Revert "docs(review): add risk-based read-only agent gates"

This reverts commit e9e6dede7a.

tests/test_governance.py

@@ -25,7 +25,6 @@ from setup_gitea_labels import LABELS, NoRedirect, build_plan
 from test_gitea_claim_race import PROBE_PREFIX, new_probe_branch
 from validate_agent_context import validate_manifest
 from validate_harness_governance import (
-    validate_gitea_artifacts,
     validate_markdown_links,
     validate_navigation,
     validate_repository,
@@ -64,35 +63,6 @@ class OfflineRuleTests(unittest.TestCase):
             self.assertTrue(any(item.path == "README.md" for item in findings))
             self.assertTrue(any(item.path == "docs/README.md" for item in findings))
 
-    def test_gitea_review_markers_are_required(self) -> None:
-        with tempfile.TemporaryDirectory() as directory:
-            root = Path(directory)
-            artifacts = (
-                ".gitea/ISSUE_TEMPLATE/task.md",
-                ".gitea/PULL_REQUEST_TEMPLATE.md",
-                ".gitea/workflows/harness-governance.yml",
-            )
-            for relative in artifacts:
-                source = ROOT / relative
-                target = root / relative
-                target.parent.mkdir(parents=True, exist_ok=True)
-                target.write_text(source.read_text(encoding="utf-8"), encoding="utf-8")
-            pr_template = root / ".gitea" / "PULL_REQUEST_TEMPLATE.md"
-            pr_template.write_text(
-                pr_template.read_text(encoding="utf-8").replace(
-                    "candidate_sha:", "candidate-sha:", 1
-                ),
-                encoding="utf-8",
-            )
-            findings = validate_gitea_artifacts(root)
-            self.assertTrue(
-                any(
-                    item.path == ".gitea/PULL_REQUEST_TEMPLATE.md"
-                    and "candidate_sha:" in item.message
-                    for item in findings
-                )
-            )
-
     def test_task_status_and_scope_errors_are_reported(self) -> None:
         with tempfile.TemporaryDirectory() as directory:
             root = Path(directory)