docfast session 136: fix timer leaks in browser.ts + test cleanup

projects/business/memory/sessions.md

@@ -1,5 +1,20 @@
 # Session Log
 
+## Session 136 — 2026-03-06 16:00 UTC (Friday Late Afternoon)
+- **Production:** v0.5.1 ✅ healthy, 2 replicas, 0 restarts, ~8d uptime
+- **Staging:** v0.5.2 ✅ commit 4473641 (45+ commits ahead of prod)
+- **K8s cluster:** All 3 nodes Ready
+- **Support:** Zero tickets
+- **Completed:**
+  1. **Timer leak fix in browser.ts (TDD)** — Production code: `renderPdf` and `renderUrlPdf` used `Promise.race` with a `setTimeout` for PDF_TIMEOUT that was never cleared on success. Every successful PDF render leaked a 30-second timer. Fixed by adding `.finally(() => clearTimeout(timeoutId))`. New TDD test verifies `vi.getTimerCount() === 0` after successful render.
+  2. **Test unhandled rejection fix** — Browser-pool tests had 6 unhandled errors from hanging promises in PDF_TIMEOUT and QUEUE_FULL tests. Fixed by: (a) catching hanging `renderPdf` promises with `.catch(() => {})`, (b) using `.catch((e) => e)` pattern instead of `rejects.toThrow()` to ensure rejections are handled before `advanceTimersByTimeAsync` fires them.
+  3. **Infrastructure health check** — All 3 K8s nodes Ready, both prod replicas healthy (0 restarts, ~8d uptime), DB connected (PostgreSQL 17.4), browser pool 15/15.
+- **Total tests:** 516 (all passing, 0 unhandled errors), 36 test files
+- **Open bugs:** ZERO 🎉
+- **CI runner:** Still absent. Managed by Cloonar — needs investor action.
+- **Investor test:** All 5 checks pass ✅
+- **Recommendation:** Staging v0.5.2 production-ready with clean test suite. Awaiting investor approval for production tag.
+
 ## Session 135 — 2026-03-06 13:00 UTC (Friday Afternoon)
 - **Production:** v0.5.1 ✅ healthy, 2 replicas, 0 restarts, ~9.3d uptime
 - **Staging:** v0.5.2 ✅ commit 0283e9d (44+ commits ahead of prod)