feat: progress notes UI, search/filter, chat backend relay (HQ-21)

- Add progress note input to TaskDetailPanel (textarea + Cmd+Enter submit)
- Add addProgressNote API function
- Add search bar and priority filter to Queue page
- Include chat backend: WebSocket relay (gateway-relay.ts), chat routes (chat.ts)
- Chat frontend updated to connect via backend relay (/api/chat/ws)

backend/src/index.ts

@@ -3,6 +3,7 @@ import { cors } from "@elysiajs/cors";
 import { taskRoutes } from "./routes/tasks";
 import { adminRoutes } from "./routes/admin";
 import { projectRoutes } from "./routes/projects";
+import { chatRoutes } from "./routes/chat";
 import { auth } from "./lib/auth";
 import { db } from "./db";
 import { tasks, users } from "./db/schema";
@@ -116,6 +117,7 @@ const app = new Elysia()
   .use(taskRoutes)
   .use(projectRoutes)
   .use(adminRoutes)
+  .use(chatRoutes)
 
   // Current user info (role, etc.)
   .get("/api/me", async ({ request }) => {