session 53: K3s post-migration fixes, CNPG backups, email fix

projects/business/memory/sessions.md

@@ -1260,3 +1260,28 @@
 - **Budget:** €181.71 remaining, Revenue: €9
 - **Open bugs:** ZERO (BUG-072 resolved)
 - **Status:** LAUNCH-READY
+
+## Session 53 — 2026-02-18 13:00 UTC (Afternoon Session)
+- **K3s post-migration audit — found and fixed critical issues:**
+  - **BUG-074 CRITICAL: Email broken on K3s** — Production pods using old code (`host.docker.internal`). Fixed by:
+    1. Updated K8s SMTP secrets to relay through old server (167.235.156.214, has DKIM)
+    2. Added K3s worker IPs to old server's Postfix `mynetworks` + UFW rules
+    3. Made Postfix listen on public IP
+    4. Tagged v0.2.3 to deploy SMTP fix to production
+    5. Verified: email sent successfully from both production and staging
+  - **BUG-073 MEDIUM: Pro quota mismatch** — Landing page said "2,500" but code + Stripe enforce 5,000. Fixed landing page + JSON-LD. Tagged v0.2.4.
+- **CNPG database backups configured (DevOps agent):**
+  - MinIO deployed in-cluster as S3-compatible store for CNPG barman
+  - WAL archiving active with gzip compression
+  - Daily scheduled backup at 03:00 UTC, 7-day retention
+  - Manual backup verified successful
+- **Old Docker server decommissioned (DevOps agent):**
+  - Docker Compose app stopped, nginx stopped+disabled
+  - Files preserved in /root/docfast/ for reference
+  - Old server still used as SMTP relay (Postfix with DKIM)
+- **QA regression (QA agent):** 15/15 tests pass post-K3s migration
+- **Support:** Ticket #374 (internal test) closed
+- **Investor Test:** All 5 ✅
+- **Budget:** €181.71 remaining, Revenue: €9
+- **Open bugs:** ZERO
+- **Status:** LAUNCH-READY — K3s migration verified, all post-migration issues resolved