Add dynamic example orchestration script

Replace hardcoded port assignments and npm scripts with run-all.ts that:
- Auto-discovers example directories and assigns ports
- Passes server URLs to basic-host via SERVERS env var
- Supports start, dev, and build commands

Update basic-host to fetch server list from /api/servers endpoint
and display server names from MCP server metadata.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

examples/basic-host/serve.ts

@@ -18,6 +18,7 @@ const __dirname = dirname(__filename);
 const HOST_PORT = parseInt(process.env.HOST_PORT || "8080", 10);
 const SANDBOX_PORT = parseInt(process.env.SANDBOX_PORT || "8081", 10);
 const DIRECTORY = join(__dirname, "dist");
+const SERVERS: string[] = process.env.SERVERS ? JSON.parse(process.env.SERVERS) : [];
 
 // ============ Host Server (port 8080) ============
 const hostApp = express();
@@ -34,6 +35,11 @@ hostApp.use((req, res, next) => {
 
 hostApp.use(express.static(DIRECTORY));
 
+// API endpoint to get configured server URLs
+hostApp.get("/api/servers", (_req, res) => {
+  res.json(SERVERS);
+});
+
 hostApp.get("/", (_req, res) => {
   res.redirect("/index.html");
 });
@@ -70,7 +76,7 @@ sandboxApp.use((_req, res) => {
 });
 
 // ============ Start both servers ============
-hostApp.listen(HOST_PORT, err => {
+hostApp.listen(HOST_PORT, (err) => {
   if (err) {
     console.error("Error starting server:", err);
     process.exit(1);
@@ -78,7 +84,7 @@ hostApp.listen(HOST_PORT, err => {
   console.log(`Host server:    http://localhost:${HOST_PORT}`);
 });
 
-sandboxApp.listen(SANDBOX_PORT, err => {
+sandboxApp.listen(SANDBOX_PORT, (err) => {
   if (err) {
     console.error("Error starting server:", err);
     process.exit(1);