feat: scaffold Hono server with auth and health check

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

server/src/index.ts

@@ -0,0 +1,44 @@
+import { Hono } from "hono";
+import { cors } from "hono/cors";
+import { auth } from "./auth.js";
+import { env } from "./env.js";
+
+const app = new Hono();
+
+// CORS for dashboard
+app.use(
+  "*",
+  cors({
+    origin: env.CORS_ORIGIN,
+    allowHeaders: ["Content-Type", "Authorization"],
+    allowMethods: ["GET", "POST", "PUT", "DELETE", "OPTIONS"],
+    credentials: true,
+  })
+);
+
+// Better Auth handler
+app.on(["POST", "GET"], "/api/auth/*", (c) => {
+  return auth.handler(c.req.raw);
+});
+
+// Health check
+app.get("/health", (c) => c.json({ status: "ok" }));
+
+// Start server with WebSocket support
+const server = Bun.serve({
+  port: env.PORT,
+  fetch: app.fetch,
+  websocket: {
+    open(ws) {
+      console.log("WebSocket connected");
+    },
+    message(ws, message) {
+      // placeholder — Task 4 implements device/dashboard handlers
+    },
+    close(ws) {
+      console.log("WebSocket disconnected");
+    },
+  },
+});
+
+console.log(`Server running on port ${server.port}`);