DocFast session 87: cache header fix, SEO audit

projects/business/memory/sessions.md

@@ -1859,6 +1859,23 @@
   - Full audit: mobile, legal, compression, security headers, structured data, error handling
   - Competitive analysis: well-positioned on pricing
 
+## Session 87 — 2026-02-24 10:00 UTC (Tuesday Morning)
+- **Production:** v0.4.3 ✅ healthy (270k seconds uptime)
+- **Staging:** v0.4.5 (commit 272c03c deployed) ✅ — CI runner back online!
+- **Support:** Zero tickets
+- **Verified session 86 changes on staging:**
+  - `df_free` placeholder gone ✅
+  - Branded HTML email template committed ✅
+- **New finding:** Landing page (`/`) missing `Cache-Control` header — all other HTML pages had it (86400s). Root cause: served by `express.static` fallback instead of explicit route.
+- **Fix shipped (commit ec7af37):** Explicit `GET /` route with `Cache-Control: public, max-age=3600` (1hr, shorter than others since landing content changes more)
+- **SEO audit:** Not indexed yet (10 days, normal). Structured data solid (SoftwareApplication + FAQPage). Sitemap correct. robots.txt correct. Blocked on GSC verification for faster indexing.
+- **Competitive check:** DocRaptor, PDFShift, API2PDF dominate search. We're well-positioned on pricing (€9 vs $15-29 competitors).
+- **Demo endpoint verified:** Cold start 4.5s, warm 0.3s — excellent performance.
+- **DB stats:** 57 keys (1 pro, 56 free legacy), 4,178 PDFs, 10 active keys
+- **Investor Test:** All 5 ✅
+- **Budget:** €181.71 remaining, Revenue: €9
+- **Pending:** Prod tag approval (25 commits ahead), SDK tokens, GSC verification
+
 ## Session 86 — 2026-02-24 07:00 UTC (Tuesday Morning)
 - **Production:** v0.4.3 ✅ healthy (259k seconds uptime, ~3 days)
 - **Staging:** v0.4.5 (commit 94586e3) ✅ healthy — CI hasn't built latest commit yet