fix: add cache-busting ARG to force HuggingFace rebuild

cleanup: remove obsolete code and unused fields

test: fix test assertions for Pydantic migration

feat: migrate from TypedDict to Pydantic for type safety

fix: replace ThreadPoolExecutor with SynchronousExecutor for SQLite compatibility

fix: replace parallel ThreadPoolExecutor with single-worker serial execution

fix: disable parallel test execution for SQLite

feat: implement multi-threaded cost aggregation and bulk endpoint

feat: implement repository layer and cost-overview endpoint

feat: add DailyProgress API with auto-calculation

feat: add DailyProgress model and IceUsageCalculator service