# TASK 3.1: Add CLI Command for Synthetic KDS Sync

## Summary

Add an explicit CLI command that runs the synthetic KDS feed for local/dev validation.

The command should invoke the reusable feed service. It must not contain the full feed implementation inline.

## Dependencies

- TASK 2.2 (idempotency, checkpoint, and full-refresh behavior)

## Files to Create

### 1. CLI command in `backend/Kds.Ai.Cli`

Create a command equivalent to:

```text
sync-synthetic-kds --tenant-id <tenant_id> --store-guid <store_guid> [--full-refresh]
```

The exact command group/name may differ, but it must clearly indicate that this is synthetic/bootstrap infrastructure.

## Files to Modify

### 2. CLI registration/wiring

Wire the command into the CLI command registration and dependency injection path.

## Required Behavior

The command must:

- accept `tenant_id`,
- accept source `store_guid`,
- accept full-refresh mode,
- optionally support incremental mode by default,
- invoke the reusable synthetic feed service,
- print target tenant/database context,
- print row counts for orders and order items,
- print batch/checkpoint summary when available,
- return a non-zero exit code or clear error on failure.

The command must not:

- accept `tenant_database` as a normal replacement for `tenant_id`,
- write directly to Redshift without the feed service,
- trigger anomaly detector runtime behavior,
- migrate monitor specs.

## Acceptance Criteria

- [x] CLI command exists for synthetic KDS sync
- [x] Command accepts `tenant_id`
- [x] Command accepts source `store_guid`
- [x] Command supports full-refresh mode
- [x] Command invokes the reusable feed service
- [x] Command prints useful row counts and target context
- [x] Command fails clearly for missing or inactive tenant mappings
- [x] Command is clearly named/described as synthetic/bootstrap infrastructure
- [x] Solution builds without errors

## Notes

- Keep command output concise but operationally useful.
- Do not hide tenant routing errors behind generic failures.
- This command is a dev/admin execution adapter, not the final ETL runtime.