fix(gtea): ruff format + check all gtea files and bridge.py

Clears cc-ci self-test lint failures:
- ruff format: 9 files reformatted (all gtea test files + test_discovery.py)
- ruff check --fix: bridge.py UP017 (datetime.UTC alias) + 6 gtea check errors
- manifest.py B007: rename unused loop variable path → _path (no auto-fix available)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

tests/gitea/custom/test_git_push.py

@@ -21,10 +21,10 @@ import urllib.request
 
 sys.path.insert(0, os.path.join(os.path.dirname(__file__), "..", "..", "..", "runner"))
 sys.path.insert(0, os.path.join(os.path.dirname(__file__), ".."))
-from ops import admin_creds  # noqa: E402
-
 import ssl
 
+from ops import admin_creds  # noqa: E402
+
 _CTX = ssl.create_default_context()
 _CTX.check_hostname = False
 _CTX.verify_mode = ssl.CERT_NONE
@@ -72,9 +72,12 @@ def test_git_push(live_app):
 
     # 1. Create test repo (auto_init adds an initial commit so the branch exists)
     status, body = _api(
-        live_app, "/user/repos", method="POST",
+        live_app,
+        "/user/repos",
+        method="POST",
         body={"name": repo_name, "private": False, "auto_init": True, "default_branch": "main"},
-        user=user, password=password,
+        user=user,
+        password=password,
     )
     assert status == 201, f"repo create HTTP {status}: {body}"
     # Embed credentials directly in the URL (password is 32-char hex, URL-safe).
@@ -107,14 +110,14 @@ def test_git_push(live_app):
 
         # 5. Verify commit landed via API
         status, commits = _api(
-            live_app, f"/repos/{user}/{repo_name}/commits?limit=1",
-            user=user, password=password,
+            live_app,
+            f"/repos/{user}/{repo_name}/commits?limit=1",
+            user=user,
+            password=password,
         )
         assert status == 200 and commits, f"commit list HTTP {status}: {commits}"
         commit_msg = commits[0].get("commit", {}).get("message", "").strip()
-        assert "automated push test" in commit_msg, (
-            f"Unexpected commit message: {commit_msg!r}"
-        )
+        assert "automated push test" in commit_msg, f"Unexpected commit message: {commit_msg!r}"
     finally:
         shutil.rmtree(tmpdir, ignore_errors=True)  # removes parent + repo subdir
         # 6. Cleanup — delete the test repo