Audible: fall back to a title/author search when a tagged ASIN is dea…

[Mancolt]

…d or names another book

A file tagged with an ASIN Audible has no product for (skeleton {asin, asset_details, is_vvab}: a withdrawn or duplicate listing), or one that fails the title/author gate, was left unmatched: the per-ASIN endpoint ignores the title/author parameters and nothing else was tried. Seen 2026-09-22 with "This Book Made Me Think of You" tagged B0G2TK17DS (dead on every marketplace); the ABR request was B0FBHZK5V7.

• getAudibleBooks: the attempt ladder now lives in _runAudibleAttempts, which reports the ASIN it was directed at and whether Audible answered that lookup. No match + answered ASIN -> rerun the ladder with the ASIN blanked (noAsin also strips a [bracketed] release-name ASIN), starting from the file's original tag title (the legacy rung's getAltTitle mutation must not leak into the search). Same gates and duration check as a tagless file. A lookup that failed (outage, timeout) does not fall back: the tag may be right and a search could file another edition for good; the book stays unmatched for the next run, as before.
• matchAttempt is prefixed asin-fallback: so the JSON run log can tell such a match apart.
• Interactive mode dropped: a skeleton answer was auto-accepted as the lone result and would have filed the book under an empty title.
• bestAudibleMatch is reset at the start of a search; _rankAudible returns it as it stands, so a stale value from an earlier search could have masked a miss.

Tests: 9 new cases (dead tag, live-but-wrong tag, gates still apply, live tag costs no extra query, attempt label, title restore, bracket ASIN, interactive skeleton, failed lookup, stale match). Live --dry-run on the real file: fallback finds B0FBHZK5V7, rate 84, duration difference 0 min. Replay of the 1602-book corpus against main: 3 matches gained (Takedown -> B01FEAW1SE), none lost, no target-path or OPF change.

Review findings addressed: correctness (title leak, bracket ASIN, interactive skeleton, stale match, attempt label, replay) and security (fail-open on a transient Audible error).