feat: auto rotate phone on detected errors

content.js

@@ -29,6 +29,14 @@
   let panel = null;
   let dragState = null;
   let codePollToken = 0;
+  let autoRotateObserver = null;
+  let autoRotateTimer = null;
+  let autoRotateInFlight = false;
+  let autoRotateEnabled = true;
+  let lastAutoRotateSignature = '';
+  let lastAutoRotateAt = 0;
+  const AUTO_ROTATE_DEBOUNCE_MS = 800;
+  const AUTO_ROTATE_COOLDOWN_MS = 8000;
 
   function stopCodePolling() {
     codePollToken += 1;
@@ -153,7 +161,7 @@
     const btn = $('.sb-fetch');
     if (btn) btn.disabled = true;
     try {
-      await saveSettings();
+      if (!options.skipSave) await saveSettings();
       const reason = options.reason || 'manual_replace';
       const releaseAction = options.releaseAction || (reason === 'phone_number_used' ? 'ban' : 'cancel');
       setStatus(releaseAction === 'ban' ? '正在释放被拒号码并获取新号...' : '正在取消上一个激活并获取新号...');
@@ -180,14 +188,70 @@
     return String(clone.innerText || clone.textContent || '').slice(-12000);
   }
 
-  async function detectAndRotate() {
+  function updateAutoRotateToggle() {
+    const btn = $('.sb-auto-toggle');
+    if (!btn) return;
+    btn.textContent = autoRotateEnabled ? '自动切号：开' : '自动切号：关';
+    btn.classList.toggle('sb-auto-on', autoRotateEnabled);
+  }
+
+  function buildAutoRotateSignature(reason, text) {
+    const compact = String(text || '').replace(/\s+/g, ' ').trim();
+    return `${reason}:${compact.slice(-220)}`;
+  }
+
+  async function rotateFromClassifiedError(classified, source = 'manual') {
+    const text = getPageTextForPhoneError();
+    const signature = buildAutoRotateSignature(classified.reason, text);
+    const now = Date.now();
+    if (autoRotateInFlight) return false;
+    if (source === 'auto' && signature === lastAutoRotateSignature && now - lastAutoRotateAt < AUTO_ROTATE_COOLDOWN_MS) {
+      return false;
+    }
+    autoRotateInFlight = true;
+    lastAutoRotateSignature = signature;
+    lastAutoRotateAt = now;
+    try {
+      setStatus(source === 'auto'
+        ? `检测到${classified.reason === 'phone_number_used' ? '号码已使用' : '验证码发送失败'}，正在自动切号...`
+        : '检测到手机号错误，正在切号...');
+      await fetchAndFill({ reason: classified.reason, releaseAction: classified.releaseAction, skipSave: true });
+      return true;
+    } finally {
+      autoRotateInFlight = false;
+    }
+  }
+
+  async function detectAndRotate(source = 'manual') {
     const text = getPageTextForPhoneError();
     const classified = await send('CLASSIFY_PHONE_ERROR', { text });
     if (!classified.matched) {
-      setStatus('未检测到明确的手机号错误，可用“手动换号”。', true);
-      return;
+      if (source !== 'auto') setStatus('未检测到明确的手机号错误。', true);
+      return false;
     }
-    await fetchAndFill({ reason: classified.reason, releaseAction: classified.releaseAction });
+    return rotateFromClassifiedError(classified, source);
+  }
+
+  function scheduleAutoRotateCheck() {
+    if (!autoRotateEnabled || autoRotateInFlight) return;
+    if (autoRotateTimer) clearTimeout(autoRotateTimer);
+    autoRotateTimer = setTimeout(() => {
+      autoRotateTimer = null;
+      detectAndRotate('auto').catch((error) => setStatus(error.message || String(error), true));
+    }, AUTO_ROTATE_DEBOUNCE_MS);
+  }
+
+  function startAutoRotateObserver() {
+    if (autoRotateObserver) return;
+    autoRotateObserver = new MutationObserver((mutations) => {
+      if (!autoRotateEnabled) return;
+      if (mutations.some((m) => m.target && panel && panel.contains(m.target))) return;
+      scheduleAutoRotateCheck();
+    });
+    if (document.body) {
+      autoRotateObserver.observe(document.body, { childList: true, subtree: true, characterData: true });
+    }
+    window.addEventListener('focus', scheduleAutoRotateCheck);
   }
 
   async function cancelActive() {
@@ -328,6 +392,7 @@
       #${PANEL_ID} code { color: #67e8f9; user-select: all; }
       #${PANEL_ID} .sb-hint { margin: 7px 0 0; color: #94a3b8; font-size: 12px; }
       #${PANEL_ID} .sb-status { color: #bbf7d0; }
+      #${PANEL_ID} .sb-auto-on { border-color: #22c55e; color: #bbf7d0; }
     `;
     document.documentElement.appendChild(style);
   }
@@ -342,6 +407,7 @@
         <button class="sb-close" type="button" title="隐藏">×</button>
       </div>
       <button class="sb-fetch sb-primary sb-top-fetch" type="button">获取并填入</button>
+      <button class="sb-auto-toggle sb-auto-on" type="button">自动切号：开</button>
       <label>API Key <input class="sb-api-key" type="password" placeholder="SMSBower API Key" /></label>
       <label>API 地址 <input class="sb-base-url" type="url" /></label>
       <div class="sb-row">
@@ -376,13 +442,22 @@
     document.documentElement.appendChild(panel);
     bindPanelEvents();
     await loadSettingsIntoPanel();
+    updateAutoRotateToggle();
+    startAutoRotateObserver();
+    scheduleAutoRotateCheck();
   }
 
   function bindPanelEvents() {
     $('.sb-close').addEventListener('click', () => { panel.style.display = 'none'; });
     $('.sb-save').addEventListener('click', saveSettings);
     $('.sb-fetch').addEventListener('click', () => fetchAndFill({ reason: 'manual_replace', releaseAction: 'cancel' }));
-    $('.sb-rotate-detect').addEventListener('click', detectAndRotate);
+    $('.sb-auto-toggle').addEventListener('click', () => {
+      autoRotateEnabled = !autoRotateEnabled;
+      updateAutoRotateToggle();
+      setStatus(autoRotateEnabled ? '自动切号已开启' : '自动切号已关闭');
+      if (autoRotateEnabled) scheduleAutoRotateCheck();
+    });
+    $('.sb-rotate-detect').addEventListener('click', () => detectAndRotate('manual'));
     $('.sb-rotate-used').addEventListener('click', () => fetchAndFill({ reason: 'phone_number_used', releaseAction: 'ban' }));
     $('.sb-cancel').addEventListener('click', cancelActive);
     $('.sb-code').addEventListener('click', fetchAndCopyCode);