feat: Security

toju-app/src/app/infrastructure/persistence/electron-database.service.ts

@@ -4,7 +4,8 @@ import {
   User,
   Room,
   Reaction,
-  BanEntry
+  BanEntry,
+  type MessageRevision
 } from '../../shared-kernel';
 import type { CustomEmoji } from '../../shared-kernel';
 import type { ElectronApi } from '../../core/platform/electron/electron-api.models';
@@ -38,6 +39,16 @@ export class ElectronDatabaseService {
     return this.api.command({ type: 'save-message', payload: { message } });
   }
 
+  saveMessageRevision(revision: MessageRevision): Promise<void> {
+    return this.api.command({
+      type: 'save-meta',
+      payload: {
+        key: `message-revision:${revision.messageId}:${revision.revision}`,
+        value: JSON.stringify(revision)
+      }
+    });
+  }
+
   /**
     * Retrieve the latest messages for a room, sorted oldest-first for display.
    *