Public Changelog & Content System

This release introduces a complete public changelog system with CardStack animations, modernized content pages, and comprehensive test coverage.

Features

• Public changelog system - Full timeline UI with MDX-based content and draft/published support
• Intercepting routes modal - Click changelog items to open in modal, direct URLs still work
• CardStack widget - Animated changelog cards in organization sidebar with dismiss functionality
• Redis-backed dismissal - Per-user changelog dismissal persistence across sessions
• Debug Panel - Development-only panel with "Reset Changelog" and other debug actions
• Active navigation highlighting - Header navigation now shows which section you're in
• Blog posts section - Sample blog content with authentication, Stripe, Prisma, Next.js, and TailwindCSS guides

Refactoring

• Modernized changelog timeline - Clean vertical line design with dot markers and compact cards
• Content header component - Reusable header with title, description, and navigation tabs
• Docs moved to (layout) route group - Better organization of public content routes
• Post card variants - Multiple display variants for blog post cards

Bug Fixes

• InterceptDialog reset - Properly reset parallel route state with router.back()
• E2E test stability - Handle session invalidation and correct selectors for sign out flow

Testing

• 23 new unit tests - changelog-manager, changelog-actions, and intercept-dialog
• 3 new E2E tests - Timeline rendering, item navigation, and direct URL access
• All tests passing with zero skipped