Implemented directory management and improved TravelDiary and Photo handling logic.

- Added `DirectoryManager` utility for consistent directory operations.
- Introduced directory name sanitization and uniqueness enforcement for `TravelDiary`.
- Updated `TravelDiaryService` with enhanced creation, update, and deletion workflows, including filesystem management.
- Improved `PhotoService` to hash files, copy photos to specific diary directories, and manage updates safely.
- Refined error handling and cascaded changes across related entities (e.g., `Entry` relationships).

src/pilgrim/application.py

@@ -1,47 +1,18 @@
 from pilgrim.database import Database
 from pilgrim.service.servicemanager import ServiceManager
 from pilgrim.ui.ui import UIApp
-from pathlib import Path
-import os
-import sys
+from pilgrim.utils import DirectoryManager
 
 
 class Application:
     def __init__(self):
-        self.config_dir = self._ensure_config_directory()
+        self.config_dir = DirectoryManager.get_config_directory()
         self.database = Database()
         session = self.database.session()
         session_manager = ServiceManager()
         session_manager.set_session(session)
         self.ui = UIApp(session_manager)
 
-    def _ensure_config_directory(self) -> Path:
-        """
-        Ensures the ~/.pilgrim directory exists and has the correct permissions.
-        Creates it if it doesn't exist.
-        Returns the Path object for the config directory.
-        """
-        home = Path.home()
-        config_dir = home / ".pilgrim"
-        
-        try:
-            # Create directory if it doesn't exist
-            config_dir.mkdir(exist_ok=True)
-            
-            # Ensure correct permissions (rwx for user only)
-            os.chmod(config_dir, 0o700)
-            
-            # Create an empty .gitignore if it doesn't exist
-            gitignore = config_dir / ".gitignore"
-            if not gitignore.exists():
-                gitignore.write_text("*\n")
-            
-            return config_dir
-            
-        except Exception as e:
-            print(f"Error setting up Pilgrim configuration directory: {str(e)}", file=sys.stderr)
-            sys.exit(1)
-
     def run(self):
         self.database.create()
         self.ui.run()