- add neutral wishlist payload helpers while keeping legacy Spotify aliases
- route wishlist removal and classification through generic track data
- keep API and service compatibility for existing callers
- add module-level loggers for the wishlist package instead of threading the web server logger through runtime objects
- default wishlist helper runtimes and cleanup helpers to their package logger while still allowing test overrides
- keep web_server.py as a thin caller that no longer injects its logger into wishlist flows
- add core/wishlist as the home for wishlist payload, resolution, state, processing, reporting, and selection helpers
- move wishlist-specific tests into tests/wishlist alongside the new package layout
- keep web_server.py and the import/search callers as thin adapters for now