Two issues behind #897:
1) Discoverability — the "Ignored" management modal (view/un-ignore/clear-all,
shipped with #874) was only reachable from the wishlist *overview modal*
footer, which most users never open. Add the same button to the wishlist
page toolbar next to Cleanup / Clear All, wired to openWishlistIgnoreModal().
2) Manual re-add silently blocked (carlosjfcasero) — the album-modal "add to
wishlist" endpoint passes source_type=album, but the ignore gate only
bypasses+clears for source_type=manual, so re-adding a previously-cancelled
track failed. We cannot just send manual: source_type drives Albums/Singles
categorisation and repair_worker legitimately uses album too. Thread an
explicit user_initiated flag (db.add_to_wishlist -> service -> album route)
that bypasses+clears the ignore while preserving the real source_type.
Regression test pins both: an automatic source_type=album add stays blocked,
the user_initiated add goes through, clears the ignore, and keeps source_type=album.
15ea87a154