feat: implement initial Electron chat application with core UI components and Convex backend integration.

convex/schema.ts

@@ -42,7 +42,8 @@ export default defineSchema({
     replyTo: v.optional(v.id("messages")),
     editedAt: v.optional(v.number()),
     pinned: v.optional(v.boolean()),
-  }).index("by_channel", ["channelId"]),
+  }).index("by_channel", ["channelId"])
+    .index("by_channel_pinned", ["channelId", "pinned"]),
 
   messageReactions: defineTable({
     messageId: v.id("messages"),
@@ -110,6 +111,7 @@ export default defineSchema({
     isDeafened: v.boolean(),
     isScreenSharing: v.boolean(),
     isServerMuted: v.boolean(),
+    watchingStream: v.optional(v.id("userProfiles")),
   })
     .index("by_channel", ["channelId"])
     .index("by_user", ["userId"]),