When a staged single-file candidate carries a re-identify hint, the worker builds
the identification straight from the user-chosen release (album_id/source) and
skips the guessing tiers — so the ambiguity that mis-filed the track is gone. No
hint → byte-identical to before (the lookup returns (None, None), fail-safe on any
DB error). A hinted import auto-processes (explicit user choice), still gated on the
global auto_process pref.
After the re-import lands, _finalize_rematch_hint consumes the hint and (if replace
was chosen) deletes the old row + file via delete_replaced_track — deferred to
success so a failed import never loses the original. Safe by construction: unlink
only when no surviving row references the file, and the modal never offers the
track's current release so old path != new path.
All hint logic lives in auto_import_worker.py + the pure rematch_hints helpers —
pipeline.py / side_effects.py untouched. 18 tests; full auto-import suite green.
A single-use, user-designated 'which release does this track belong to' answer.
Written when the user picks a release in the Re-identify modal and the file is
staged; the import flow will read it at the top of matching and consume it.
- rematch_hints table (additive, IF NOT EXISTS + indexes) keyed on staged_path
with content_hash as a rename-proof fallback.
- core/imports/rematch_hints.py: pure DB seam over an injected cursor
(create/find/consume/list) + a cheap size+head+tail file fingerprint.
- exempt_dedup baked into the hint (a re-identify must bypass dedup-skip);
replace_track_id carried for deferred post-success cleanup.
Inert until wired (Phase 5) — nothing calls it yet. 9 seam tests.
