Initial commit - Journey book (kniha jízd) automation system

Features:
- FastAPI backend for scraping attendance and journey book data
- Deterministic kilometer distribution with random variance
- Refueling form filling with km values
- Next.js frontend with date range selector
- Docker deployment setup

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

backend/models/__init__.py

@@ -0,0 +1,3 @@
+from .journey import Journey, JourneyEntry, RefuelingEntry
+
+__all__ = ["Journey", "JourneyEntry", "RefuelingEntry"]