- Batch queries replace per-bill loops in tracker and analytics
- monthly_bill_state, payments, prev month payments batched with WHERE IN
- Empty billIds guards prevent SQL errors
- Hudson security audit: 5/5 PASS (SQL injection, empty IN, user scoping, data leakage, type safety)
- 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)
- 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
CRITICAL fix: Users upgrading from pre-migration-tracking databases
(now get 'invalid username/password' because schema_migrations table
doesn't exist. Added handleLegacyDatabase() and
reconcileLegacyMigrations() to detect and reconcile legacy DBs.
Security fixes:
- Path traversal: replaced sanitizePath() with ALLOWED_FILES allowlist
- Public /about bypass: added admin route guard in App.jsx
- Sensitive info exposure: expanded redactSensitiveContent() patterns
- Error message path leaks: generic error messages only
- Race condition: wrapped in db.transaction() in server.js
- Password validation: INIT_REGULAR_PASS min 8 chars with process.exit(1)
All verified by Bishop (build + runtime) and Private_Hudson (security).
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