fix: Stripe webhook setup completion, notifications routing, billing UI
- Fix StripeEventListener: mark setup as Completed when subscription.created webhook fires
- Fix notifications routes: move outside subscribed middleware (non-critical feature)
- Fix NotificationBell: guard response.ok before parsing JSON
- Fix StripeEventListener: use data_get() for payload access
- Rewrite billing page to use SettingsLayout with download buttons on invoices
- Remove duplicate Unit/Listeners/StripeEventListenerTest (consolidated into Feature)
- Add comprehensive Stripe webhook tests (14 scenarios: happy path, setup transitions, edge cases, error handling)
- Update billing i18n: remove "no credit card" text, add status key
- Move auth layout logo to top-left corner
- Redesign onboarding Role page with compact list layout
- Add persona i18n translations (EN, PT-BR, ES)
- Update README with API, MCP, tech stack, quick start
bb6d0a2678