[CLAUDE] Agents: S39 upgrade multi-agent 4→7 + budget +50% + 5 RAG MCP (BVAAU pattern adapted)

Anh main yêu cầu tăng tốc + chất lượng SOLUTION_ERP: tham khảo BVAAU 7-agent config
+ budget token +50% + thêm 3 sub-agent. Adapted (NOT copied) — SOLUTION_ERP 2-FE-app
fit + giữ 6 skill proven battle-test 38 session.

Split 4→7 agent (anh main chốt via AskUserQuestion):
- investigator → SPLIT: investigator-codebase (cyan, internal SQL/EF/grep) +
  investigator-api (blue, external docs/CVE/lib/cross-project)
- implementer → SPLIT: implementer-backend (yellow, .NET Domain+App+Infra+Api) +
  implementer-frontend (orange, FE 2 app cookie-cutter mirror SHA256) [anh chốt
  backend/frontend thay domain/infra BVAAU — fit 2 React app + giảm gotcha #53 truncate]
- test-specialist NEW (purple, dedicated tests/ — anh chốt full test layer)
- reviewer (red) + cicd-monitor (green) giữ

Tool grant +3 RAG MCP all 7 agent (search_code BM25 + store_memory + list_projects)
— BVAAU port, MCP server verified support. Prior chỉ 2 (search_memory + cross_project).

Skill re-distribute 6 skill across 7 agent (xem README matrix).

Memory: rename investigator→investigator-codebase + implementer→implementer-backend
(giữ history) + seed 3 new MEMORY (investigator-api/implementer-frontend/test-specialist)
extract relevant patterns. Delete old investigator.md + implementer.md.

README rewrite: 7-agent architecture + decision tree split-routing + phân việc matrix
boundary + token budget +50% cost reality (~1.05M opt / ~2M heavy ceiling) +
anti-truncation rules (gotcha #53 5× mitigation: brief ≤8K + curate pre-spawn +
entry ≤1.5K + 529 fallback solo).

⚠️ Anh main RESTART Claude Code CLI để registry hot-reload 7 agent (per S27 lesson
model:inherit + new files). Verify post-restart: smoke spawn 3 new agent confirm load.

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

.claude/agent-memory/investigator-codebase/archive/2026-05-q3.md

@@ -0,0 +1,30 @@
+# Investigator — Archive Q3 2026-05 (S34 curate)
+
+> Verbose Recent activity entries archived from MEMORY.md S34 init (em main proxy curate 2026-05-27).
+> Patterns proven + Active workflow schemas foundation preserved untouched in MEMORY.md.
+
+---
+
+## 2026-05-22 — S27 wrap-up retrospective em main proxy
+
+Investigator pre-flight CRITICAL miss: nếu spawn pre-Plan A.3 (RAG manual control build) → would have catch Qdrant Web UI static missing PRE-em main write rag-dashboard.ps1 link `localhost:6333/dashboard`. Pattern reinforced: **pre-flight infrastructure audit MUST spawn Investigator** trước khi em main claim "X work" trong docs. Em main S27 SOLO miss external dependency check (Qdrant Web UI separate repo from binary). Anh pqhuy catch via UAT browser → escalate.
+
+**Audit cumulative S20-S26 memory log entries claiming "Investigator spawn" - re-verify retroactive:** Per pitfall confirm spawn `investigator` agent type NOT FOUND trong session S27, có nghĩa registry chưa bao giờ load trong session này. Nhưng memory log S23 t1 K0 + S25 t1 audit Bug 1+2 + S26 Plan AG audit 5Q + Plan AI RAG research **đã ghi "spawn Investigator" với token cost 28-40K**. Possibility: (a) Previous sessions có registry load thành công (Claude Code version cũ hơn / file format khác / hot-reload sau /agents UI invoke), hoặc (b) Em main misattribute - actually spawn `general-purpose` agent default. Cần audit history Claude Code logs để xác minh - ngoài scope S27. **For now: trust prior memory entries but FLAG uncertainty cho future investigation.**
+
+---
+
+## 2026-05-22 — Curate session em main S29 era
+
+Archived 10 verbose Recent activity entries S21 → S24 Plan AA → `archive/2026-05-q1.md`. KEEP: S25 Bug audit + wrap, S26 Plan AG + Plan AI RAG, 2026-05-11 setup. Patterns proven section + Active workflow schemas section preserved. Memory size before: 34.9 KB → after: target ~20-22 KB.
+
+---
+
+## 2026-05-19 — S25 wrap Plan AB Bug 1+2 audit + 6 follow-up plans em main solo
+
+Pre-Plan AB audit ~28K confirm root cause: Bug 1 Budget Adjust Handler ĐÃ log Changelog (Header+Update) nhưng FE HistoryTab filter strict TraLai-only loại. Bug 2 ApplyReturnModeAsync 4 mode KHÔNG add Changelog.Add() — chỉ caller LogTransitionAsync log phase transition. Recommended fix path: BE add log return mode + FE filter relax + Decision badge differentiation. **Em main solo từ Plan AC** (cross-stack reasoning Implementer would REFUSE). Patterns reusable Contract V2 audit recovery + Budget changelog UI: synthetic recovery FE merge + userMap fallback + drop misleading badges + preventive batch fix systemic gap. CICD result: 7 commits `e23f51c..506cada` push remote, runs #215 FAIL Plan M tests SQLite tie-break re-emerge → #216-#221 PASS streak. Gotcha #48 SQLite tie-break pending docs.
+
+---
+
+## 2026-05-11 — Setup baseline
+
+Investigator agent initialized. Baseline knowledge load complete (44 gotchas + 14 memory entries + 6 skills + 27 mig + 81 test pass cumulative). No investigations performed yet. Awaiting first SendMessage from em main.