- German-dialect scalar parsers in Core (GermanNumber/Money/Date, ValueCell):
decimal comma, thousands dot, unit suffixes, € currency, both date shapes.
- Declarative MappingProfile + RowClassifier (skip summary/blank/all-zero rows) +
CsvImporter (CsvHelper) staging readings/events/manual-costs, with auto swap
detection on register decreases and month-end anchoring for interleaved oil dates.
- Four built-in ReferenceProfiles (Strom/Wasser/Heizöl/Kosten).
- ImportService: commit as revertible import_batch + wholesale consumption recompute
per affected meter (NormalizationService/MeterConfigFactory), revert by batch.
- Reconciliation tests: all 4 CSVs match the sheet's own columns within tolerance
(electricity 5 meters + Netz Einsparung, water swap→12, oil tank incl. deliveries +
burner hours, cost category totals). Commit/revert round-trip verified on Timescale.
69 tests green (53 Core + 16 integration).
Known follow-up (polish): historical imports can contend with the 30-day compression
policy's background job; tests pause it. Consider retry-on-deadlock or deferred
compression for large historical imports in production.
Claude-Session: https://claude.ai/code/session_01WujdMtMJPbxDpDnMeK22rr
