fix: align example config with reviewer merger separation

tests/test_config_v2_contexts.py

@@ -435,6 +435,40 @@ class ValidateConfigTests(unittest.TestCase):
         with open(example, encoding="utf-8") as fh:
             self.assertEqual(gitea_config.validate_config(json.load(fh)), [])
 
+    def test_repo_example_file_reviewer_vs_merger_boundaries(self):
+        example_path = __import__("pathlib").Path(__file__).resolve().parent.parent \
+            / "gitea-mcp.v2-contexts.example.json"
+        with open(example_path, encoding="utf-8") as fh:
+            cfg = json.load(fh)
+
+        # 1. Config includes separate reviewer and merger examples
+        self.assertIn("example-reviewer", cfg["profiles"])
+        self.assertIn("example-merger", cfg["profiles"])
+
+        reviewer = cfg["profiles"]["example-reviewer"]
+        merger = cfg["profiles"]["example-merger"]
+
+        # 2. Example reviewer config does not include merge capability
+        reviewer_allowed = reviewer.get("allowed_operations") or []
+        reviewer_forbidden = reviewer.get("forbidden_operations") or []
+
+        self.assertNotIn("merge", reviewer_allowed)
+        self.assertNotIn("gitea.pr.merge", reviewer_allowed)
+        self.assertIn("merge", reviewer_forbidden)
+
+        # 3. Example reviewer can resolve review task, cannot resolve merge task
+        # 4. Example merger can resolve merge task
+        rev_review_ok, _ = gitea_config.check_operation("gitea.pr.review", reviewer_allowed, reviewer_forbidden)
+        rev_merge_ok, _ = gitea_config.check_operation("gitea.pr.merge", reviewer_allowed, reviewer_forbidden)
+
+        merg_allowed = merger.get("allowed_operations") or []
+        merg_forbidden = merger.get("forbidden_operations") or []
+        merg_merge_ok, _ = gitea_config.check_operation("gitea.pr.merge", merg_allowed, merg_forbidden)
+
+        self.assertTrue(rev_review_ok, "example-reviewer must allow review")
+        self.assertFalse(rev_merge_ok, "example-reviewer must not allow merge")
+        self.assertTrue(merg_merge_ok, "example-merger must allow merge")
+
     def test_broken_contexts_config_reports_problems(self):
         data = contexts_config()
         data["profiles"]["prgs-author"]["context"] = "nope"