fix: 右侧消息区域 30x 权重 + 连续空读强制重扫，修复缓存错选联系人列表

monitor.py

@@ -11,7 +11,7 @@ logger = logging.getLogger("msgbot.monitor")
 
 
 class MessageMonitor:
-    """多线程消息监控器 — 窗口/消息列表缓存 + 浅层扫描"""
+    """多线程消息监控器 — 右侧消息区加权 + 空读自动重扫"""
 
     def __init__(self, on_message: Optional[Callable[[str, str], None]] = None):
         self._running = False
@@ -24,10 +24,12 @@ class MessageMonitor:
         # 内容指纹
         self._last_msg = {"wechat": "", "qq": ""}
 
-        # 窗口缓存 {(platform): Control 或 None}
+        # 窗口缓存
         self._cached_window: dict = {}
-        # 消息列表控件缓存 {(platform): Control 或 None}
+        # 消息列表控件缓存
         self._cached_list: dict = {}
+        # 连续空读计数（超阈值则强制重扫）
+        self._empty_reads: dict = {}
 
     def set_poll_interval(self, seconds: float):
         self._poll_interval = max(0.5, seconds)
@@ -54,6 +56,7 @@ class MessageMonitor:
             self._thread = None
         self._cached_window.clear()
         self._cached_list.clear()
+        self._empty_reads.clear()
         logger.info("消息监控已停止")
 
     @property
@@ -65,11 +68,11 @@ class MessageMonitor:
     def _run_loop(self):
         while self._running:
             try:
-                wechat_ok = not self._wechat_enabled or self._ensure_window("wechat")
-                qq_ok = not self._qq_enabled or self._ensure_window("qq")
-                if wechat_ok:
+                if self._wechat_enabled:
+                    self._ensure_window("wechat")
                     self._poll("wechat")
-                if qq_ok:
+                if self._qq_enabled:
+                    self._ensure_window("qq")
                     self._poll("qq")
             except Exception as e:
                 logger.debug(f"监控轮询异常: {e}")
@@ -77,12 +80,12 @@ class MessageMonitor:
 
     # ── 窗口缓存管理 ────────────────────────────────────────
 
-    def _ensure_window(self, platform: str) -> bool:
-        """确保窗口已缓存且仍有效，无效则清除缓存返回 False"""
+    def _ensure_window(self, platform: str):
+        """缓存窗口，不缓存消息列表（每次 poll 重找，但直取右半侧）"""
         win = self._cached_window.get(platform)
         if win and win.Exists(maxSearchSeconds=0.1):
-            return True
-        # 缓存失效，重新搜索
+            return
+
         self._cached_window.pop(platform, None)
         self._cached_list.pop(platform, None)
         names = {"wechat": ["微信", "WeChat"], "qq": ["QQ", "TIM"]}
@@ -90,44 +93,37 @@ class MessageMonitor:
             w = auto.WindowControl(Name=name)
             if w.Exists(maxSearchSeconds=0.3):
                 self._cached_window[platform] = w
-                # 同时找到消息列表控件
-                self._cached_list[platform] = self._find_list_control(w)
-                return True
-        return False
+                return
 
-    # ── 快速定位消息列表（只搜两层，非递归全树） ─────────
+    # ── 定位右侧消息区域（窗口直接子控件，右侧加权 30x） ─
 
-    def _find_list_control(self, window):
-        """在窗口的直接子控件中找最可能是消息列表的控件。
-
-        策略：取所有第一层子控件 → 收集其直接子文本 Name →
-        按文本数排序，取文本最多的那个。
-        完全不递归，UIA 调用仅 2 层深度。
-        """
+    def _find_right_panel(self, window):
+        """在窗口直接子控件中找最右侧且包含最多文本的控件。"""
         try:
+            win_rect = window.BoundingRectangle
+            win_cx = win_rect.left + win_rect.width() // 2
             best_ctrl = None
             best_score = 0
 
             for child in window.GetChildren():
                 try:
-                    # 跳过过小的控件（基本不可能是消息列表）
                     rect = child.BoundingRectangle
-                    if rect.width() < 100 or rect.height() < 50:
+
+                    # 跳过太小的控件
+                    if rect.width() < 80 or rect.height() < 40:
                         continue
 
-                    # 收集该控件的直接子文本
-                    own_texts = 0
-                    grand_texts = 0
+                    # 右侧权重：聊天消息区域必定在右半侧
+                    on_right = rect.left >= win_cx - 30
+                    right_weight = 30.0 if on_right else 1.0
+
+                    # 只取一层子 Name，不递归全树
+                    texts = 0
                     for sub in child.GetChildren():
                         if sub.Name and sub.Name.strip():
-                            own_texts += 1
-                        # 再下一层——但只取 Name，不递归
-                        for gsub in sub.GetChildren():
-                            if gsub.Name and gsub.Name.strip():
-                                grand_texts += 1
+                            texts += 1
 
-                    # 评分 = 直接子文本 + 0.5 * 孙子文本（避免噪声）
-                    score = own_texts + grand_texts * 0.5
+                    score = texts * right_weight
                     if score > best_score:
                         best_score = score
                         best_ctrl = child
@@ -147,35 +143,48 @@ class MessageMonitor:
         if not win:
             return
 
-        try:
-            # 优先使用缓存的列表控件
+        # 重扫次数限制：最多每 10 秒重扫一次，避免空转
+        now = time.time()
+        last_scan = getattr(self, f"_last_scan_{platform}", 0)
+        if now - last_scan < 10:
+            # 用缓存的老控件，但验证有效性
             list_ctrl = self._cached_list.get(platform)
             if list_ctrl and list_ctrl.Exists(maxSearchSeconds=0.1):
                 texts = self._get_texts_fast(list_ctrl)
             else:
-                # 缓存失效，重新找
-                list_ctrl = self._find_list_control(win)
-                self._cached_list[platform] = list_ctrl
-                texts = self._get_texts_fast(list_ctrl) if list_ctrl else []
+                texts = []
+        else:
+            # 可以做一次重扫
+            list_ctrl = self._find_right_panel(win)
+            self._cached_list[platform] = list_ctrl
+            setattr(self, f"_last_scan_{platform}", now)
+            texts = self._get_texts_fast(list_ctrl) if list_ctrl else []
 
-            if not texts:
-                return
+        if not texts:
+            # 空读积累，连续 3 次空读强制重扫下一次
+            empty = self._empty_reads.get(platform, 0) + 1
+            self._empty_reads[platform] = empty
+            if empty >= 3:
+                self._cached_list.pop(platform, None)
+                setattr(self, f"_last_scan_{platform}", 0)  # 允许立即重扫
+            return
 
-            latest = texts[-1].strip()
-            if not latest:
-                return
+        # 有文本时重置空读计数器
+        self._empty_reads[platform] = 0
 
-            # 内容指纹比较
-            if latest != self._last_msg.get(platform, ""):
-                self._last_msg[platform] = latest
-                logger.info(f"[{platform}] {latest}")
-                if self._on_message:
-                    self._on_message(platform, latest)
-        except Exception as e:
-            logger.debug(f"[{platform}] 轮询异常: {e}")
+        latest = texts[-1].strip()
+        if not latest:
+            return
+
+        # 内容指纹比较
+        if latest != self._last_msg.get(platform, ""):
+            self._last_msg[platform] = latest
+            logger.info(f"[{platform}] {latest}")
+            if self._on_message:
+                self._on_message(platform, latest)
 
     def _get_texts_fast(self, ctrl) -> list:
-        """从控件快速提取子文本（只取一层 Name + 常见子文本控件）。"""
+        """从控件快速提取子文本（只取一层 Name）。"""
         texts = []
         try:
             for child in ctrl.GetChildren():