feat: Add torch client identity, early connection and auto-request

- Named clients persisted in localStorage, editable from dropdown
- Auto-request: clients can auto-receive torch when no holder exists
- Early torch init in App.vue (fires before WebMCP, awaited later)
- Deferred torch connection in toolRegistry for race condition safety
- TorchButton rewritten as dropdown with name editor, toggle, client list
- Server broadcasts client names, supports update-name message
- MCP tool handlers display client names

frontend/src/App.vue

@@ -244,6 +244,9 @@ onMounted(async () => {
   // Connect to WebSocket for Claude status updates
   connectStatusWs()
 
+  // Fire torch connection early (don't await yet)
+  const torchReady = initTorch()
+
   // Initialize WebMCP connection
   await initWebMCP()
 
@@ -320,8 +323,8 @@ onMounted(async () => {
     })
   }
 
-  // Initialize torch system (handles MCP connection based on torch state)
-  await initTorch()
+  // Ensure torch connection is established
+  await torchReady
 })
 
 onUnmounted(() => {