docs: update CHANGELOG and PROJECT.md for visual test overhaul

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

CHANGELOG.md

@@ -6,6 +6,16 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
 
 ## [Unreleased]
 
+### Changed
+- **Visual test overhaul** — consolidated 3 separate Playwright server processes
+  (ports 5111/5112/5113) into 1 session-scoped fixture in `conftest.py`; 77 tests
+  pass in ~59 seconds (was ~3× slower with 3 independent servers). Fixed `init_db`
+  mock bypass (must patch `padelnomics.app.init_db`, not `core.init_db`, since
+  `from .core import init_db` creates a local binding). Forces `RESEND_API_KEY=""`
+  and `WAITLIST_MODE=false` in subprocess so visual tests never send real emails or
+  render waitlist pages. Added sections J–N: pricing, checkout, supplier signup,
+  supplier dashboard, business plan export.
+
 ### Added
 - **SOPS + age encrypted secrets** — `.env.dev.sops` and `.env.prod.sops` replace
   `.env.example` and GitLab CI/CD variables; age keypair for encryption/decryption;