test: isolate git identity in CI

tests/test_rein_aharness.py

@@ -11,6 +11,18 @@ from glas_harness.reins.rein_aharness import ReinAharness, ReinAharnessNotInstal
 from glas_harness.transport import ExecutionTransport, TransportError
 
 
+def _init_repo(repo) -> None:
+    repo.mkdir()
+    subprocess.run(["git", "init", "-q"], cwd=repo, check=True)
+    subprocess.run(["git", "config", "user.name", "Glas Harness Tests"], cwd=repo, check=True)
+    subprocess.run(
+        ["git", "config", "user.email", "glas-harness-tests@example.invalid"],
+        cwd=repo,
+        check=True,
+    )
+    subprocess.run(["git", "commit", "-q", "--allow-empty", "-m", "init"], cwd=repo, check=True)
+
+
 def test_is_rein_subclass() -> None:
     assert issubclass(ReinAharness, Rein)
 
@@ -25,9 +37,7 @@ def test_bin_raises_if_not_installed() -> None:
 
 def test_start_session_writes_task_file_and_captures_head(tmp_path) -> None:
     repo = tmp_path / "repo"
-    repo.mkdir()
-    subprocess.run(["git", "init", "-q"], cwd=repo, check=True)
-    subprocess.run(["git", "commit", "-q", "--allow-empty", "-m", "init"], cwd=repo, check=True)
+    _init_repo(repo)
 
     rein = ReinAharness()
     sandbox = SandboxHandle(
@@ -97,9 +107,7 @@ def test_dispatch_tool_reports_failure() -> None:
 
 def test_end_session_detects_new_commit(tmp_path) -> None:
     repo = tmp_path / "repo"
-    repo.mkdir()
-    subprocess.run(["git", "init", "-q"], cwd=repo, check=True)
-    subprocess.run(["git", "commit", "-q", "--allow-empty", "-m", "init"], cwd=repo, check=True)
+    _init_repo(repo)
 
     rein = ReinAharness()
     head_before = subprocess.run(
@@ -126,9 +134,7 @@ def test_end_session_detects_new_commit(tmp_path) -> None:
 
 def test_end_session_no_new_commit(tmp_path) -> None:
     repo = tmp_path / "repo"
-    repo.mkdir()
-    subprocess.run(["git", "init", "-q"], cwd=repo, check=True)
-    subprocess.run(["git", "commit", "-q", "--allow-empty", "-m", "init"], cwd=repo, check=True)
+    _init_repo(repo)
 
     rein = ReinAharness()
     head = subprocess.run(

tests/test_rein_openweights.py

@@ -11,6 +11,18 @@ from glas_harness.reins.rein_openweights import ReinOpenWeights, ReinOpenWeights
 from glas_harness.transport import ExecutionTransport, TransportError
 
 
+def _init_repo(repo) -> None:
+    repo.mkdir()
+    subprocess.run(["git", "init", "-q"], cwd=repo, check=True)
+    subprocess.run(["git", "config", "user.name", "Glas Harness Tests"], cwd=repo, check=True)
+    subprocess.run(
+        ["git", "config", "user.email", "glas-harness-tests@example.invalid"],
+        cwd=repo,
+        check=True,
+    )
+    subprocess.run(["git", "commit", "-q", "--allow-empty", "-m", "init"], cwd=repo, check=True)
+
+
 def test_is_rein_subclass() -> None:
     assert issubclass(ReinOpenWeights, Rein)
 
@@ -25,9 +37,7 @@ def test_bin_raises_if_not_installed() -> None:
 
 def test_start_session_writes_task_file_and_captures_head(tmp_path) -> None:
     repo = tmp_path / "repo"
-    repo.mkdir()
-    subprocess.run(["git", "init", "-q"], cwd=repo, check=True)
-    subprocess.run(["git", "commit", "-q", "--allow-empty", "-m", "init"], cwd=repo, check=True)
+    _init_repo(repo)
 
     rein = ReinOpenWeights()
     sandbox = SandboxHandle(
@@ -129,9 +139,7 @@ def test_dispatch_tool_enforces_outer_timeout() -> None:
 
 def test_end_session_detects_new_commit(tmp_path) -> None:
     repo = tmp_path / "repo"
-    repo.mkdir()
-    subprocess.run(["git", "init", "-q"], cwd=repo, check=True)
-    subprocess.run(["git", "commit", "-q", "--allow-empty", "-m", "init"], cwd=repo, check=True)
+    _init_repo(repo)
 
     rein = ReinOpenWeights()
     head_before = subprocess.run(