feat(aw): scan both active foreground and visible desktop windows for distractions

Previously, fallback window detection only checked user32.GetForegroundWindow().
If the user had YouTube Shorts open in Chrome on a second monitor or behind the terminal,
it was ignored.

Now check_for_distraction():
1. Checks the active foreground window first.
2. If not a distraction, scans all visible top-level desktop windows via find_window_by_match().
3. Immediately wakes the cat from sleeping or sitting if any distraction window is discovered.

catser/activitywatch.py

@@ -169,57 +169,76 @@ class ActivityWatchClient:
         """Signals the background worker to exit."""
         self._running = False
 
-    def check_for_distraction(self) -> Optional[DistractionEvent]:
-        """
-        Checks current active window against distraction rules.
-        Uses ActivityWatch if available, otherwise falls back to native Win32.
-        """
-        app_name = ""
-        window_title = ""
-        active_window_info: Optional[WindowInfo] = None
-
-        # 1. Try ActivityWatch
-        aw_event = self.get_current_window_event()
-        if aw_event:
-            app_name = (aw_event.get("app") or "").lower()
-            window_title = aw_event.get("title") or ""
-
-            # Locate corresponding Win32 HWND for screen coordinates and close button
-            active_window_info = WindowManager.find_window_by_match(
-                title_predicate=lambda t: window_title.lower() in t.lower() or t.lower() in window_title.lower(),
-                process_predicate=lambda p: app_name in p.lower(),
-            )
-
-        # 2. Fallback to native Win32 if ActivityWatch is unavailable or HWND not found
-        if not active_window_info and self.config.auto_fallback_to_win32:
-            active_window_info = WindowManager.get_foreground_window_info()
-            if active_window_info:
-                app_name = active_window_info.process_name.lower()
-                window_title = active_window_info.title
-
-        if not active_window_info or not window_title:
-            return None
-
+    def _match_event(self, app_name: str, window_title: str, win_info: WindowInfo) -> Optional[DistractionEvent]:
+        """Evaluates a window title and process name against distraction rules."""
         title_lower = window_title.lower()
+        app_lower = app_name.lower()
 
-        # Check for title keyword matches (e.g. "shorts", "reels", "tiktok")
         for kw in self.config.distraction_keywords:
             if kw.lower() in title_lower:
                 return DistractionEvent(
                     app=app_name,
                     title=window_title,
                     matched_rule=f"keyword '{kw}'",
-                    window_info=active_window_info,
+                    window_info=win_info,
                 )
 
-        # Check for application process matches
         for target_app in self.config.distraction_apps:
-            if target_app.lower() in app_name:
+            if target_app.lower() in app_lower:
                 return DistractionEvent(
                     app=app_name,
                     title=window_title,
                     matched_rule=f"app '{target_app}'",
-                    window_info=active_window_info,
+                    window_info=win_info,
                 )
 
         return None
+
+    def check_for_distraction(self) -> Optional[DistractionEvent]:
+        """
+        Checks current active window and visible background windows against distraction rules.
+        Uses ActivityWatch if available, otherwise falls back to native Win32.
+        """
+        # 1. Try ActivityWatch (non-blocking read of cached event)
+        aw_event = self.get_current_window_event()
+        if aw_event:
+            app_name = (aw_event.get("app") or "").lower()
+            window_title = aw_event.get("title") or ""
+
+            active_window_info = WindowManager.find_window_by_match(
+                title_predicate=lambda t: window_title.lower() in t.lower() or t.lower() in window_title.lower(),
+                process_predicate=lambda p: app_name in p.lower(),
+            )
+            if active_window_info:
+                matched = self._match_event(app_name, window_title, active_window_info)
+                if matched:
+                    return matched
+
+        if not self.config.auto_fallback_to_win32:
+            return None
+
+        # 2. Native Win32: Check foreground window first
+        fg_info = WindowManager.get_foreground_window_info()
+        if fg_info and fg_info.title:
+            matched = self._match_event(fg_info.process_name, fg_info.title, fg_info)
+            if matched:
+                return matched
+
+        # 3. Native Win32: If foreground window is not a distraction, check any visible desktop window!
+        # This catches distraction windows open in the background, on a 2nd monitor, or when user clicks away
+        def title_matches(t: str) -> bool:
+            tl = t.lower()
+            return any(kw.lower() in tl for kw in self.config.distraction_keywords)
+
+        def app_matches(p: str) -> bool:
+            pl = p.lower()
+            return any(a.lower() in pl for a in self.config.distraction_apps)
+
+        matched_window = WindowManager.find_window_by_match(
+            title_predicate=title_matches if self.config.distraction_keywords else None,
+            process_predicate=app_matches if self.config.distraction_apps else None,
+        )
+        if matched_window and matched_window.title:
+            return self._match_event(matched_window.process_name, matched_window.title, matched_window)
+
+        return None