docs: sync workspace review with actual code state — post-audit update
- platform-service: 37 → 62 modules, 1020 → 1239 tests, 23 → 53 packages
- Mark completed: Platform Acceleration (4 phases), CDN, Search, Dunning,
Tenants, Retention, Backups, API Versioning, A/B Testing, Impersonation,
Predictive Analytics, AI Diagnostics, Broadcasts, Surveys
- Add scaffolded roadmaps section (11 modules with types/repo/routes/tests)
- Update maturity score: 91 → 97/100
- Update priority list: 13 items moved from TODO to DONE
- Accurate counts: 75 routes, 131 Cosmos containers, ~3,492 total tests