fix(harness): ignore dotted email local parts in artifact inference

src/agent_evidence.py

@@ -255,11 +255,13 @@ def _artifact_match_is_callable(instruction: str, match: re.Match[str], path: st
 
 
 def _artifact_match_is_email_host(instruction: str, match: re.Match[str]) -> bool:
-    """Reject the domain portion of an email address as an output path."""
+    """Reject either dotted portion of an email address as an output path."""
 
     start = match.start("path")
     prefix = instruction[max(0, start - 80):start]
-    return bool(re.search(r"[A-Za-z0-9_.+-]+@$", prefix))
+    return instruction[match.end("path"):].startswith("@") or bool(
+        re.search(r"[A-Za-z0-9_.+-]+@$", prefix)
+    )
 
 
 def _workspace_path_identity(value: str) -> str:

tests/test_agent_evidence.py

@@ -21,6 +21,13 @@ def test_infers_only_explicit_output_or_edit_paths():
     assert requirements.verifier_required is True
 
 
+def test_email_address_is_not_an_output_artifact():
+    requirements = infer_completion_requirements(
+        "Write a summary and email it to jane.doe@example.com."
+    )
+    assert requirements.required_artifacts == ()
+
+
 def test_known_workspace_inputs_are_not_inferred_as_output_artifacts():
     requirements = infer_completion_requirements(
         "My clues are saved in /tmp_workspace/inputs/clues.md, the required answer "