors hover:bg-secondary"
       >
         <ng-icon
           name="lucideX"
@@ -184,7 +184,7 @@
         (dragleave)="onDragLeave($event)"
         (drop)="onDrop($event)"
         placeholder="Type a message..."
-        class="chat-textarea w-full rounded-[1.35rem] border border-border pl-4 text-foreground placeholder:text-muted-foreground focus:outline-none focus:ring-2 focus:ring-primary"
+        class="chat-textarea w-full rounded-md border border-border pl-4 text-foreground placeholder:text-muted-foreground focus:outline-none focus:ring-2 focus:ring-primary"
         [class.border-dashed]="dragActive()"
         [class.border-primary]="dragActive()"
         [class.chat-textarea-expanded]="textareaExpanded()"
@@ -195,7 +195,7 @@
 
       @if (dragActive()) {
         <div
-          class="pointer-events-none absolute inset-0 flex items-center justify-center rounded-2xl border-2 border-dashed border-primary bg-primary/5"
+          class="pointer-events-none absolute inset-0 flex items-center justify-center rounded-md border-2 border-dashed border-primary bg-primary/5"
         >
           <div class="text-sm text-muted-foreground">Drop files to attach</div>
         </div>

toju-app/src/app/domains/chat/feature/chat-messages/components/message-item/chat-link-embed.component.html

@@ -0,0 +1,47 @@
+<!-- eslint-disable @angular-eslint/template/prefer-ngsrc -->
+@if (metadata(); as meta) {
+  @if (!meta.failed && (meta.title || meta.description)) {
+    <div class="group/embed relative mt-2 max-w-[480px] overflow-hidden rounded-md border border-border/60 bg-secondary/20">
+      @if (canRemove()) {
+        <button
+          type="button"
+          (click)="removed.emit()"
+          class="absolute right-1.5 top-1.5 z-10 grid h-5 w-5 place-items-center rounded bg-background/80 text-muted-foreground opacity-0 backdrop-blur-sm transition-opacity hover:text-foreground group-hover/embed:opacity-100"
+        >
+          <ng-icon
+            name="lucideX"
+            class="h-3 w-3"
+          />
+        </button>
+      }
+      <div class="flex">
+        @if (meta.imageUrl) {
+          <img
+            [src]="meta.imageUrl"
+            [alt]="meta.title || 'Link preview'"
+            class="hidden h-auto w-28 flex-shrink-0 object-cover sm:block"
+            loading="lazy"
+            referrerpolicy="no-referrer"
+          />
+        }
+        <div class="flex min-w-0 flex-1 flex-col gap-0.5 p-3">
+          @if (meta.siteName) {
+            <span class="truncate text-xs text-muted-foreground">{{ meta.siteName }}</span>
+          }
+          @if (meta.title) {
+            <a
+              [href]="meta.url"
+              target="_blank"
+              rel="noopener noreferrer"
+              class="line-clamp-2 text-sm font-semibold text-foreground hover:underline"
+              >{{ meta.title }}</a
+            >
+          }
+          @if (meta.description) {
+            <span class="line-clamp-2 text-xs text-muted-foreground">{{ meta.description }}</span>
+          }
+        </div>
+      </div>
+    </div>
+  }
+}

toju-app/src/app/domains/chat/feature/chat-messages/components/message-item/chat-link-embed.component.ts

@@ -0,0 +1,21 @@
+import {
+  Component,
+  input,
+  output
+} from '@angular/core';
+import { NgIcon, provideIcons } from '@ng-icons/core';
+import { lucideX } from '@ng-icons/lucide';
+import { LinkMetadata } from '../../../../../../shared-kernel';
+
+@Component({
+  selector: 'app-chat-link-embed',
+  standalone: true,
+  imports: [NgIcon],
+  viewProviders: [provideIcons({ lucideX })],
+  templateUrl: './chat-link-embed.component.html'
+})
+export class ChatLinkEmbedComponent {
+  readonly metadata = input.required<LinkMetadata>();
+  readonly canRemove = input(false);
+  readonly removed = output();
+}

toju-app/src/app/domains/chat/feature/chat-messages/components/message-item/chat-message-item.component.html

@@ -55,7 +55,7 @@
         <div class="flex flex-col gap-2">
           <button
             (click)="saveEdit()"
-            class="rounded p-1 text-primary hover:bg-primary/10"
+            class="grid h-6 w-6 place-items-center rounded text-primary transition-colors hover:bg-primary/10"
           >
             <ng-icon
               name="lucideCheck"
@@ -64,7 +64,7 @@
           </button>
           <button
             (click)="cancelEdit()"
-            class="rounded p-1 text-muted-foreground hover:bg-secondary"
+            class="grid h-6 w-6 place-items-center rounded text-muted-foreground transition-colors hover:bg-secondary"
           >
             <ng-icon
               name="lucideX"
@@ -77,43 +77,27 @@
       @if (msg.isDeleted) {
         <div class="mt-1 text-sm italic text-muted-foreground">{{ deletedMessageContent }}</div>
       } @else {
-        <div class="chat-markdown mt-1 break-words">
-          <remark
-            [markdown]="msg.content"
-            [processor]="$any(remarkProcessor)"
-          >
-            <ng-template
-              [remarkTemplate]="'code'"
-              let-node
-            >
-              @if (isMermaidCodeBlock(node.lang) && getMermaidCode(node.value)) {
-                <remark-mermaid [code]="getMermaidCode(node.value)" />
-              } @else {
-                <pre [class]="getCodeBlockClass(node.lang)"><code [class]="getCodeBlockClass(node.lang)">{{ node.value }}</code></pre>
-              }
-            </ng-template>
-            <ng-template
-              [remarkTemplate]="'image'"
-              let-node
-            >
-              <div class="relative mt-2 inline-block overflow-hidden rounded-md border border-border/60 bg-secondary/20">
-                <img
-                  [appChatImageProxyFallback]="node.url"
-                  [alt]="node.alt || 'Shared image'"
-                  class="block max-h-80 max-w-full w-auto"
-                  loading="lazy"
-                />
-                @if (isKlipyMediaUrl(node.url)) {
-                  <span
-                    class="pointer-events-none absolute bottom-2 left-2 rounded-full bg-black/70 px-2 py-0.5 text-[10px] font-semibold uppercase tracking-[0.24em] text-white/90 backdrop-blur-sm"
-                  >
-                    KLIPY
-                  </span>
-                }
-              </div>
-            </ng-template>
-          </remark>
-        </div>
+        @if (requiresRichMarkdown(msg.content)) {
+          @defer {
+            <div class="chat-markdown mt-1 break-words">
+              <app-chat-message-markdown [content]="msg.content" />
+            </div>
+          } @placeholder {
+            <div class="mt-1 whitespace-pre-wrap break-words text-sm text-foreground">{{ msg.content }}</div>
+          }
+        } @else {
+          <div class="mt-1 whitespace-pre-wrap break-words text-sm text-foreground">{{ msg.content }}</div>
+        }
+
+        @if (msg.linkMetadata?.length) {
+          @for (meta of msg.linkMetadata; track meta.url) {
+            <app-chat-link-embed
+              [metadata]="meta"
+              [canRemove]="isOwnMessage() || isAdmin()"
+              (removed)="removeEmbed(meta.url)"
+            />
+          }
+        }
 
         @if (attachmentsList.length > 0) {
           <div class="mt-2 space-y-2">
@@ -134,7 +118,7 @@
                     <div class="absolute right-2 top-2 flex gap-1 opacity-0 transition-opacity group-hover/img:opacity-100">
                       <button
                         (click)="openLightbox(att); $event.stopPropagation()"
-                        class="rounded-md bg-black/60 p-1.5 text-white backdrop-blur-sm transition-colors hover:bg-black/80"
+                        class="grid h-7 w-7 place-items-center rounded-md bg-black/60 text-white backdrop-blur-sm transition-colors hover:bg-black/80"
                         title="View full size"
                       >
                         <ng-icon
@@ -144,7 +128,7 @@
                       </button>
                       <button
                         (click)="downloadAttachment(att); $event.stopPropagation()"
-                        class="rounded-md bg-black/60 p-1.5 text-white backdrop-blur-sm transition-colors hover:bg-black/80"
+                        class="grid h-7 w-7 place-items-center rounded-md bg-black/60 text-white backdrop-blur-sm transition-colors hover:bg-black/80"
                         title="Download"
                       >
                         <ng-icon
@@ -364,7 +348,7 @@
       <div class="relative">
         <button
           (click)="toggleEmojiPicker()"
-          class="rounded-l-lg p-1.5 transition-colors hover:bg-secondary"
+          class="grid h-8 w-8 place-items-center rounded-l-lg transition-colors hover:bg-secondary"
         >
           <ng-icon
             name="lucideSmile"
@@ -388,7 +372,7 @@
 
       <button
         (click)="requestReply()"
-        class="p-1.5 transition-colors hover:bg-secondary"
+        class="grid h-8 w-8 place-items-center transition-colors hover:bg-secondary"
       >
         <ng-icon
           name="lucideReply"
@@ -399,7 +383,7 @@
       @if (isOwnMessage()) {
         <button
           (click)="startEdit()"
-          class="p-1.5 transition-colors hover:bg-secondary"
+          class="grid h-8 w-8 place-items-center transition-colors hover:bg-secondary"
         >
           <ng-icon
             name="lucideEdit"
@@ -411,7 +395,7 @@
       @if (isOwnMessage() || isAdmin()) {
         <button
           (click)="requestDelete()"
-          class="rounded-r-lg p-1.5 transition-colors hover:bg-destructive/10"
+          class="grid h-8 w-8 place-items-center rounded-r-lg transition-colors hover:bg-destructive/10"
         >
           <ng-icon
             name="lucideTrash2"

toju-app/src/app/domains/chat/feature/chat-messages/components/message-item/chat-message-item.component.ts

@@ -24,11 +24,6 @@ import {
   lucideTrash2,
   lucideX
 } from '@ng-icons/lucide';
-import { MermaidComponent, RemarkModule } from 'ngx-remark';
-import remarkBreaks from 'remark-breaks';
-import remarkGfm from 'remark-gfm';
-import remarkParse from 'remark-parse';
-import { unified } from 'unified';
 import {
   Attachment,
   AttachmentFacade,
@@ -41,10 +36,12 @@ import {
   ChatVideoPlayerComponent,
   UserAvatarComponent
 } from '../../../../../../shared';
-import { ChatImageProxyFallbackDirective } from '../../../chat-image-proxy-fallback.directive';
+import { ChatMessageMarkdownComponent } from './chat-message-markdown.component';
+import { ChatLinkEmbedComponent } from './chat-link-embed.component';
 import {
   ChatMessageDeleteEvent,
   ChatMessageEditEvent,
+  ChatMessageEmbedRemoveEvent,
   ChatMessageImageContextMenuEvent,
   ChatMessageReactionEvent,
   ChatMessageReplyEvent
@@ -60,28 +57,16 @@ const COMMON_EMOJIS = [
   '🔥',
   '👀'
 ];
-const PRISM_LANGUAGE_ALIASES: Record<string, string> = {
-  cs: 'csharp',
-  html: 'markup',
-  js: 'javascript',
-  md: 'markdown',
-  plain: 'none',
-  plaintext: 'none',
-  py: 'python',
-  sh: 'bash',
-  shell: 'bash',
-  svg: 'markup',
-  text: 'none',
-  ts: 'typescript',
-  xml: 'markup',
-  yml: 'yaml',
-  zsh: 'bash'
-};
-const MERMAID_LINE_BREAK_PATTERN = /\r\n?/g;
-const REMARK_PROCESSOR = unified()
-  .use(remarkParse)
-  .use(remarkGfm)
-  .use(remarkBreaks);
+const RICH_MARKDOWN_PATTERNS = [
+  /(^|\n)(#{1,6}\s|>\s|[-*+]\s|\d+\.\s|```|~~~)/m,
+  /!\[[^\]]*\]\([^)]+\)/,
+  /\[[^\]]+\]\([^)]+\)/,
+  /https?:\/\/\S+/,
+  /`[^`\n]+`/,
+  /\*\*[^*\n]+\*\*|__[^_\n]+__/,
+  /\*[^*\n]+\*|_[^_\n]+_/,
+  /(?:^|\n)\|.+\|/m
+];
 
 interface ChatMessageAttachmentViewModel extends Attachment {
   isAudio: boolean;
@@ -101,9 +86,8 @@ interface ChatMessageAttachmentViewModel extends Attachment {
     NgIcon,
     ChatAudioPlayerComponent,
     ChatVideoPlayerComponent,
-    RemarkModule,
-    MermaidComponent,
-    ChatImageProxyFallbackDirective,
+    ChatMessageMarkdownComponent,
+    ChatLinkEmbedComponent,
     UserAvatarComponent
   ],
   viewProviders: [
@@ -136,7 +120,6 @@ export class ChatMessageItemComponent {
   readonly repliedMessage = input<Message | undefined>();
   readonly currentUserId = input<string | null>(null);
   readonly isAdmin = input(false);
-  readonly remarkProcessor = REMARK_PROCESSOR;
 
   readonly replyRequested = output<ChatMessageReplyEvent>();
   readonly deleteRequested = output<ChatMessageDeleteEvent>();
@@ -147,6 +130,7 @@ export class ChatMessageItemComponent {
   readonly downloadRequested = output<Attachment>();
   readonly imageOpened = output<Attachment>();
   readonly imageContextMenuRequested = output<ChatMessageImageContextMenuEvent>();
+  readonly embedRemoved = output<ChatMessageEmbedRemoveEvent>();
 
   readonly commonEmojis = COMMON_EMOJIS;
   readonly deletedMessageContent = DELETED_MESSAGE_CONTENT;
@@ -255,6 +239,13 @@ export class ChatMessageItemComponent {
     this.deleteRequested.emit(this.message());
   }
 
+  removeEmbed(url: string): void {
+    this.embedRemoved.emit({
+      messageId: this.message().id,
+      url
+    });
+  }
+
   requestReferenceScroll(messageId: string): void {
     this.referenceRequested.emit(messageId);
   }
@@ -320,23 +311,8 @@ export class ChatMessageItemComponent {
     );
   }
 
-  getMermaidCode(code?: string): string {
-    return (code ?? '').replace(MERMAID_LINE_BREAK_PATTERN, '\n').trim();
-  }
-
-  isKlipyMediaUrl(url?: string): boolean {
-    if (!url)
-      return false;
-
-    return /^(?:https?:)?\/\/(?:[^/]+\.)?klipy\.com/i.test(url);
-  }
-
-  isMermaidCodeBlock(lang?: string): boolean {
-    return this.normalizeCodeLanguage(lang) === 'mermaid';
-  }
-
-  getCodeBlockClass(lang?: string): string {
-    return `language-${this.normalizeCodeLanguage(lang)}`;
+  requiresRichMarkdown(content: string): boolean {
+    return RICH_MARKDOWN_PATTERNS.some((pattern) => pattern.test(content));
   }
 
   formatBytes(bytes: number): string {
@@ -468,15 +444,6 @@ export class ChatMessageItemComponent {
     this.downloadRequested.emit(attachment);
   }
 
-  private normalizeCodeLanguage(lang?: string): string {
-    const normalized = (lang || '').trim().toLowerCase();
-
-    if (!normalized)
-      return 'none';
-
-    return PRISM_LANGUAGE_ALIASES[normalized] ?? normalized;
-  }
-
   private buildAttachmentViewModel(attachment: Attachment): ChatMessageAttachmentViewModel {
     const isVideo = this.isVideoAttachment(attachment);
     const isAudio = this.isAudioAttachment(attachment);

toju-app/src/app/domains/chat/feature/chat-messages/components/message-item/chat-message-markdown.component.html

@@ -0,0 +1,50 @@
+<remark
+  [markdown]="content()"
+  [processor]="$any(remarkProcessor)"
+>
+  <ng-template
+    [remarkTemplate]="'code'"
+    let-node
+  >
+    @if (isMermaidCodeBlock(node.lang) && getMermaidCode(node.value)) {
+      <remark-mermaid [code]="getMermaidCode(node.value)" />
+    } @else {
+      <pre [class]="getCodeBlockClass(node.lang)"><code [class]="getCodeBlockClass(node.lang)">{{ node.value }}</code></pre>
+    }
+  </ng-template>
+  <ng-template
+    [remarkTemplate]="'image'"
+    let-node
+  >
+    <div class="relative mt-2 inline-block overflow-hidden rounded-md border border-border/60 bg-secondary/20">
+      <img
+        [appChatImageProxyFallback]="node.url"
+        [alt]="node.alt || 'Shared image'"
+        class="block max-h-80 max-w-full w-auto"
+        loading="lazy"
+      />
+      @if (isKlipyMediaUrl(node.url)) {
+        <span
+          class="pointer-events-none absolute bottom-2 left-2 rounded-full bg-black/70 px-2 py-0.5 text-[10px] font-semibold uppercase tracking-[0.24em] text-white/90 backdrop-blur-sm"
+        >
+          KLIPY
+        </span>
+      }
+    </div>
+  </ng-template>
+  <ng-template
+    [remarkTemplate]="'link'"
+    let-node
+  >
+    <a
+      [href]="node.url"
+      [title]="node.title ?? ''"
+      [remarkNode]="node"
+    ></a>
+    @if (isYoutubeUrl(node.url)) {
+      <div class="block">
+        <app-chat-youtube-embed [url]="node.url" />
+      </div>
+    }
+  </ng-template>
+</remark>

toju-app/src/app/domains/chat/feature/chat-messages/components/message-item/chat-message-markdown.component.ts

@@ -0,0 +1,82 @@
+import { CommonModule } from '@angular/common';
+import { Component, input } from '@angular/core';
+import { MermaidComponent, RemarkModule } from 'ngx-remark';
+import remarkBreaks from 'remark-breaks';
+import remarkGfm from 'remark-gfm';
+import remarkParse from 'remark-parse';
+import { unified } from 'unified';
+import { ChatImageProxyFallbackDirective } from '../../../chat-image-proxy-fallback.directive';
+import { ChatYoutubeEmbedComponent, isYoutubeUrl } from './chat-youtube-embed.component';
+
+const PRISM_LANGUAGE_ALIASES: Record<string, string> = {
+  cs: 'csharp',
+  html: 'markup',
+  js: 'javascript',
+  md: 'markdown',
+  plain: 'none',
+  plaintext: 'none',
+  py: 'python',
+  sh: 'bash',
+  shell: 'bash',
+  svg: 'markup',
+  text: 'none',
+  ts: 'typescript',
+  xml: 'markup',
+  yml: 'yaml',
+  zsh: 'bash'
+};
+const KLIPY_MEDIA_URL_PATTERN = /^(?:https?:)?\/\/(?:[^/]+\.)?klipy\.com/i;
+const MERMAID_LINE_BREAK_PATTERN = /\r\n?/g;
+const REMARK_PROCESSOR = unified()
+  .use(remarkParse)
+  .use(remarkGfm)
+  .use(remarkBreaks);
+
+@Component({
+  selector: 'app-chat-message-markdown',
+  standalone: true,
+  imports: [
+    CommonModule,
+    RemarkModule,
+    MermaidComponent,
+    ChatImageProxyFallbackDirective,
+    ChatYoutubeEmbedComponent
+  ],
+  templateUrl: './chat-message-markdown.component.html'
+})
+export class ChatMessageMarkdownComponent {
+  readonly content = input.required<string>();
+  readonly remarkProcessor = REMARK_PROCESSOR;
+
+  getMermaidCode(code?: string): string {
+    return (code ?? '').replace(MERMAID_LINE_BREAK_PATTERN, '\n').trim();
+  }
+
+  isKlipyMediaUrl(url?: string): boolean {
+    if (!url)
+      return false;
+
+    return KLIPY_MEDIA_URL_PATTERN.test(url);
+  }
+
+  isYoutubeUrl(url?: string): boolean {
+    return isYoutubeUrl(url);
+  }
+
+  isMermaidCodeBlock(lang?: string): boolean {
+    return this.normalizeCodeLanguage(lang) === 'mermaid';
+  }
+
+  getCodeBlockClass(lang?: string): string {
+    return `language-${this.normalizeCodeLanguage(lang)}`;
+  }
+
+  private normalizeCodeLanguage(lang?: string): string {
+    const normalized = (lang || '').trim().toLowerCase();
+
+    if (!normalized)
+      return 'none';
+
+    return PRISM_LANGUAGE_ALIASES[normalized] ?? normalized;
+  }
+}

toju-app/src/app/domains/chat/feature/chat-messages/components/message-item/chat-youtube-embed.component.ts

@@ -0,0 +1,48 @@
+import { Component, computed, input } from '@angular/core';
+import { DomSanitizer } from '@angular/platform-browser';
+
+const YOUTUBE_URL_PATTERN = /(?:youtube\.com\/(?:watch\?.*v=|embed\/|shorts\/)|youtu\.be\/)([\w-]{11})/;
+
+@Component({
+  selector: 'app-chat-youtube-embed',
+  standalone: true,
+  template: `
+    @if (videoId()) {
+      <div class="mt-2 w-[480px] max-w-full overflow-hidden rounded-md border border-border/60">
+        <iframe
+          [src]="embedUrl()"
+          class="aspect-video w-full"
+          allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture"
+          allowfullscreen
+          loading="lazy"
+        ></iframe>
+      </div>
+    }
+  `
+})
+export class ChatYoutubeEmbedComponent {
+  readonly url = input.required<string>();
+
+  readonly videoId = computed(() => {
+    const match = this.url().match(YOUTUBE_URL_PATTERN);
+
+    return match?.[1] ?? null;
+  });
+
+  readonly embedUrl = computed(() => {
+    const id = this.videoId();
+
+    if (!id)
+      return '';
+
+    return this.sanitizer.bypassSecurityTrustResourceUrl(
+      `https://www.youtube-nocookie.com/embed/${encodeURIComponent(id)}`
+    );
+  });
+
+  constructor(private readonly sanitizer: DomSanitizer) {}
+}
+
+export function isYoutubeUrl(url?: string): boolean {
+  return !!url && YOUTUBE_URL_PATTERN.test(url);
+}

toju-app/src/app/domains/chat/feature/chat-messages/components/message-list/chat-message-list.component.html

@@ -37,7 +37,17 @@
       </div>
     }
 
-    @for (message of messages(); track message.id) {
+    @for (message of messages(); track message.id; let index = $index) {
+      @if (dateSeparatorLabels().get(index); as separatorLabel) {
+        <div class="flex items-center gap-3 py-1">
+          <div class="h-px flex-1 bg-border"></div>
+          <span class="rounded-full border border-border bg-background/90 px-3 py-1 text-xs font-medium text-muted-foreground shadow-sm">
+            {{ separatorLabel }}
+          </span>
+          <div class="h-px flex-1 bg-border"></div>
+        </div>
+      }
+
       <app-chat-message-item
         [message]="message"
         [repliedMessage]="findRepliedMessage(message.replyToId)"
@@ -52,6 +62,7 @@
         (downloadRequested)="handleDownloadRequested($event)"
         (imageOpened)="handleImageOpened($event)"
         (imageContextMenuRequested)="handleImageContextMenuRequested($event)"
+        (embedRemoved)="handleEmbedRemoved($event)"
       />
     }
   }

toju-app/src/app/domains/chat/feature/chat-messages/components/message-list/chat-message-list.component.ts

@@ -13,10 +13,12 @@ import {
   signal
 } from '@angular/core';
 import { Attachment } from '../../../../../attachment';
+import { getMessageTimestamp } from '../../../../domain/message.rules';
 import { Message } from '../../../../../../shared-kernel';
 import {
   ChatMessageDeleteEvent,
   ChatMessageEditEvent,
+  ChatMessageEmbedRemoveEvent,
   ChatMessageImageContextMenuEvent,
   ChatMessageReactionEvent,
   ChatMessageReplyEvent
@@ -45,6 +47,12 @@ declare global {
 export class ChatMessageListComponent implements AfterViewChecked, OnDestroy {
   @ViewChild('messagesContainer') messagesContainer?: ElementRef<HTMLDivElement>;
 
+  private readonly dateSeparatorFormatter = new Intl.DateTimeFormat('en-GB', {
+    day: 'numeric',
+    month: 'long',
+    year: 'numeric'
+  });
+
   readonly allMessages = input.required<Message[]>();
   readonly channelMessages = input.required<Message[]>();
   readonly loading = input(false);
@@ -62,6 +70,7 @@ export class ChatMessageListComponent implements AfterViewChecked, OnDestroy {
   readonly downloadRequested = output<Attachment>();
   readonly imageOpened = output<Attachment>();
   readonly imageContextMenuRequested = output<ChatMessageImageContextMenuEvent>();
+  readonly embedRemoved = output<ChatMessageEmbedRemoveEvent>();
 
   private readonly PAGE_SIZE = 50;
 
@@ -83,6 +92,24 @@ export class ChatMessageListComponent implements AfterViewChecked, OnDestroy {
     () => this.channelMessages().length > this.displayLimit()
   );
 
+  readonly dateSeparatorLabels = computed(() => {
+    const labels = new Map<number, string>();
+
+    let previousDayKey: string | null = null;
+
+    this.messages().forEach((message, index) => {
+      const timestamp = this.getMessageDateTimestamp(message);
+      const currentDayKey = this.getMessageDayKey(timestamp);
+
+      if (currentDayKey !== previousDayKey) {
+        labels.set(index, this.dateSeparatorFormatter.format(new Date(timestamp)));
+        previousDayKey = currentDayKey;
+      }
+    });
+
+    return labels;
+  });
+
   private initialScrollObserver: MutationObserver | null = null;
   private initialScrollTimer: ReturnType<typeof setTimeout> | null = null;
   private boundOnImageLoad: (() => void) | null = null;
@@ -274,6 +301,10 @@ export class ChatMessageListComponent implements AfterViewChecked, OnDestroy {
     this.imageContextMenuRequested.emit(event);
   }
 
+  handleEmbedRemoved(event: ChatMessageEmbedRemoveEvent): void {
+    this.embedRemoved.emit(event);
+  }
+
   private resetScrollingState(): void {
     this.initialScrollPending = true;
     this.stopInitialScrollWatch();
@@ -342,6 +373,16 @@ export class ChatMessageListComponent implements AfterViewChecked, OnDestroy {
     }
   }
 
+  private getMessageDateTimestamp(message: Message): number {
+    return message.timestamp || getMessageTimestamp(message);
+  }
+
+  private getMessageDayKey(timestamp: number): string {
+    const date = new Date(timestamp);
+
+    return `${date.getFullYear()}-${date.getMonth()}-${date.getDate()}`;
+  }
+
   private scrollToBottomSmooth(): void {
     const element = this.messagesContainer?.nativeElement;
 

toju-app/src/app/domains/chat/feature/chat-messages/components/message-overlays/chat-message-overlays.component.html

@@ -20,7 +20,7 @@
       <div class="absolute right-3 top-3 flex gap-2">
         <button
           (click)="downloadAttachment(lightboxAttachment()!)"
-          class="rounded-lg bg-black/60 p-2 text-white backdrop-blur-sm transition-colors hover:bg-black/80"
+          class="grid h-9 w-9 place-items-center rounded-lg bg-black/60 text-white backdrop-blur-sm transition-colors hover:bg-black/80"
           title="Download"
         >
           <ng-icon
@@ -30,7 +30,7 @@
         </button>
         <button
           (click)="closeLightbox()"
-          class="rounded-lg bg-black/60 p-2 text-white backdrop-blur-sm transition-colors hover:bg-black/80"
+          class="grid h-9 w-9 place-items-center rounded-lg bg-black/60 text-white backdrop-blur-sm transition-colors hover:bg-black/80"
           title="Close"
         >
           <ng-icon

toju-app/src/app/domains/chat/feature/chat-messages/models/chat-messages.models.ts

@@ -29,3 +29,8 @@ export interface ChatMessageImageContextMenuEvent {
 
 export type ChatMessageReplyEvent = Message;
 export type ChatMessageDeleteEvent = Message;
+
+export interface ChatMessageEmbedRemoveEvent {
+  messageId: string;
+  url: string;
+}

toju-app/src/app/domains/chat/feature/klipy-gif-picker/klipy-gif-picker.component.html

@@ -1,4 +1,3 @@
-<!-- eslint-disable @angular-eslint/template/prefer-ngsrc -->
 <div
   class="flex h-[min(70vh,42rem)] w-full flex-col overflow-hidden rounded-[1.65rem] border border-border/80 shadow-2xl ring-1 ring-white/5"
   role="dialog"
@@ -81,21 +80,21 @@
         </div>
       </div>
     } @else {
-      <div class="grid grid-cols-2 gap-4 md:grid-cols-3 xl:grid-cols-4">
+      <div class="columns-[12rem] gap-4">
         @for (gif of results(); track gif.id) {
           <button
             type="button"
             (click)="selectGif(gif)"
-            class="group overflow-hidden rounded-2xl border border-border/80 bg-secondary/10 text-left shadow-sm transition-transform duration-200 hover:-translate-y-0.5 hover:border-primary/50 hover:bg-secondary/30"
+            class="group mx-auto mb-4 inline-block w-full max-w-[15.5rem] break-inside-avoid align-top overflow-hidden rounded-2xl border border-border/80 bg-secondary/10 text-left shadow-sm transition-transform duration-200 hover:-translate-y-0.5 hover:border-primary/50 hover:bg-secondary/30"
           >
             <div
-              class="relative overflow-hidden bg-secondary/30"
-              [style.aspect-ratio]="gifAspectRatio(gif)"
+              class="relative flex items-center justify-center overflow-hidden bg-secondary/30"
+              [style.height.px]="gifCardHeight(gif)"
             >
               <img
                 [appChatImageProxyFallback]="gif.previewUrl || gif.url"
                 [alt]="gif.title || 'KLIPY GIF'"
-                class="h-full w-full object-cover transition-transform duration-200 group-hover:scale-[1.03]"
+                class="h-full w-full object-contain p-1.5 transition-transform duration-200 group-hover:scale-[1.03]"
                 loading="lazy"
               />
               <span

toju-app/src/app/domains/chat/feature/klipy-gif-picker/klipy-gif-picker.component.ts

@@ -23,6 +23,12 @@ import {
 import { KlipyGif, KlipyService } from '../../application/klipy.service';
 import { ChatImageProxyFallbackDirective } from '../chat-image-proxy-fallback.directive';
 
+const KLIPY_CARD_MIN_WIDTH = 140;
+const KLIPY_CARD_MAX_WIDTH = 248;
+const KLIPY_CARD_MIN_HEIGHT = 104;
+const KLIPY_CARD_MAX_HEIGHT = 220;
+const KLIPY_CARD_FALLBACK_SIZE = 160;
+
 @Component({
   selector: 'app-klipy-gif-picker',
   standalone: true,
@@ -106,12 +112,8 @@ export class KlipyGifPickerComponent implements OnInit, AfterViewInit, OnDestroy
     this.closed.emit(undefined);
   }
 
-  gifAspectRatio(gif: KlipyGif): string {
-    if (gif.width > 0 && gif.height > 0) {
-      return `${gif.width} / ${gif.height}`;
-    }
-
-    return '1 / 1';
+  gifCardHeight(gif: KlipyGif): number {
+    return this.getGifCardSize(gif).height;
   }
 
   private async loadResults(reset: boolean): Promise<void> {
@@ -182,4 +184,32 @@ export class KlipyGifPickerComponent implements OnInit, AfterViewInit, OnDestroy
       this.searchTimer = null;
     }
   }
+
+  private getGifCardSize(gif: KlipyGif): { width: number; height: number } {
+    if (gif.width <= 0 || gif.height <= 0) {
+      return {
+        width: KLIPY_CARD_FALLBACK_SIZE,
+        height: KLIPY_CARD_FALLBACK_SIZE
+      };
+    }
+
+    const maxScale = Math.min(
+      KLIPY_CARD_MAX_WIDTH / gif.width,
+      KLIPY_CARD_MAX_HEIGHT / gif.height
+    );
+    const minScale = Math.max(
+      KLIPY_CARD_MIN_WIDTH / gif.width,
+      KLIPY_CARD_MIN_HEIGHT / gif.height
+    );
+    const scale = minScale <= maxScale
+      ? Math.min(maxScale, Math.max(minScale, 1))
+      : maxScale;
+    const scaledWidth = Math.round(gif.width * scale);
+    const scaledHeight = Math.round(gif.height * scale);
+
+    return {
+      width: Math.min(KLIPY_CARD_MAX_WIDTH, Math.max(KLIPY_CARD_MIN_WIDTH, scaledWidth)),
+      height: Math.min(KLIPY_CARD_MAX_HEIGHT, Math.max(KLIPY_CARD_MIN_HEIGHT, scaledHeight))
+    };
+  }
 }