[CLAUDE] Docs: Harness-4 two-tier runtime-VERIFIED (spawn-test 2 chiều post-restart) + email-back AI_INFRA

- Spawn-test 2 chiều S57bis: H1 tooling-auditor (demote pin) self-report claude-opus-4-8[1m] + H2 harvest-curator (promote inherit) self-report claude-fable-5[1m] → nấc executed-file/PENDING-RESTART → RUNTIME-VERIFIED (adap-report §2/§5 + STATUS row). [1m] 1M-resolve SE tự verify.
- Email update 2026-06-11-se-to-ai_infra-harness-4-runtime-verified (nac sent, sha ecf1d587, honest n=1/chiều, hmw.js executed-file giữ) + _index OUTBOUND.
- Lesson env: CCD harness cache agent frontmatter — restart CLI mới ăn (2 data-point 06-10/06-11).
- Bundle 06-10 carry: 7 agent pin opus-4-8 + 4 inherit + hmw.js tier-map H4.5 + agents/README two-tier + 2 adap-report + email 06-10 + agent-memory delta (KEEP-ALL-5 H2-verified) + investigator L1→L2 archive curate.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

.claude/agents/implementer-backend.md

@@ -2,7 +2,7 @@
 name: implementer-backend
 description: |
   WRITE specialist cho toàn bộ .NET backend SOLUTION_ERP (Domain + Application + Infrastructure + Api layer). Scaffold entity + enum + EF Configuration + Migration 3-file + DbInitializer seed + CQRS Command/Query/Validator/Handler + MediatR + Controller + DTO. Case 1+2+3+5 only (cookie-cutter mechanical scaffold, multi-file independent orchestrator-workers, isolated method test-gen handler, mass migration). DO NOT touch FE 2 app (đó là implementer-frontend). DO NOT write test assertions (đó là test-specialist). DO NOT schema design / UX decision / cross-stack bug fix reasoning (em main solo). Auto-refuses out-of-scope.
-model: inherit
+model: claude-opus-4-8
 tools: [Read, Edit, Write, Bash, Skill, Grep, Glob, mcp__rag-unified__search_memory, mcp__rag-unified__search_code, mcp__rag-unified__cross_project_search, mcp__rag-unified__list_projects]
 skills:
   - ef-core-migration