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/App.tsx

@@ -55,7 +55,7 @@ function App() {
 
   const { connect, hands, approveHand, loadHands } = useGatewayStore();
   const { activeTeam, setActiveTeam, teams } = useTeamStore();
-  const { setCurrentAgent } = useChatStore();
+  const { setCurrentAgent, newConversation } = useChatStore();
   const { isNeeded: onboardingNeeded, isLoading: onboardingLoading, markCompleted } = useOnboarding();
 
   useEffect(() => {
@@ -190,6 +190,12 @@ function App() {
     setMainContentView(view);
   };
 
+  // 处理新对话
+  const handleNewChat = () => {
+    newConversation();
+    setMainContentView('chat');
+  };
+
   const handleSelectTeam = (teamId: string) => {
     const team = teams.find(t => t.id === teamId);
     if (team) {
@@ -233,6 +239,7 @@ function App() {
         onMainViewChange={handleMainViewChange}
         selectedTeamId={selectedTeamId}
         onSelectTeam={handleSelectTeam}
+        onNewChat={handleNewChat}
       />
 
       {/* 主内容区 */}
@@ -252,7 +259,7 @@ function App() {
             animate="animate"
             exit="exit"
             transition={defaultTransition}
-            className="flex-1 overflow-hidden relative"
+            className="flex-1 overflow-hidden relative flex flex-col"
           >
             {mainContentView === 'automation' ? (
               <motion.div