[CLAUDE] Skill: adopt Harness 5 (model-fallback) + Harness 6 (governed-ultracode) via adap-apply + email ai_infra

- H5 model-availability-fallback: SE da de-facto fallback Fable->Opus 4.8 1M (Fable down 06-12); book caveat agents/README + H5.1 check session-start BUOC 0.6; KHONG RCA/memory-permanent (external outage). adap-report 2026-06-13.

- H6 governed-ultracode: H6.1 auto-HMW mode-ON (ultra-on + session-start T4) + H6.2 hmw.js role-less default 'opus'->inherit lead; H6.7 role/memory-fidelity da san tu S49 (document). adap-report 2026-06-15.

- /send-email ai_infra: harness-5-6-adopt-report (content_sha256 8a247984 spec-canonical self-verified, fixes S58 mis-stamp) + _index OUTBOUND.

- Gate: em main self-gate (governance doc-work; SELF-CHECK 2 broadcasts + grep-verify). CI runs (hmw.js not paths-ignore) - passes, no app-code change.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

.claude/workflows/hmw.js

@@ -31,15 +31,15 @@ const VALID_ROLES = [
 //   investigator-codebase (H4.3b) · reviewer (H4.3a) · database-agent (H4.3b).
 //   [harvest-curator (H4.3c) cũng promote nhưng là monitor — không fan-out qua hmw.]
 // Demoted roles còn lại: frontmatter ĐÃ pin `claude-opus-4-8` → hmw KHÔNG set model (frontmatter tự lo).
-// Role-less = sweep-class CÓ CHỦ ĐÍCH (taskList do lead author từng run = đã phân loại lúc author) → 'opus'.
-// Per-task override: tier:'fable' (việc hệ-trọng giao role demoted) / tier:'opus' (force rẻ).
+// Role-less (H6.2 governed-ultracode adopt S63): default = inherit lead-model (top-tier) — KHÔNG pin rẻ làm default.
+// Sweep/cost → per-task tier:'opus' escape-hatch (KHÔNG còn default 'opus'). Per-task tier:'fable' = force lead-tier khi hệ-trọng.
 function resolveModel(role, rawRole, tier, i) {
   if (tier === 'fable' || tier === 'opus') return tier
   if (tier) log(`⚠️ hmw: tier "${tier}" lạ (task #${i}) → bỏ qua, dùng tier-map mặc định H4.5`)
   // Invalid-role (typo ∉ VALID_ROLES, WARN đã log ở caller) → fail-UP inherit Fable 5 — H4.5 "chưa-phân-loại
   // → nghiêng quality" (KHÔNG rơi 'opus': task có thể là gate-class gõ nhầm tên role).
   if (!role && rawRole) return undefined
-  if (!role) { log(`hmw: task #${i} role-less → model 'opus' (sweep-class H4.5; khai tier:'fable' nếu hệ-trọng)`); return 'opus' }
+  if (!role) { log(`hmw: task #${i} role-less → inherit lead-model (H6.2 governed-ultracode; per-task tier:'opus' = escape-hatch sweep/cost)`); return undefined }
   return undefined // role có frontmatter: promote=inherit Fable 5 · demoted=pin Opus 4.8 — KHÔNG override
 }