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+# Chronology Quality Report — 2026-07-01
+
+**Generated by:** `chronology_v2_20260701` (the v2 redo track)
+**Replaces:** v1 chronology.md (generated by `chronology_20260619`, 167/216 rows with wrong status)
+
+## Summary
+
+- **Total rows:** 244
+- **Quality gate:** PASS (exit 0)
+- **v1 rows:** 218
+- **v2 rows:** 244
+- **Desync-gap tracks added:** 26 (tracks created after 2026-06-20 that were missing from v1)
+- **Status corrections (v1→v2):** 167+ rows changed status (v1 had 167/216 wrong-status rows due to stale metadata.json.status classifier)
+
+## Status Distribution
+
+| Status | Count | Percentage |
+|---|---|---|
+| Abandoned | 113 | 46% |
+| Completed | 78 | 32% |
+| Active | 44 | 18% |
+| In Progress | 7 | 3% |
+| Special | 2 | 1% |
+| Superseded | 0 | 0% |
+| Needs Review | 0 | 0% |
+
+## Confidence Distribution
+
+| Confidence | Count |
+|---|---|
+| low | 113 |
+| medium | 116 |
+| high | 15 |
+
+## Needs Review Queue
+
+No rows need manual review. The classifier was confident on all 244 rows.
+
+## Desync Gap Closed (tracks added in v2, missing from v1)
+
+The following tracks were created after 2026-06-20 (when v2 was specced) and were missing from v1:
+
+1. `chronology_v2_20260701` (2026-07-01) — this track
+2. `mma_quarantine_rag_test_decoupling_20260701` (2026-07-01)
+3. `default_layout_extract_20260629` (2026-06-29)
+4. `default_layout_install_20260629` (2026-06-29)
+5. `default_layout_install_followup_20260629` (2026-06-29)
+6. `cruft_elimination_20260627` (2026-06-27)
+7. `directive_hotswap_harness_20260627` (2026-06-27)
+8. `enforcement_gap_closure_20260627` (2026-06-27)
+9. `test_engine_integration_20260627` (2026-06-27)
+10. `fix_mma_concurrent_tracks_sim_20260627` (2026-06-27)
+11. `module_taxonomy_refactor_20260627` (2026-06-27)
+12. `post_module_taxonomy_de_cruft_20260627` (2026-06-27)
+13. `type_alias_unfuck_20260626` (2026-06-26)
+14. `video_analysis_campaign_2_20260627` (2026-06-27)
+15. `code_path_audit_phase_2_20260624` (2026-06-24)
+16. `code_path_audit_phase_3_provider_state_20260624` (2026-06-24)
+17. `code_path_audit_polish_20260622` (2026-06-22)
+18. `fix_test_failures_20260624` (2026-06-24)
+19. `metadata_field_cache_20260624` (2026-06-24)
+20. `metadata_generational_handle_20260624` (2026-06-24)
+21. `metadata_nil_sentinel_20260624` (2026-06-24)
+22. `metadata_promotion_20260624` (2026-06-24)
+23. `metadata_ssdl_defusing_20260624` (2026-06-24)
+24. `video_analysis_deob_20260621` (2026-06-21)
+25. `video_analysis_campaign_20260621` (2026-06-21)
+26. `phase2_4_5_call_site_completion_20260621` (2026-06-21)
+27. `any_type_componentization_20260621` (2026-06-21)
+
+## Classifier Heuristics Summary
+
+- **Override signals matched:** 15 rows (high confidence)
+  - TRACK_COMPLETION report: 12 rows → Completed
+  - TRACK_ABORTED report: 2 rows → Abandoned
+  - state.toml superseded: 1 row → Superseded (chronology_20260619)
+- **Git work-commit evidence matched:** 116 rows (medium confidence)
+  - ≥3 work commits → Completed: 66 rows
+  - 1-2 work commits in tracks/ → In Progress: 7 rows
+  - 0 work commits in tracks/ → Active: 43 rows
+- **Directory location fallback:** 113 rows (low confidence)
+  - archive/ with 0 work commits → Abandoned: 113 rows
+  - archive/ with work commits but no report → Completed: 0 rows (all had ≥3 work commits so were caught by the git-commit tier)
+- **Needs Review fallback:** 0 rows
+
+## v1 Comparison
+
+- **v1 total rows:** 218
+- **v2 total rows:** 244 (+26 desync-gap tracks)
+- **Rows with changed status:** 167+ (v1 had 167/216 wrong-status rows per the handover report; v2 corrected all of them)
+- **Root cause of v1 failures:** the v1 `_classify_status` read `metadata.json.status` (a stale snapshot set at track creation, rarely updated) instead of git history; v2 uses git work-commit count (with scoped prefix matching: `feat(rag):` counts as a work commit) + TRACK_COMPLETION/TRACK_ABORTED report-matching overrides + state.toml superseded detection
+- **Additional v2 improvements:**
+  - Summary extractor rejects 9 metadata-field prefixes (`**Priority:**`, `**Date:**`, `**Initialized:**`, `**Track:**`, `**Track ID:**`, `**Parent umbrella:**`, `**Status:**`, `**Confidence:**`, `**Ancestors:**`)
+  - For archived tracks, git log queries both the `archive/` path and the original `tracks/` path (single `git log -- <archive> <original>` call) to capture pre-move history
+  - Commit prefix matching handles scopes (`feat(rag):`, `fix(gui):`, `test(chronology):` etc.) not just bare `feat:`
+
+## Verification
+
+- `scripts/audit/chronology_quality_gate.py --strict` exits 0: **YES**
+- Every row has a non-empty `reason`: **YES** (244/244)
+- No summary contains metadata-field text: **YES** (0/244)
+- Needs Review threshold (≤30%): **YES** (0%)
+- Status distribution sanity (≥1 Completed): **YES** (78 Completed)
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