🚧 Add file time information in commit message

tests/unit/test_lock_config_message.py

@@ -3,6 +3,7 @@
 from __future__ import annotations
 
 import datetime as dt
+import re
 from pathlib import Path
 
 import pytest
@@ -152,6 +153,7 @@ class TestCommitMessage:
                 ChangeRecord(
                     path="Stations/PS101/project.xml",
                     change_type=ChangeType.MODIFIED,
+                    file_timestamp=dt.datetime(2026, 9, 11, 6, 42, 9, tzinfo=dt.UTC),
                     author=AuthorIdentity(
                         identifier="DOMAIN\\jsmith",
                         source="scada_audit_log",
@@ -175,6 +177,13 @@ class TestCommitMessage:
         assert "Added: 1" in message
         assert "Last modified by: DOMAIN\\jsmith" in message
         assert "Last modified by: UNKNOWN" in message
+        # Filesystem mtime rendered as 'Modified at' in local time with offset
+        assert "    Modified at: " in message
+        assert re.search(
+            r"Modified at: \d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}[+-]\d{2}:\d{2}\b", message
+        )
+        # Resolver-provided timestamp kept as a separate 'Changed at' line
+        assert "    Changed at: " in message
         assert "Stations/PS027/old.xml" in message
         # Trailers last (Section 36)
         assert "Tracker-Version: 1.0.0" in message