audit-FULL: port phases 1/2/5/7 — only acceptance.ts (TS-only) remains skipped

Closes 4 of the 5 phases the initial audit-FULL port left as
deferred. The pattern: most "deferred" phases didn't actually need
the un-ported Rust pieces — they were observer-mode by design and
just needed to read existing on-disk artifacts.

Phase 1 (schema validators) → ported via exec.Command:
  Invokes `go test ./internal/distillation/...` — the Go equivalent
  of Rust's `bun test auditor/schemas/distillation/`. New
  GoTestModule field on AuditFullOptions controls the package
  pattern; empty disables the invocation (test mode, prevents
  recursion when audit-full is invoked from inside `go test`).

Phase 2 (evidence materialization) → ported as observer:
  Reads data/evidence/ directly and tallies rows + tier-1 source
  hits. Doesn't re-run the materializer (which is Rust-side TS).
  Emits p2_evidence_rows + p2_evidence_skips metrics matching
  Rust shape — drop-in audit_baselines.jsonl entries possible.

Phase 5 (run summary) → ported as observer:
  Reads reports/distillation/{run_id}/summary.json + 5 stage
  receipts. Validates schema_version=1, run_hash sha256, git_commit
  40-char hex, all stage receipts decode as JSON. Full schema
  validation (StageReceipt schema) is intentionally NOT ported —
  it would require porting the TS schemas/distillation/ validators
  in full; basic shape checks catch the load-bearing invariants.

Phase 7 (replay log) → ported as observer:
  Reads data/_kb/replay_runs.jsonl, validates last 50 rows parse
  as JSON. Skips the live-replay invocation that Rust's phase 7
  also does — porting Rust replay.ts is substantial and not in
  scope. The "log shape sanity" check is what audit-full actually
  needs; the live invocation is a separate concern.

Phase 6 (acceptance gate) — STILL SKIPPED:
  Rust acceptance.ts is a TS-only fixture harness with bun-specific
  deps. Porting the fixtures (tests/fixtures/distillation/acceptance/)
  + the 22-invariant runner to Go is an ADR-worth undertaking.
  Documented in the header comment.

Live-data probe (against /home/profit/lakehouse):
  Skips count: 4 → 1 (only phase 6).
  Required checks: 6/6 → 12/12 PASS.
  New metric: p2_evidence_rows=1055, BYTE-EQUAL to the Rust
  pipeline's collect.records_out from the latest summary.json.
  Cross-runtime parity now extends across phases 0/1/2/3/4/5/7.

6 new tests:
- TestPhase2_EvidenceTallyFromOnDisk: row + tier-1-hit tallying
- TestPhase5_FullSummaryFlow: complete run-summary fixture passes
- TestPhase5_ShortRunHashCaught: bad run_hash fails required check
- TestPhase7_ReplayLogReadsFromDisk: row-count reporting
- TestPhase7_MalformedTailRowsCaught: structural parse failure
- TestRunAuditFull_FullFixtureFlow updated to seed evidence/ +
  reports/distillation/ for the phases now wired.

Cleanup: removed local sortStrings helper (replaced with sort.Strings
now that `sort` is imported for phase 5's mtime-sort).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

reports/cutover/SUMMARY.md

@@ -9,6 +9,7 @@ what's safe to flip. Append a row when a new endpoint clears parity.
 | `embed` (forced v2-moe) | 2026-04-30 | `/ai/embed`              | `/v1/embed`              | ✅ PASS 5/5 cos=1.000 | bit-identical with `model=nomic-embed-text-v2-moe` forced both sides — both Ollamas have the model |
 | `audit_baselines.jsonl` | 2026-05-01 | `data/_kb/audit_baselines.jsonl` | `internal/distillation` `LoadLastBaseline` / `AppendBaseline` / `BuildAuditDriftTable` | ✅ PASS round-trip | Live Rust file (7 entries) parses + round-trips byte-equal; lineage drift table fires correctly on zero-baseline metrics. See `audit_baselines_roundtrip.md`. |
 | `audit-FULL` (phases 0/3/4) | 2026-05-01 | `scripts/distillation/audit_full.ts` | `cmd/audit_full` + `internal/distillation` `RunAuditFull` | ✅ PASS metric-equal | Go-side run against live Rust root: all 8 ported metrics (p3_*, p4_*) byte-equal to the last Rust-emitted `audit_baselines.jsonl` entry. 6/6 required checks pass. 4 phases (1, 2, 5, 6, 7) deferred — depend on broader Rust-side pieces (materializer / replay / run-summaries) not yet ported. See `audit_full_go_vs_rust.md`. |
+| `audit-FULL` (phases 0/1/2/3/4/5/7 — observer mode) | 2026-05-01 | `scripts/distillation/audit_full.ts` | `cmd/audit_full` + `internal/distillation` `RunAuditFull` | ✅ PASS 12/12 | Skips reduced from 4 → 1: phase 1 invokes `go test`, phases 2/5/7 read existing artifacts as observers (no live materializer/replay invocation). Only phase 6 (TS-only acceptance harness) remains skipped. `p2_evidence_rows=1055` matches Rust `summary.json` `collect.records_out=1055` byte-equal. Updated `audit_full_go_vs_rust.md`. |
 
 ## Wire-format drift catalog