[CLAUDE] Docs: S70 session-end closeout — Harness-9 STATUS/HANDOFF/log + doc-drift 4-flush + agent-memory provenance

- STATUS.md + HANDOFF.md: S70 entry (Harness-9 L2 dark-matter recovery + adap 2-workflow mandate, 0 production code, 3-stage Workflow run-id, 4 over-cap sub <25KB cap, P1 curate-debt CLOSED).
- docs/changelog/sessions/2026-06-17-S70-harness-9-l2-recovery.md: full session log.
- §L.g doc-drift 4-flush (H1 tooling CHỐT): dependency-audit-erp/SKILL.md:153 (65->68) + skills/README.md:20 (Mig 52->53) + :90 (65->68) + session-start.md:44 (58->68).
- §L.d/f agent-memory provenance (H2 harvest GATE CONDITIONAL PASS): 4 curate-log refresh -> S70 (was stale S40/S66/S69) + read-side fix MEMORY.md L5 header -> _INDEX.md (3/4 had 0 refs; reviewer already had it). All 4 MEMORY.md still <25KB auto-inject cap.

State unchanged (0 production code): Mig 53 / 88 tables / 306 test / 68 gotchas / menu 54 / bundle BgNCjwsG-CBvh0vtf.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

.claude/agent-memory/implementer-backend/MEMORY.md

@@ -89,4 +89,4 @@ UI `disabled={!canX}` + BE helper `EnsureCanXAsync(id, userId)` throw 403 (NOT i
 
 ## 🔄 Curate trigger
 - >~30KB → archive recent → L2 `archive/<period>.md`. Stale >3mo → remove.
-- **Last curate: 2026-05-29 S40 em main proxy** (30.9→~18KB): **dedup split** — removed FE patterns (5/6/13/14/15/16-bis → implementer-frontend) + test patterns (10/11/12 → test-specialist), condensed Pattern 12-bis/12-ter, refreshed stale (104/111→130 test, Opus 4.7→4.8 model). BE patterns 1-4/7-9/12-bis/12-ter foundation preserved. Prev: S34 q3 · S32 q2 · S22 q1.
+- **Last curate: 2026-06-17 S70 Harness-9 (em-main + Stage-B workflow)** (33.2→17.4KB): L2 dark-matter recovery — 14 Recent-activity entries (S55→S35) → NEW `archive/2026-06.md` + `_INDEX.md` (substring sha-keyed) + `2026-0{5,6}.gist.md` (distill-gen:1). 0-byte-loss md5 byte-exact (Stage C audit CONCERN → read-side-gap MEMORY-L5→_INDEX fixed). _(cosmetic: 2 curate-meta lines carry `S?` worker-label.)_ Prev: S40 (30.9→~18KB dedup-split BE/FE/test) · S34 q3 · S22 q1.