docs(guide): rewrite CLAUDE.md with ZCLAW-first perspective

Major changes:
- Shift from "OpenFang desktop client" to "independent AI Agent desktop app"
- Add decision principle: "Is this useful for ZCLAW? Does it affect ZCLAW?"
- Simplify project structure and tech stack sections
- Replace OpenClaw vs OpenFang comparison with unified backend approach
- Consolidate troubleshooting from scattered sections into organized FAQ
- Update Hands system documentation with 8 capabilities and status
- Stream

desktop/src/store/handStore.ts

@@ -206,11 +206,17 @@ export const useHandStore = create<HandStore>((set, get) => ({
 
   loadHands: async () => {
     const client = get().client;
-    if (!client) return;
+    console.log('[HandStore] loadHands called, client:', !!client);
+    if (!client) {
+      console.warn('[HandStore] No client available, skipping loadHands');
+      return;
+    }
 
     set({ isLoading: true });
     try {
+      console.log('[HandStore] Calling client.listHands()...');
       const result = await client.listHands();
+      console.log('[HandStore] listHands result:', result);
       const validStatuses = ['idle', 'running', 'needs_approval', 'error', 'unavailable', 'setup_needed'] as const;
       const hands: Hand[] = (result?.hands || []).map((h: Record<string, unknown>) => {
         const status = validStatuses.includes(h.status as Hand['status'])
@@ -228,8 +234,10 @@ export const useHandStore = create<HandStore>((set, get) => ({
           metricCount: (h.metric_count as number) || ((h.metrics as unknown[])?.length),
         };
       });
+      console.log('[HandStore] Mapped hands:', hands.length, 'items');
       set({ hands, isLoading: false });
-    } catch {
+    } catch (err) {
+      console.error('[HandStore] loadHands error:', err);
       set({ isLoading: false });
     }
   },