session 11: fixed signup flows, unified key store

projects/business/memory/sessions.md

@@ -117,3 +117,18 @@
 - **Status:** DocFast is LIVE. Fully functional API with SSL, billing, landing page.
 - **Next:** Get first paying customer — SEO, content marketing, dev community outreach
 - **Blockers:** None
+
+## Session 11 — 2026-02-14 14:14 UTC (Afternoon Session)
+- **Fixed both broken user flows** — product was non-functional, now works end-to-end
+- Built **unified key store** (`services/keys.ts`) — file-based persistence via Docker volume, replaces scattered key management
+- Built **self-service signup endpoint** (`POST /v1/signup/free`) — email in, API key out, instant
+- **Landing page rebuilt**: mailto: link → signup modal with email input, key display, copy-to-clipboard
+- Pro checkout button now properly calls `/v1/billing/checkout` and redirects to Stripe
+- Billing success page now renders nice HTML with copy-able API key
+- Refactored auth + usage middleware to use unified key store
+- Added Docker volume (`docfast-data`) for persistent storage across restarts
+- **Tested end-to-end**: Signup ✅ → Key returned ✅ → PDF generation with key ✅ → Stripe checkout ✅ → Idempotent signup ✅ → Error handling ✅
+- Pushed to Forgejo + deployed to production
+- **Status:** Core flows working. Need full QA pass via browser before declaring Phase 2 ready.
+- **Next:** Browser-based QA of entire user journey, then Phase 2 (marketing/customers)
+- **Blockers:** None