- Backend: previous month calculation with year wrapping (Jan→Dec)
- Backend: previous_month_paid per bill row, previous_month_total in summary
- Frontend: 'Last Month' column in desktop table with muted text
- Frontend: 'Last Month' in mobile view, summary card for prev month total
- Hudson security audit: 5/5 PASS (SQL injection, date wrapping, user scoping, auth, XSS)
- Skip-to-content link for keyboard users (sr-only/focus:not-sr-only pattern)
- aria-expanded and aria-haspopup on Tracker menu dropdown
- aria-label on footer, role='main' and aria-labelledby on layout wrapper
- Main content wrapped in <main> with unique id from React useId()
- Fixed build error: useId imported from react, not react-router-dom
- Hudson security audit: 5/5 PASS (no XSS, no DOM clobbering, no injection)
- Added dependsOn field to all 17 versioned migrations
- Added validateMigrationDependencies() function for dependency validation
- Migrations with unmet dependencies are skipped with error log (no crash)
- Dependency satisfaction logged: [migration] vX depends on [vY] — satisfied
- appliedVersions Set tracks newly applied migrations for subsequent checks
- Hudson security audit: 7/7 PASS
- All migrations (versioned, legacy, unversioned) now run within
BEGIN/COMMIT with ROLLBACK on failure
- v0.40 migration uses try/finally to guarantee PRAGMA foreign_keys
is always re-enabled, even on error paths
- Clear transaction boundary logging (BEGIN/COMMIT/ROLLBACK)
- Hudson security audit: 6/7 PASS, FK fix applied for v0.40 edge case
- React.lazy + Suspense for all page components (except LoginPage)
- PageLoader component for loading states
- Version badge on admin roadmap page
- Version in /api/about-admin response
- Roadmap nav link for admins (dropdown + sidebar)
- /admin/roadmap route
- New AdminDashboard component with Roadmap and Activity Log
- Color-coded priority cards (🔴🟠🟡🔵💭) with collapsible sections
- CRITICAL/HIGH expanded by default, others collapsed
- Activity log shows DEVELOPMENT_LOG entries in reverse chronological order
- Admin-only rendering, non-admins see standard About page
- Custom scrollbar styles for admin panels
- Version bumped to 0.20.0 (Bishop)
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