[CLAUDE] Docs: chốt Session 21 turn 1 — Add cicd-monitor (4 sub-agents seeds-only)

Path A chốt sau pre-flight Plan G Trial Week 1. Session 21 turn 1 em main solo (no agent spawn) — đọc context đầy đủ S20 wrap + 3 agent docs + skill-audit + 2 latest session logs → setup cicd-monitor 4th sub-agent (commit `f1c61c9` đã push).

Files updated:
- docs/STATUS.md — Last updated S21 t1 + 1 Recently Done row top (giữ nguyên S20 narrative §6.5)
- docs/HANDOFF.md — Last updated S21 t1 + full TL;DR Session 21 turn 1 section đầu (giữ nguyên S20 WRAP/turn 7/prev TL;DR)
- docs/changelog/sessions/2026-05-12-0030-s21-cicd-monitor-add.md — session log mới ~200 LOC: Q&A Path A/B + deliverables + 3 sub-agent original seeds-only (KHÔNG flush MEMORY.md vì chưa spawn) + Plan G update workflow 4-agent pipeline + cost reality update

Stats S21 turn 1:
- 4 sub-agents seeds-only (+1 cicd-monitor green READ tier)
- 16 memory entries unchanged (update existing feedback_multi_agent_setup.md 3 → 4 agents)
- 27 mig · 59 tables · ~142 endpoints · 81 test · 44 gotcha · 6 skills unchanged
- Cost: 750K spawn / 1.35M heavy / 700K optimized (~6.5× solo / ~3.5× cached)
- 2 commit S21 (f1c61c9 cicd-monitor add + this chốt session)

CI skip per path filter (all .md match `**/*.md` paths-ignore gotcha #41) — no IIS deploy (expected, agent infra local-only).

Next session: Plan B Contract V2 wire Mig 28+29 Trial Week 1 kick-off với 4 agents.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

docs/HANDOFF.md

@@ -1,6 +1,74 @@
 # HANDOFF — Brief 5 phút cho session tiếp theo
 
-**Last updated:** 2026-05-11 22:00 (Session 20 WRAP turns 1-12 — **🎯 14 commit từ `9dee00d` → `ae1814c`. PE Detail UI restructure (t1-5) + Manual budget drop tên field (t6) + Mig 27 admin menu eOffice (t7) + NCC 5-màu palette + Winner icon ✓ + AddSupplier auto-fill master + Responsive laptop nhỏ 4-tầng (t8-11) + Setup 3 sub-agents Investigator/Implementer/Reviewer (t12). Stats: 27 mig · 59 tables · ~142 endpoints · 34 FE pages · 61 menu key · 81 test pass · 44 gotcha · 16 memory (+2: responsive + multi-agent) · 3 sub-agents seeds-only state (chưa spawn work). Trial Week 1 candidate S21: Contract V2 wire Mig 28+29 mirror PE pattern.**)
+**Last updated:** 2026-05-12 (Session 21 turn 1 — **🎯 Add con thứ 4 cicd-monitor (Path A — post-deploy verifier). 1 commit `f1c61c9` pushed `36e21c8..f1c61c9 main -> main`. CI skipped per path filter (3 file `.md`). Cost reality update: ~750K spawn (3 → 4 agents) · ~1.35M heavy / ~700K optimized. Stats: 4 sub-agents seeds-only · 16 memory · 27 mig · 59 tables · ~142 endpoints · 81 test · 44 gotcha · 6 skills unchanged. KHÔNG flush 3 agent MEMORY.md (chưa spawn work — em main solo). Trial Week 1 kick-off S21 turn 2+ Plan B Contract V2 wire mirror PE pattern.**)
+
+## TL;DR Session 21 turn 1 — Add cicd-monitor (4th sub-agent, Path A chốt)
+
+User chốt Path A sau pre-flight Plan G Trial Week 1 (S20 wrap đã setup 3 agents Inv/Imp/Rev): thêm sub-agent thứ 4 chuyên post-deploy verify (Gitea Actions poll + bundle hash × 2 app + sqlcmd mig prod + endpoint smoke). **Trade-off chốt:** +~150K spawn extra mỗi run, đổi lại catch deploy ship fail tự động — recurring blind spot pattern em main solo S20 quên verify ~30% push.
+
+### Em main solo S21 turn 1 (no agent spawn)
+
+1 turn từ S20 wrap chiều/đêm 2026-05-11 22:00 sang sáng/đêm 2026-05-12. Em main solo qua context paste + Write file. **3 agents (Inv/Imp/Rev) KHÔNG spawn**, vẫn seeds-only state. cicd-monitor mới setup file (Write), chưa spawn work.
+
+### Deliverables (1 commit `f1c61c9`, 456 +/-23 LOC)
+
+| File | Loại | LOC |
+|---|---|---|
+| `.claude/agents/cicd-monitor.md` | NEW system prompt (~7KB) | ~200 |
+| `.claude/agent-memory/cicd-monitor/MEMORY.md` | NEW seed (~5KB) | ~150 |
+| `.claude/agents/README.md` | UPDATE 4-agent architecture | +~80 / -23 |
+| `feedback_multi_agent_setup.md` (user-level memory) | UPDATE 3 → 4 agents | +12 / -6 |
+
+### Q&A chốt scope (Path A vs B)
+
+- **Path A (chọn):** cicd-monitor READ tier (~150K/spawn) — catch fail tự động
+- **Path B (bỏ):** Em main thêm checklist verify manual (~0 cost) — phụ thuộc memory + recurring miss
+- **Decision rationale:** Recurring blind spot S20 ~30% push quên verify → tự động hóa worth +150K trade-off
+
+### CI skipped (gotcha #41 path filter)
+
+3 file `.md` → match `paths-ignore: '**/*.md'` → CI không trigger → prod IIS không thay đổi. Đây là **expected behavior** — agent infrastructure là local Claude Code only, KHÔNG cần deploy lên prod IIS. Khi spawn agent đọc file `.md` từ local filesystem.
+
+### State chốt S21 turn 1
+
+| Metric | Trước S21 | Sau S21 t1 | Δ |
+|---|---|---|---|
+| DB tables | 59 | 59 | 0 |
+| Migrations | 27 | 27 | 0 |
+| Endpoints | ~142 | ~142 | 0 |
+| FE pages | 34 | 34 | 0 |
+| Unit tests | 81 | 81 | 0 (no test added) |
+| Gotchas | 44 | 44 | 0 |
+| Memory entries | 16 | 16 | 0 (update existing entry only) |
+| Skills | 6 | 6 | 0 |
+| **Sub-agents** | **3 seeds-only** | **4 seeds-only** | **+1 cicd-monitor green** |
+| Commits S21 | — | **1** | (`f1c61c9`) |
+
+### Plan G (Multi-agent Trial 4-week) update post-S21 t1
+
+- ✅ **Setup phase complete**: 3 agents S20 t12 + 1 agent S21 t1 → 4 sub-agents seeds-only ready
+- ⏳ **Week 1 pending**: Plan B Contract V2 wire Mig 28+29 — kick-off Session 21 turn 2+
+- ⏳ **Pass criteria updated**: Rev catch ≥ 2 wire bugs + **CI/CD Monitor catch ≥ 1 deploy ship fail** (bundle hash unchanged / mig drift) + saving ≥ 25% Case 1+2 + Max 20× quota comfortable
+
+### Next session priority unchanged (carry from S20 wrap)
+
+- **Plan B** (HIGH) Contract V2 wire — Trial Week 1 kick-off với 4 agents
+- **Plan C** (HIGH) Test gap fill (B4 silent 403 + Mig 25/26/27 PATCH) — bundle Chunk E Plan B
+- **Plan D** Hard blockers ops (UAT/SMTP/creds/backup)
+- **Plan E** Phân quyền strict V2 + drop legacy V1
+- **Plan F** Audit định kỳ 2026-06-01 (chưa đến — KHÔNG tự chạy)
+
+### Cost reality update
+
+| Metric | Trước (3 agents) | Sau (4 agents) |
+|---|---|---|
+| Spawn setup total | ~564K | **~750K** (+150K cicd-monitor) |
+| Heavy session | ~1.2M (~6× solo) | **~1.35M (~6.5× solo)** |
+| Optimized cached | ~600K (~3× solo) | **~700K (~3.5× solo)** |
+
+Max 20× plan absorbs ~3.5× solo cost comfortable.
+
+---
 
 ## TL;DR Session 20 WRAP (turns 1-12 chốt 2026-05-11)