* Decouple media lookup from play_media service
* More explicit input/search validation, cleanup, more tests
* Minor cleanup
* Normalize media_type string in lookup call
* Move key lookup, add tests via service calls
* Always allow play_media service calls
* No need to pass arguments to nested functions
* Improve Plex debounce/throttle logic
* Use Debouncer helper, rewrite affected tests
* Mock storage so files aren't left behind
* Don't bother with wrapper method, store debouncer call during init
* Test cleanup from review
* Don't patch own code in tests
* Debounce calls to Plex server
* Simplify debounce by recommendation
* Update tests to handle debounce
* Test debouncer, fix & optimize tests
* Use property instead
