feat: AP always-on mode - hotspot stays until WiFi STA connects

Redesign provisioning from one-shot blocking to persistent background manager:
- AP hotspot starts at boot regardless of eth0 status
- Captive portal runs alongside AP for WiFi configuration
- AP automatically shuts down only when WiFi STA connects
- WiFi drops at runtime -> AP auto-restarts
- WiFi connect fails -> AP auto-restarts for retry
- client.js no longer blocks on network; connects WS when ready

Made-with: Cursor

lib/client.js

@@ -7,7 +7,8 @@ const log       = require('./logger');
 const { getBoxId }        = require('./fingerprint');
 const { collect }         = require('./metrics');
 const { getDashboardInfo, startTtyd, FrpcManager } = require('./frpc');
-const { ensureNetwork }   = require('./provisioning');
+const { ProvisionManager } = require('./provisioning');
+const { hasInternet }      = require('./network');
 
 const MAX_BACKOFF_MS   = 60_000;
 const PONG_TIMEOUT_MS  = 15_000;
@@ -59,12 +60,27 @@ class ClawClient {
   async start() {
     log.info('clawd', `启动中... 服务器 = ${this._cfg.server}`);
 
-    // 第一步：确保网络可用（无网时进入 AP 配网模式）
-    await ensureNetwork({ clawId: this._cfg.claw_id });
+    // 后台启动 AP 配网管理器（WiFi 未连接时常驻热点）
+    this._provisionMgr = new ProvisionManager(this._cfg.claw_id);
+    this._provisionMgr.start();
 
-    // 第二步：并行获取 dashboard 信息 + 启动 ttyd
+    // 有网络时直接连接云端
+    if (hasInternet()) {
+      await this._proceedWithConnection();
+    } else {
+      // 等待配网完成后再连
+      log.info('clawd', '等待网络就绪...');
+      this._provisionMgr.once('network-ready', () => {
+        this._proceedWithConnection().catch(e => {
+          log.error('clawd', '连接启动失败:', e.message);
+        });
+      });
+    }
+  }
+
+  async _proceedWithConnection() {
     const [dashInfo] = await Promise.all([
-      getDashboardInfo(),
+      getDashboardInfo().catch(e => { log.warn('clawd', 'dashboard 信息获取失败:', e.message); return null; }),
       startTtyd().catch(e => log.warn('ttyd', '启动失败:', e.message)),
     ]);
     this._dashInfo = dashInfo || {};
@@ -77,6 +93,7 @@ class ClawClient {
     this._clearHeartbeat();
     this._clearPing();
     if (this._sdTimer) { clearInterval(this._sdTimer); this._sdTimer = null; }
+    if (this._provisionMgr) { this._provisionMgr.stop(); this._provisionMgr = null; }
     this._frpc.stop();
     if (this._ws) this._ws.terminate();
     this._sdNotify('STOPPING=1');