Replaces the v1 plan (10 phases, single-stage cross-check) with an 11-phase
plan that executes the v2 spec's git-history classifier + 3-stage cross-check
+ 30% quality gate. Plan Phase 2 = Spec Phase 2 part 1; renumbering shifts
from Plan Phase 4 onwards (per the spec-vs-plan mapping in the summary table).
11 phases, 28 tasks, 4 hard pause points (Plan Phase 6 quality gate, Plan
Phase 7 Tier 1 review, Plan Phase 10 user sign-off, plus the Plan Phase 6
ABORT fallback to manual review). TDD red+green cycles for Phases 2-4 (8
new tests for _classify_status + 4 for extract_summary + 3 for format_markdown
+ 5 for the quality gate).
Test runner: scripts/run_tests_batched.py (per Tier 2 sandbox rule #1).
Throw-away scripts: scripts/tier2/artifacts/chronology_20260619/ (rule #4).
Default branch: master (rule #2). Line endings: preserve existing (rule #3).
10 phases, 29 tasks, all worker-ready (WHERE / WHAT / HOW / SAFETY /
COMMIT / GIT NOTE per task):
Phase 1: Data extraction audit + draft helper script (FR5; TDD)
Phase 2: Generate conductor/chronology.md.draft
Phase 3: Prune [x]/[shipped] entries from conductor/tracks.md (FR2)
Phase 4: Add 3-step archiving convention to conductor/workflow.md (FR3)
Phase 5: Write docs/reports/CHRONOLOGY_MIGRATION_20260619.md (FR4)
Phase 6: User review of draft (GATE)
Phase 7: Promote draft to canonical chronology.md
Phase 8: Per-row cross-check (FR6 HARD GATE; 9 batches of ~20 rows)
Phase 9: Completeness check (FR6 HARD GATE; folder set vs row set)
Phase 10: User sign-off + end-of-track report (FR6 HARD GATE)
The cross-check (Phase 8) is the dominant cost. Per the user directive
2026-06-19, EVERY SINGLE ENTRY must be cross-checked. The plan batches
the work into 9 commits for review ergonomics; no batch is 'sample-based'
or 'looks right' -- each row's 5 fields (date, ID, status, summary,
range) are verified independently per FR6.
All 12 VCs from the spec are addressed in the plan's 'Verification
Criteria Recap' section.
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