v3.0.1: Bug Fixes & Housekeeping

A round of small fixes and build cleanup.

Added

• .dockerignore: reduces the Docker build context.
• apprise in requirements-dev.txt: so the notification tests run in CI.
• Test coverage: 5 unit tests covering _notify paths.

Fixed

• Startup crash: entrypoint.sh crashed when PUID/PGID matched an existing system UID/GID.
• File stability timeout: wait_for_file_ready waited up to 2 s less than configured on odd timeout values.
• Notification defaults: _notify used hardcoded fallback values instead of DEFAULT_CONFIG.

Changed

• Comic logging: comic conversions now log STARTING when conversion begins, matching the book log style.