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docs(report): add CHRONOLOGY_QUALITY_20260701 (v2 quality report with status distribution + Needs Review queue)

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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| Superseded | 0 | 0% |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)