Refs #5
- Add runtime template_id dedup in lookup_v4_match_with_fallback with
first-occurrence reservation; duplicate ranks become audit evidence,
not new fallback candidates.
- Add Step 9 candidate_evidence as the primary per-unit evidence field
while keeping fallback_chain as a compat alias for legacy readers.
- Add Step 20 fallback_selection_count and selection_paths derived from
comp_debug.v4_fallback_summary with defensive defaults; top-level
overall enum unchanged.
- Tighten synthetic fallback tests for duplicate handling (rank-1 reject A
+ rank-2 use_as_is A + rank-3 distinct B → rank-3 wins) and add tests
for candidate_evidence + alias equality and Step 20 qualifier presence
with defensive defaults.
- Verify with pytest (10 passed) and smoke_frame_render --self-check
(11/11 partials, IMP-04 F17 calibration intact).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
kyeongmin
21476ae000