feat(backend): implement all missing endpoints, real analytics queries, and WebSocket server

- Replace stub analytics.repository.ts with real PostgreSQL queries using pg.Pool
- Add /api/guilds, /api/config, /api/auth/login, /api/ui-state (GET/POST)
- Add /api/review, /api/recordings, /api/analysis/search
- Add /api/messages/:id/reanalyze endpoint
- Add /api/analytics/heatmap and /api/analytics/topics
- Implement media routes (stub responses, backend has no Discord voice client)
- Add WebSocket server at /ws with heartbeat and broadcast functions
- Fix analytics route paths to match frontend contract (dual paths for backward compat)
- Export getPool() from database module for raw SQL queries
- Register all new routers in app.ts

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

services/backend/src/http/app.ts

@@ -5,11 +5,17 @@ import express, {
   type Response,
 } from "express";
 import helmet from "helmet";
+import { createAnalysisRouter } from "../modules/analysis/analysis.routes.js";
 import { createAnalyticsRouter } from "../modules/analytics/analytics.routes.js";
+import { createAuthRouter } from "../modules/auth/auth.routes.js";
+import { createConfigRouter } from "../modules/config/config.routes.js";
 import { createHealthRouter } from "../modules/health/health.routes.js";
 import { createMediaRouter } from "../modules/media/media.routes.js";
 import { createMessagesRouter } from "../modules/messages/messages.routes.js";
+import { createRecordingsRouter } from "../modules/recordings/recordings.routes.js";
+import { createUiStateRouter } from "../modules/ui-state/ui-state.routes.js";
 import { createVoiceRouter } from "../modules/voice/voice.routes.js";
+import { createGuildsRouter } from "../modules/voice/guilds.routes.js";
 import { createChildLogger } from "../shared/logger/index.js";
 import { errorHandler } from "../shared/middlewares/index.js";
 
@@ -55,10 +61,18 @@ export function createHttpApp(): Express {
   app.use("/api", createHealthRouter());
 
   // API routes
+  app.use("/api", createAuthRouter());
+  app.use("/api", createConfigRouter());
   app.use("/api", createMessagesRouter());
+  app.use("/api", createAnalysisRouter());
   app.use("/api", createAnalyticsRouter());
   app.use("/api", createMediaRouter());
   app.use("/api", createVoiceRouter());
+  app.use("/api", createRecordingsRouter());
+  app.use("/api", createUiStateRouter());
+
+  // Guilds routes (must be before catch-all, after other /api routes)
+  app.use("/api/guilds", createGuildsRouter());
 
   // 404 handler
   app.use((_req: Request, res: Response) => {

services/backend/src/http/server.ts

@@ -1,20 +1,27 @@
+import { createServer, type Server } from "node:http";
 import { config } from "../shared/config/index.js";
 import { initializeDatabase } from "../shared/database/index.js";
 import { createChildLogger } from "../shared/logger/index.js";
 import { createHttpApp } from "./app.js";
+import { createWebSocketServer } from "../ws/server.js";
 
 const logger = createChildLogger("http.server");
 
-export async function startHttpServer() {
+export async function startHttpServer(): Promise<Server> {
   await initializeDatabase();
 
   const app = createHttpApp();
   const port = config.WEBSERVER_PORT;
 
-  return new Promise<void>((resolve, reject) => {
-    const server = app.listen(port, () => {
+  const server = createServer(app);
+
+  // Attach WebSocket server to the same HTTP server
+  createWebSocketServer(server);
+
+  return new Promise<Server>((resolve, reject) => {
+    server.listen(port, () => {
       logger.info({ port }, "HTTP server started");
-      resolve();
+      resolve(server);
     });
 
     server.on("error", (err) => {