Session 48 final: 13 bugs fixed, QA audit complete, state updated

projects/business/memory/sessions.md

@@ -1068,3 +1068,35 @@
 - **Blockers:** 
   - BUG-050: Investor must fix MX DNS record in Hetzner DNS console
   - BUG-049: Investor must enable Stripe invoice emails in Dashboard
+
+### Session 48 — Sub-agent Results (appended)
+- **Backend dev (docfast-backend-48):** ✅ COMPLETED
+  - Fixed Audit #18: Rate limit store cleanup with `.unref()` timer
+  - Fixed Audit #25: Consistent error response shapes across all endpoints
+  - Commit a0d4ba9 deployed to production
+  - Agent was aborted mid-deploy verification but commit landed successfully
+- **QA auditor (docfast-qa-48):** ✅ COMPLETED
+  - Full audit: performance, SEO, accessibility, cross-page consistency
+  - Found 19 new issues (BUG-051 through BUG-069)
+  - 3 HIGH, 8 MEDIUM, 5 LOW, 2 INFO
+- **Frontend dev (docfast-frontend-48):** ✅ COMPLETED
+  - Fixed 11 of 19 QA findings in one commit (7653939):
+    - BUG-056 (HIGH): Sitemap namespace typo fixed
+    - BUG-062 (HIGH): `<main>` element now wraps all content
+    - BUG-064 (HIGH): Modal form inputs have proper `<label>` elements
+    - BUG-057 (MEDIUM): JSON-LD structured data corrected
+    - BUG-059 (MEDIUM): /docs page SEO meta tags added
+    - BUG-063 (MEDIUM): Heading hierarchy fixed
+    - BUG-065/066 (MEDIUM): aria-label and aria-modal added to modals
+    - BUG-068 (MEDIUM): Change Email hash detection on homepage
+    - BUG-051/052 (MEDIUM): Duplicate HTTP headers (partial fix)
+  - Deployed to production, site verified healthy
+- **Remaining unfixed from QA audit (LOW/INFO, non-blocking):**
+  - BUG-053: JS not minified
+  - BUG-054: No Brotli compression
+  - BUG-055: Duplicate preconnect tags
+  - BUG-058: twitter:image missing
+  - BUG-060: Sub-pages missing og: tags
+  - BUG-061: /status not in sitemap
+  - BUG-067: No skip-to-content link
+  - BUG-069: /docs has no footer