Third importer increment — the write path, fully testable without UI.
- commit.ts: commitBatch streams classified rows, applies insert/update per
the conflict policy via the adapter (each row in its own try/catch so valid
rows still land), records every action in import_batch_rows, and keeps live
counts on the batch header. undoBatch hard-deletes a batch's inserted rows
(port-scoped); a delete blocked by a dependent FK is reported, not forced,
and the batch flips to `undone` only when every inserted row was removed.
- import worker: replaced the no-op placeholder with the real processor —
loads the batch, re-reads the uploaded file from storage, parses, and runs
commitBatch under the batch's mapping + policy. Marks the batch failed on
error. Concurrency 1 so imports don't race each other's dedup lookups.
Tests: commit (skip/insert/error counts + per-row ledger + real inserted
entity), undo (removes exactly the inserted row, flips status), and
update-matches overwrite. 2 passing.
Engine is now functional end-to-end at the service layer: parse → map →
dry-run → commit → undo. Remaining: 4 FK adapters, API routes + permission,
wizard UI + history.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
