feat: merge UI vault settings with environment config, improve French UI text clarity, and enhance hidden files whitelist styling with hover effects and empty state

backend/indexer.py

@@ -329,6 +329,18 @@ async def build_index(progress_callback=None) -> None:
     vault_config.clear()
     vault_config.update(load_vault_config())
     
+    # Merge vault_settings (from UI) with vault_config (from env vars)
+    from backend.vault_settings import get_all_vault_settings
+    saved_settings = get_all_vault_settings()
+    for vault_name, config in vault_config.items():
+        if vault_name in saved_settings:
+            settings = saved_settings[vault_name]
+            # Override with saved settings if present
+            if "includeHidden" in settings:
+                config["includeHidden"] = settings["includeHidden"]
+            if "hiddenWhitelist" in settings:
+                config["hiddenWhitelist"] = settings["hiddenWhitelist"]
+    
     global _index_generation
     with _index_lock:
         index.clear()