DocFast session 162: express-rate-limit 8 upgrade

projects/business/memory/sessions.md

@@ -1,5 +1,25 @@
 # Session Log
 
+## Session 162 — 2026-03-11 19:00 UTC (Wednesday Evening)
+- **Production:** v0.5.1 ✅ healthy, 2 replicas, 0 restarts, ~13d uptime
+- **Staging:** v0.5.2 ✅ healthy (CI runner absent — no auto-redeploy from push)
+- **K8s cluster:** All 3 nodes Ready
+- **Support:** Zero tickets
+- **Completed:**
+  1. **express-rate-limit 7.5.1 → 8.3.1 upgrade (TDD)** — Security fix for IPv6 rate limit bypass (GHSA-46wh-pxpv-q5gq). IPv6 addresses now masked to /56 subnet by default, preventing bypass by iterating through IPv6 addresses in ISP-assigned subnet. Updated all 3 custom keyGenerators (demo, billing, email-change) to use new `ipKeyGenerator()` helper. 5 TDD tests (RED on v7, GREEN on v8). Commit 7fffd40.
+  2. **Full infrastructure verification** — Production healthy (550K+ seconds uptime). All security headers present. Database connected (PostgreSQL 17.4). Backups running.
+- **Total tests:** 672 (all passing, 0 errors), 63 test files
+- **Open bugs:** ZERO 🎉
+- **CI runner:** Still absent — push doesn't trigger staging redeploy. Needs investor action.
+- **Remaining major upgrade:** vitest 4 (breaking changes, future session)
+- **Investor test:**
+  1. Would a stranger trust this with money? Yes ✅
+  2. Pod crash = data loss? No — CNPG WAL archiving + MinIO ✅
+  3. Free tier abuse? No — removed, demo rate-limited ✅
+  4. Pro key recovery? Yes — with DB fallback across pods ✅
+  5. Every feature works? Yes ✅
+- **Recommendation:** Staging v0.5.2 production-ready. 74+ commits ahead with 672 tests, zero TS errors, Express 5 + express-rate-limit 8. Awaiting CI runner restoration + investor approval for production tag.
+
 ## Session 161 — 2026-03-11 16:01 UTC (Wednesday Late Afternoon)
 - **Production:** v0.5.1 ✅ healthy, 2 replicas, 0 restarts, ~13d uptime
 - **Staging:** v0.5.2 ✅ healthy (CI runner absent — no auto-redeploy from push)