feat(config): wire up wallpapers_dir, osd, window_switcher, global_menu settings

- wallpapers_dir: read from config, fallback ~/Pictures/Wallpapers
- osd: skip show_audio_osd/show_brightness_osd when disabled
- window_switcher: skip show_switcher when disabled
- global_menu_cache_enabled: bypass GTK class cache when false
- global_menu_method: control discovery strategies (auto/hyprland/dbus)

All keys added to constants.py defaults, settings UI, and config.toml

src/window/globalmenu/detection.py

@@ -222,9 +222,15 @@ def executable_gtk_class(executable: str | None) -> str | None:
 
     cache = _load_cache()
     key = f"{path}"
-    cached = cache.get(key)
-    if cached and cached.get("mtime") == mtime:
-        return cached.get("class")
+
+    from services.config import get_config
+
+    use_cache = get_config("global_menu_cache_enabled", True)
+
+    if use_cache:
+        cached = cache.get(key)
+        if cached and cached.get("mtime") == mtime:
+            return cached.get("class")
 
     needed = _transitive_needed(path)
     if GTK4_SONAME in needed:
@@ -234,6 +240,7 @@ def executable_gtk_class(executable: str | None) -> str | None:
     else:
         klass = None
 
-    cache[key] = {"mtime": mtime, "class": klass}
-    _save_cache(cache)
+    if use_cache:
+        cache[key] = {"mtime": mtime, "class": klass}
+        _save_cache(cache)
     return klass

src/window/globalmenu/service.py

@@ -619,11 +619,20 @@ class GlobalMenuService(Service):
             if target_pid <= 0:
                 return None
 
-            strategies = [
-                self._find_registry,
-                self._find_registrar,
-                self._find_fallback_scan,
-            ]
+            from services.config import get_config
+
+            method = get_config("global_menu_method", "hyprland")
+
+            strategies = []
+            if method in ("hyprland", "auto"):
+                strategies.extend(
+                    [
+                        self._find_registry,
+                        self._find_registrar,
+                    ]
+                )
+            if method in ("dbus", "auto"):
+                strategies.append(self._find_fallback_scan)
 
             for strategy in strategies:
                 result = strategy(wm_class, target_pid)