Switch from mkdocs gh-deploy to actions/deploy-pages for cleaner
integration with GitHub's deployment UI and permissions model.

)

Keys like 'exclude', 'leaving_soon', and 'sort' only work when nested
under each library. When placed at root level they are silently ignored,
which can lead to exclusion rules not being applied. Add validation that
logs a WARNING explaining the misconfiguration.

Closes #227

… death row logging (#229)

* fix(media_cleaner): fix watch data matching, collection creation, and death row logging

Fix title_and_year_match rejecting exact year matches due to inverted
year != check. The fallback watch data matcher only matched when years
differed by exactly 1, causing items with exact year matches to appear
unwatched and become deletion candidates.

Fix get_or_create_collection crashing when called with no items after
Plex auto-removes an empty collection. Return None instead of calling
createCollection with an empty items list.

Improve death row logging to explain why items were filtered out
(thresholds, exclusions, or watch activity since tagging).

Refs #227

* fix(tests): update integration test for get_or_create_collection signature

The integration test was asserting the old call signature without the
items kwarg, causing CI failure.

Wrap movie/show deletion in _process_death_row with try/except so that
a single API failure no longer breaks the entire deletion loop. Failed
items are logged and retried on the next run.

Closes #227