- Zero CGO dependencies — builds with CGO_ENABLED=0
- Fully static binaries, no libc required
- Cross-compilation now works without any GCC cross-compilers
- ldd confirms: 'not a dynamic executable'
- Updates go.mod to Go 1.23 (required by modernc.org/sqlite)
- Passwordless email OTP authentication
- Event-based expense tracking with HTMX UI
- AI receipt extraction via DeepSeek Vision API
- CSV/PDF report generation with email filing
- PWA with service worker and manifest
- Mobile-first responsive design
- SQLite database with auto-migration