[CLAUDE] Workflow: adopt presence-not-age selector guardrail + rec-3 hmw.js STOP-HARD (S115)

Adopt AI_INFRA 2026-07-13 broadcast ab6c387e (presence-not-age selector,
type=update) + directed 6c32df89 rec-3, via /fable-clone 5-lane reviewer
ensemble (wf_b621aac4-f0b) -> spec -> /fable-real deep-pass (PASS-WITH-FIXES,
M1+M2 applied) -> HMW execute (em-main solo; governance single-writer D9).

D2 (hmw.js): unknown-role fail-soft-WARN -> up-front STOP-HARD throw (before
  parallel; preserves null/'' role-less inherit-lead path). node --check + stub
  7/7. Doc-sync 5 live lines (ultra-on/README/harness-11-engine/runbook).
D3 (memory-archive-gate.ps1): value_protect advisory-flag -> pre-selection
  HARD-SKIP (value-primary; heading-only spans; non-contiguous byte accum) +
  value-floor WARN. Fault-inject ALL PASS + real regression A7 242/242. DRY-RUN.
D1 (reinject-ledger.md): presence re-verify stamp + 3 honest-notes + BUILD-GAP.

Re-verify: reinject (i) + MFE age-band (iii) already COMPLIANT; only the
archive-gate age-trace needed hardening. D3 = defense-in-depth codify, NOT
leak-closure (9-token grep unchanged; em-main value-scan stays the guarantee).

adap-report + email AI_INFRA (8b9dc5165d5a); inbox STAGE-2 processed. No new
User-Mark (codify-only). #53 garble x1 (lane-4) recovered from disk, 0 loss.

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

.claude/governance/reinject-ledger.md

@@ -36,3 +36,22 @@
 ---
 
 > **Nấc honest:** ledger = **convention** (em-main append tay, git-tracked audit-trail — KHÔNG OS-hook auto-write, nhất-quán CAVEAT engine "no-OS-hook"). Tín-hiệu floor-rot feed = **mechanized** (`mfe-eval.ps1` age-band + `memory-selfimprove-audit.ps1`). Detection per-item-L1-presence hiện **partial** (MFE age-band chỉ đo marks-có-date; AS/guard/gotcha mang session-ref chưa có pass so-từng-item-trong-L1 — xem §I honest nấc + CAVEAT C4 self-blind-spot).
+
+---
+
+## Re-verify: presence-not-age selector (broadcast `ab6c387e`, adopt S115 · 2026-07-13)
+
+> AI_INFRA broadcast `ab6c387e` (type=**update**) — re-verify the memory refine-step **selector** decides by PRESENCE/COVERAGE, not AGE. Verdict per floor:
+
+- **(i) Reinject = MET (presence-based).** Trigger = **floor-rot** `"ĐÃ-từng-ở-L1 ∩ CÒN-giá-trị ∩ RỚT-khỏi-L1"` (coverage-gap, this file `:12`) = the broadcast (i) condition "should be present but is missing." Age plays no part in *what-to-reinject*. The CG-1 `reinjected` session column is a **reinject-event rate-limiter / loop-breaker (≤1 per N=3 sessions), NOT an age-rank** → OK per broadcast (iii) carve-out ("date used only for last-seen/loop-breaking = OK"). Drop-date test: dropping the column changes only the rate-limit/termination count, never the selection.
+- **(iii) MFE age-band = FLAG-only (COMPLIANT).** `mfe-eval.ps1` `$oldN` is computed then `Write-Host`-printed ("KEPT status-driven age-blind") with **no downstream consumer**; the denominator is gated by STATUS, not date. Drop-date test: changes one diagnostic count, not the denominator / FIT / Goodhart / any selection.
+- **(ii)+(iii) Archive-gate = RED-FLAG surfaced → HARDENED (D3, S115).** The planner's oldest-by-position base ordering tripped the (iii) self-check; fixed in `scripts/memory-archive-gate.ps1` by promoting `value_protect` from an advisory post-hoc flag to a **pre-selection HARD-SKIP** (value-primary; position = within-low-value tiebreak) + a value-floor WARN. Fault-injection-verified (protected-not-drained + permutation-invariant + value-floor). See `memory-budget.json:value_protect._note`.
+
+**BUILD-GAP (honest, disclosed):** mechanized **per-item-L1-presence** detection is still PARTIAL — the MFE age-band counts *present* marks (by date), not per-item *drops*; AS/guard/gotcha carrying session-refs have no per-item-in-L1 pass yet. So reinject-detection stays **convention + em-main judgement**, not full mechanization (do NOT overclaim). Consistent with §I honest nấc + CAVEAT C4.
+
+**3 honest-notes (broadcast §5 — MANDATORY):**
+1. Basis = **ONE** occurrence already fixed elsewhere → **proactive-prevention**, NOT a spreading SE incident.
+2. **SPECIFIC-APPLICATION**, not a new rule — SE reinject + MFE age-band were already presence/flag-based (quick re-verify, no change); only the archive-gate needed hardening.
+3. Floor = **FUNCTION not FORM** — implemented in SE's own script shape; no hub structure/filenames copied.
+
+> **Provenance:** `/fable-clone reviewer` 5-lane ensemble (`wf_b621aac4-f0b`) → spec `runs/2026-07-13-presence-not-age-adopt/spec-presence-not-age-adopt-13-07-2026.md` → `/fable-real reviewer` deep-pass (PASS-WITH-FIXES; M1+M2 applied) → HMW execute D1/D2/D3. Applies existing mark `RC-…10-29-11` (age=false-proxy) to the selector layer; codify-only (no new mark).