feat: add PR review and edit tools to CLI and MCP server

tests/test_prs.py

@@ -10,6 +10,7 @@ sys.path.insert(0, str(__import__("pathlib").Path(__file__).resolve().parent.par
 import list_prs  # noqa: E402
 import view_pr  # noqa: E402
 import delete_branch  # noqa: E402
+import edit_pr  # noqa: E402
 
 
 FAKE_CREDS = "Basic dGVzdHVzZXI6dGVzdHBhc3M="
@@ -64,5 +65,36 @@ class TestDeleteBranch(unittest.TestCase):
             delete_branch.main([])
 
 
+class TestEditPR(unittest.TestCase):
+
+    @patch("edit_pr.api_request")
+    @patch("edit_pr.get_auth_header", return_value=FAKE_CREDS)
+    def test_edit_pr_success(self, _auth, mock_api):
+        mock_api.return_value = {
+            "number": 1,
+            "title": "New Title",
+            "state": "open",
+            "html_url": "http://url1",
+            "base": {"ref": "main"},
+            "body": "New Description"
+        }
+        rc = edit_pr.main(["1", "--title", "New Title", "--body", "New Description"])
+        self.assertEqual(rc, 0)
+        mock_api.assert_called_once()
+        # Verify call payload
+        payload = mock_api.call_args[0][3]
+        self.assertEqual(payload["title"], "New Title")
+        self.assertEqual(payload["body"], "New Description")
+
+    @patch("edit_pr.get_auth_header", return_value=FAKE_CREDS)
+    def test_missing_fields_fails(self, _auth):
+        rc = edit_pr.main(["1"])
+        self.assertEqual(rc, 1)
+
+    def test_missing_pr_number_exits(self):
+        with self.assertRaises(SystemExit):
+            edit_pr.main([])
+
+
 if __name__ == "__main__":
     unittest.main()