feat: restructure repo for collaboration + add desktop app source

- Reorganize project: clean structure (portable/ u-claw-app/ usb-scripts/ website/)
- Move docs into website/, rename uclaw-scripts to usb-scripts
- Add u-claw-app/ Electron desktop source code
- Add portable/setup.sh: one-command dev environment setup
- Add portable/SkillHub.html: skill marketplace page
- Update README: dev guide, contribution workflow, project structure
- Update .gitignore: exclude runtime binaries and build artifacts
- Expand China install guide: npm mirrors, detailed onboard wizard

portable/Config.html

@@ -653,13 +653,50 @@ function tryPort(port) {
 
     testWs.onopen = () => {
         clearTimeout(timeout);
-        testWs.send(JSON.stringify({ type: 'auth', token: 'uclaw' }));
-        ws = testWs;
-        gwPort = port;
-        connected = true;
-        setStatus('on', `OpenClaw 已连接（端口 ${port}）`);
-        setupWs();
-        loadConfig().then(prefillFromConfig);
+        // Wait for connect.challenge from gateway, then send connect handshake
+        let connectSent = false;
+        const sendConnect = () => {
+            if (connectSent) return;
+            connectSent = true;
+            const connectId = String(++reqId);
+            pendingReqs[connectId] = (msg) => {
+                delete pendingReqs[connectId];
+                if (msg.ok !== false) {
+                    ws = testWs;
+                    gwPort = port;
+                    connected = true;
+                    setStatus('on', `OpenClaw 已连接（端口 ${port}）`);
+                    setupWs();
+                    loadConfig().then(prefillFromConfig);
+                } else {
+                    testWs.close();
+                    tryPort(port + 1);
+                }
+            };
+            testWs.send(JSON.stringify({
+                type: 'req', id: connectId, method: 'connect',
+                params: {
+                    minProtocol: 3, maxProtocol: 3,
+                    client: { id: 'webchat', version: '2.0.0', platform: 'web', mode: 'webchat' },
+                    role: 'operator',
+                    scopes: ['operator.admin', 'operator.approvals', 'operator.pairing'],
+                    auth: { token: 'uclaw' }
+                }
+            }));
+        };
+        // Listen for challenge or timeout
+        testWs.onmessage = (e) => {
+            try {
+                const msg = JSON.parse(e.data);
+                if (msg.type === 'event' && msg.event === 'connect.challenge') {
+                    sendConnect();
+                } else if (msg.type === 'res' && pendingReqs[msg.id]) {
+                    pendingReqs[msg.id](msg);
+                }
+            } catch(err) {}
+        };
+        // Fallback: if no challenge in 750ms, send anyway
+        setTimeout(sendConnect, 750);
     };
     testWs.onerror = () => { clearTimeout(timeout); tryPort(port + 1); };
     testWs.onclose = () => {
@@ -691,7 +728,7 @@ function setupWs() {
 function rpc(method, params) {
     return new Promise((resolve, reject) => {
         if (!ws || ws.readyState !== 1) { reject('未连接'); return; }
-        const id = ++reqId;
+        const id = String(++reqId);
         pendingReqs[id] = (msg) => msg.ok ? resolve(msg.payload) : reject(msg.payload || msg.error);
         ws.send(JSON.stringify({ type: 'req', id, method, params: params || {} }));
         setTimeout(() => { if (pendingReqs[id]) { delete pendingReqs[id]; reject('请求超时'); } }, 15000);