The folder column in anime_series stores the relative folder name
(e.g. 'Beyblade Burst (2016)'), not an absolute path. The old
delete_series code called os.path.abspath(folder_path) directly,
which joins a relative path against the process current working
directory. Inside the container the FastAPI app runs with CWD=/app
while the anime directory is /data, so 'Beyblade Burst (2016)'
resolved to '/app/Beyblade Burst (2016)' and the is_safe_path check
correctly (but unhelpfully) flagged it as outside the /data base,
skipping the folder delete while still removing the row.
Fix: resolve relative folder paths against the configured anime
directory before validating against the base. Absolute paths still
work unchanged.
Also harden is_safe_path() the same way so a relative target is
treated as relative to base_path, not to the process CWD. Path
traversal ('../etc/passwd') is still rejected.
Adds two regression tests:
- is_safe_path with chdir to '/' and relative target resolves
against the base
- delete_series with chdir to '/', relative folder in DB,
succeeds and removes the folder
- Add sanitize_folder_name utility for filesystem-safe folder names
- Add sanitized_folder property to Serie entity
- Update SerieList.add() to use sanitized display names for folders
- Add scan_single_series() method for targeted episode scanning
- Enhance add_series endpoint: DB save -> folder create -> targeted scan
- Update response to include missing_episodes and total_missing
- Add comprehensive unit tests for new functionality
- Update API tests with proper mock support
