chore: switch to TEST mode and add environment indicator

server.ts

@@ -40,6 +40,14 @@ console.log('  Excel Table: ' + activeConfig.excelTable);
 console.log('*'.repeat(60) + '\n');
 
 const app = new Hono();
+// Environment config endpoint
+app.get('/api/config', (c) => {
+  return c.json({
+    mode: MODE,
+    description: activeConfig.description
+  });
+});
+
 
 // ============================================================================
 // ERROR LOGGING
@@ -1178,6 +1186,9 @@ app.post('/api/test-teams-webhook', async (c) => {
   return c.json({ success: ok, status: resp.status, body: text });
 });
 
+// Serve static files from frontend directory
+app.use('/*', serveStatic({ root: './frontend' }));
+
 const PORT = Number(process.env.PORT || 3020);
 
 console.log(`Job Creation with Excel Sync server running at http://localhost:${PORT}`);