Update window title handling and ensure consistent version retrieval in configuration

src/webdrop_bridge/config.py

@@ -137,7 +137,22 @@ class Config:
                 log_file = Config.get_default_log_path()
 
         app_name = data.get("app_name", "WebDrop Bridge")
-        window_title = data.get("window_title", f"{app_name} v{__version__}")
+        stored_window_title = data.get("window_title", "")
+        
+        # Regenerate default window titles on version upgrade
+        # If the stored title matches the pattern "{app_name} v{version}", regenerate it
+        # with the current version. This ensures the title updates automatically on upgrades.
+        import re
+        version_pattern = re.compile(rf"^{re.escape(app_name)}\s+v[\d.]+$")
+        if stored_window_title and version_pattern.match(stored_window_title):
+            # Detected a default-pattern title with old version, regenerate
+            window_title = f"{app_name} v{__version__}"
+        elif stored_window_title:
+            # Custom window title, keep it as-is
+            window_title = stored_window_title
+        else:
+            # No window title specified, use default
+            window_title = f"{app_name} v{__version__}"
 
         return cls(
             app_name=app_name,
@@ -178,12 +193,10 @@ class Config:
 
         # Extract and validate configuration values
         app_name = os.getenv("APP_NAME", "WebDrop Bridge")
-        # Version comes from __init__.py (lazy import to avoid circular imports)
-        if not os.getenv("APP_VERSION"):
-            from webdrop_bridge import __version__
-            app_version = __version__
-        else:
-            app_version = os.getenv("APP_VERSION")
+        # Version always comes from __init__.py for consistency
+        from webdrop_bridge import __version__
+        app_version = __version__
+        
         log_level = os.getenv("LOG_LEVEL", "INFO").upper()
         log_file_str = os.getenv("LOG_FILE", None)
         allowed_roots_str = os.getenv("ALLOWED_ROOTS", "Z:/,C:/Users/Public")