Enhance health check and inventory endpoints: include bridge connection status and web client count

web/server/server.js

@@ -74,7 +74,13 @@ const server = createServer(app);
 
 // Health check
 app.get('/api/health', (req, res) => {
-  res.json({ status: 'ok', lastUpdate, uptime: process.uptime() });
+  res.json({
+    status: 'ok',
+    lastUpdate,
+    uptime: process.uptime(),
+    bridgeConnected: bridgeClients.size > 0,
+    webClients: webClients.size,
+  });
 });
 
 // Get current inventory state
@@ -89,6 +95,7 @@ app.get('/api/inventory', (req, res) => {
     craftable: craftableRecipes,
     craftTurtleOk,
     lastUpdate,
+    bridgeConnected: bridgeClients.size > 0,
   });
 });
 
@@ -396,6 +403,7 @@ function updateStateFromBridge(data) {
     craftable: craftableRecipes,
     craftTurtleOk,
     lastUpdate,
+    bridgeConnected: bridgeClients.size > 0,
   });
 
   // Persist to SQLite (debounced — won't block the broadcast)
@@ -489,6 +497,7 @@ wss.on('connection', (ws, req) => {
     craftable: craftableRecipes,
     craftTurtleOk,
     lastUpdate,
+    bridgeConnected: bridgeClients.size > 0,
   }));
   
   ws.on('pong', () => { ws.isAlive = true; });