fix: No longer displays edited on all messages and fix Disconnected from signaling server on multiple clients

toju-app/src/app/domains/chat/domain/rules/message-revision.builder.rules.spec.ts

@@ -55,7 +55,21 @@ describe('message-revision.builder.rules', () => {
     expect(revision.content).toBe('edited');
   });
 
-  it('materializes message state from a revision', async () => {
+  it('materializes create revisions without an editedAt label timestamp', async () => {
+    const revision = await buildMessageRevision({
+      message: createMessage(),
+      type: 'create',
+      actorId: 'user-1',
+      editedAt: 1_000
+    });
+    const materialized = materializeMessageFromRevision(null, revision);
+
+    expect(materialized.timestamp).toBe(1_000);
+    expect(materialized.editedAt).toBeUndefined();
+    expect(materialized.revision).toBe(0);
+  });
+
+  it('materializes message state from an edit revision', async () => {
     const revision = await buildMessageRevision({
       message: createMessage(),
       type: 'author-edit',
@@ -67,6 +81,7 @@ describe('message-revision.builder.rules', () => {
 
     expect(materialized.revision).toBe(1);
     expect(materialized.content).toBe('edited');
+    expect(materialized.editedAt).toBe(2_000);
     expect(materialized.headHash).toBe(revision.headHash);
   });
 

toju-app/src/app/domains/chat/domain/rules/message-revision.builder.rules.ts

@@ -85,7 +85,7 @@ export function materializeMessageFromRevision(
     senderId: revision.senderId,
     senderName: revision.senderName ?? base.senderName,
     content: revision.isDeleted ? DELETED_MESSAGE_CONTENT : (revision.content ?? base.content),
-    editedAt: revision.editedAt,
+    editedAt: revision.type === 'create' ? undefined : revision.editedAt,
     revision: revision.revision,
     headHash: revision.headHash,
     isDeleted: revision.isDeleted,

toju-app/src/app/domains/chat/domain/rules/message.rules.spec.ts

@@ -0,0 +1,59 @@
+import {
+  describe,
+  it,
+  expect
+} from 'vitest';
+import type { Message } from '../../../../shared-kernel';
+import { shouldShowMessageEditedLabel } from './message.rules';
+
+function createMessage(overrides: Partial<Message> = {}): Message {
+  return {
+    id: 'message-1',
+    roomId: 'room-1',
+    senderId: 'user-1',
+    senderName: 'User 1',
+    content: 'hello',
+    timestamp: 1_000,
+    reactions: [],
+    isDeleted: false,
+    ...overrides
+  };
+}
+
+describe('message.rules', () => {
+  describe('shouldShowMessageEditedLabel', () => {
+    it('returns false for newly created messages without an edit revision', () => {
+      expect(shouldShowMessageEditedLabel(createMessage())).toBe(false);
+    });
+
+    it('returns false when editedAt equals the original timestamp (legacy create rows)', () => {
+      expect(shouldShowMessageEditedLabel(createMessage({
+        editedAt: 1_000,
+        timestamp: 1_000,
+        revision: 0
+      }))).toBe(false);
+    });
+
+    it('returns true when a message has an edit revision', () => {
+      expect(shouldShowMessageEditedLabel(createMessage({
+        editedAt: 2_000,
+        revision: 1
+      }))).toBe(true);
+    });
+
+    it('returns true for legacy edited messages with editedAt after timestamp', () => {
+      expect(shouldShowMessageEditedLabel(createMessage({
+        editedAt: 2_000,
+        timestamp: 1_000
+      }))).toBe(true);
+    });
+
+    it('returns false for deleted messages even when editedAt is set', () => {
+      expect(shouldShowMessageEditedLabel(createMessage({
+        editedAt: 2_000,
+        revision: 1,
+        isDeleted: true
+      }))).toBe(false);
+    });
+  });
+});

toju-app/src/app/domains/chat/domain/rules/message.rules.ts

@@ -1,10 +1,26 @@
 import { DELETED_MESSAGE_CONTENT, type Message } from '../../../../shared-kernel';
+import { getMessageRevision } from './message-integrity.rules';
 
 /** Extracts the effective timestamp from a message (editedAt takes priority). */
 export function getMessageTimestamp(msg: Message): number {
   return msg.editedAt || msg.timestamp || 0;
 }
 
+/** Whether the UI should show the "(edited)" label for a message. */
+export function shouldShowMessageEditedLabel(
+  message: Pick<Message, 'editedAt' | 'timestamp' | 'revision' | 'isDeleted'>
+): boolean {
+  if (message.isDeleted || message.editedAt === undefined) {
+    return false;
+  }
+
+  if (getMessageRevision(message) > 0) {
+    return true;
+  }
+
+  return typeof message.timestamp === 'number' && message.editedAt > message.timestamp;
+}
+
 /** Computes the most recent timestamp across a batch of messages. */
 export function getLatestTimestamp(messages: Message[]): number {
   return messages.reduce((max, msg) => Math.max(max, getMessageTimestamp(msg)), 0);