Re-audit round 3: 5 blind reviewers, 15 fixes, +18 tests — converging

Round 3's two HIGHs: _fill_version resolved versions with the LAST
same-title entry's cues (photo-aware lookup existed since round 1 but
this caller never used it), and the round-2 diff rework let an earlier
row's disagreement consume the exact-version copy a later row matched.
Diff claims now settle strongest-first across all rows (exact matches,
then versionless upgrades, then disagreement/second-copy), unvetoed
bare duplicates stay owned per spec, and updates are withheld with a
manual-fix note whenever any copy of the game already carries a version
(the row edit targets by name and could hit the wrong copy).

Also: entry-to-row pairing matches by photo overlap before position
(titles.json order churn from reshoot filenames could swap editions);
BGGQueueTimeout defers a title like a missing token; DismissStore
writes atomically, mutates memory only after the write, and
quarantines a torn file instead of bricking the server; version-picker
page-limit exhaustion stays retryable; verify's copy-count shortfall
reports once per game (the old guard was dead code); the upload log
header is created atomically; transient version-lookup failures record
a retryable version_error, not terminal version_unknown; extract
isolates per-photo failures and salvages JSON followed by prose; a
state revision counter stops stale poll responses reverting decisions;
plus the shared-predicate/fsio/docstring consolidation and CLI wiring,
live-diff, verify-wiring, and search-guard tests.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

scripts/record_fixtures.py

@@ -13,10 +13,12 @@ from __future__ import annotations
 import os
 from pathlib import Path
 
+from fixture_common import FIXTURE_CACHE
+
 from bggpipe.bgg_client import BGGClient
 from bggpipe.resolve import load_titles, resolve_entry
 
-FIXTURE_CACHE = Path("tests/fixtures/bgg_cache")
+FIXTURE_CACHE = FIXTURE_CACHE
 
 
 def main() -> None: