Enhance CSV metadata with error tracking for mosaics and tiles

tests/test_settings.py

@@ -7,6 +7,8 @@ import yaml
 
 from spruce.settings import (
     MAX_SAFE_WORKERS,
+    SCANS_CSV_FIELDS,
+    TILES_CSV_FIELDS,
     _clamp_workers,
     load_config,
 )
@@ -91,3 +93,24 @@ def test_load_config_missing_password_exits(tmp_path):
     path.write_text(yaml.dump({"username": "x"}))
     with pytest.raises(SystemExit):
         load_config(str(path))
+
+
+# ---------------------------------------------------------------------------
+# CSV schemas (failure columns)
+# ---------------------------------------------------------------------------
+
+
+def test_scans_csv_fields_includes_mosaic_failure_columns():
+    for name in (
+        "mosaic_download_status",
+        "mosaic_error",
+        "mosaic_error_code",
+        "mosaic_error_class",
+    ):
+        assert name in SCANS_CSV_FIELDS
+
+
+def test_tiles_csv_fields_includes_status_and_error_columns():
+    for name in ("status", "error", "error_code", "error_class"):
+        assert name in TILES_CSV_FIELDS
+    assert TILES_CSV_FIELDS.index("status") < TILES_CSV_FIELDS.index("downloaded_at")