feat: Introduce multi-platform architecture for Electron and Web clients with shared UI components, Convex backend for messaging, and integrated search functionality.

convex/messages.ts

@@ -164,6 +164,42 @@ export const listPinned = query({
   },
 });
 
+// Slim paginated query for bulk search index rebuilding.
+// Skips reactions, avatars, reply resolution — only resolves sender username.
+export const fetchBulkPage = query({
+  args: {
+    channelId: v.id("channels"),
+    paginationOpts: paginationOptsValidator,
+  },
+  returns: v.any(),
+  handler: async (ctx, args) => {
+    const result = await ctx.db
+      .query("messages")
+      .withIndex("by_channel", (q) => q.eq("channelId", args.channelId))
+      .order("asc")
+      .paginate(args.paginationOpts);
+
+    const enrichedPage = await Promise.all(
+      result.page.map(async (msg) => {
+        const sender = await ctx.db.get(msg.senderId);
+        return {
+          id: msg._id,
+          channel_id: msg.channelId,
+          sender_id: msg.senderId,
+          username: sender?.username || "Unknown",
+          ciphertext: msg.ciphertext,
+          nonce: msg.nonce,
+          created_at: new Date(msg._creationTime).toISOString(),
+          pinned: msg.pinned || false,
+          replyToId: msg.replyTo || null,
+        };
+      })
+    );
+
+    return { ...result, page: enrichedPage };
+  },
+});
+
 export const remove = mutation({
   args: { id: v.id("messages"), userId: v.id("userProfiles") },
   returns: v.null(),