feat: complete production workflow migration

tests/test_supply_replenishment_batch.py

@@ -0,0 +1,33 @@
+from __future__ import annotations
+
+import os
+from pathlib import Path
+
+import pytest
+
+from gyxx_flow.modules.supply_chain.orchestrator.scripts import batch_process
+
+
+def test_batch_only_selects_an_xlsx_from_the_current_collection(
+    tmp_path: Path,
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
+    monkeypatch.setattr(batch_process, "DATA_DIR", tmp_path)
+    old = tmp_path / "补货建议_旧.xlsx"
+    current = tmp_path / "补货建议_本次.xlsx"
+    old.write_bytes(b"old")
+    current.write_bytes(b"current")
+    os.utime(old, (100.0, 100.0))
+    os.utime(current, (201.0, 201.0))
+
+    assert batch_process._pick_latest_xlsx(since_epoch=200.0) == current
+    assert batch_process._pick_latest_xlsx(since_epoch=202.0) is None
+
+
+def test_no_replenishment_is_encoded_as_a_successful_business_result() -> None:
+    source = (
+        Path(batch_process.__file__).with_name("ProductReplenishment.py")
+    ).read_text(encoding="utf-8-sig")
+
+    assert "completed_without_replenishment = True" in source
+    assert "return filepath or completed_without_replenishment" in source