Add functionality for deduplicating tags, parsing tag strings, and managing tag IDs within the PhotoTagger GUI. Introduce a tag management dialog for adding, editing, and deleting tags, ensuring a user-friendly interface for tag operations. Update the internal logic to utilize tag IDs for improved performance and reliability, while enhancing the README to reflect these significant changes in tag handling and management.
Enhance the tagging system by introducing a normalized structure with a separate `tags` table for unique tag definitions and a `phototaglinkage` table to manage the many-to-many relationship between photos and tags. Update the logic for inserting and retrieving tags to improve data integrity and prevent duplicates. Additionally, update the README to reflect these changes and document the new folder view features.
Introduce a new tag management interface with a file explorer-like design, allowing users to manage photo tags efficiently. Features include multiple view modes (list, icons, compact), resizable columns, and column visibility management through a right-click context menu. Update README to document the new functionality and usage instructions.
