feat: expand MCP server tools for PR and label management, add helper CLI scripts

Closes #7

tests/test_mcp_server.py

@@ -18,6 +18,10 @@ from mcp_server import (  # noqa: E402
     gitea_view_issue,
     gitea_mark_issue,
     gitea_mirror_refs,
+    gitea_list_prs,
+    gitea_view_pr,
+    gitea_merge_pr,
+    gitea_delete_branch,
 )
 
 FAKE_AUTH = "Basic dGVzdDp0ZXN0"
@@ -240,5 +244,83 @@ class TestMirrorRefs(unittest.TestCase):
         self.assertIn("--force", args)
 
 
+# ---------------------------------------------------------------------------
+# List PRs
+# ---------------------------------------------------------------------------
+class TestListPRs(unittest.TestCase):
+
+    @patch("mcp_server.api_request")
+    @patch("mcp_server.get_auth_header", return_value=FAKE_AUTH)
+    def test_list_prs(self, _auth, mock_api):
+        mock_api.return_value = [
+            {
+                "number": 1, "title": "PR 1", "state": "open",
+                "head": {"ref": "branch1"}, "base": {"ref": "main"},
+                "html_url": "http://url1", "mergeable": True
+            }
+        ]
+        result = gitea_list_prs()
+        self.assertEqual(len(result), 1)
+        self.assertEqual(result[0]["number"], 1)
+        self.assertEqual(result[0]["head"], "branch1")
+
+
+# ---------------------------------------------------------------------------
+# View PR
+# ---------------------------------------------------------------------------
+class TestViewPR(unittest.TestCase):
+
+    @patch("mcp_server.api_request")
+    @patch("mcp_server.get_auth_header", return_value=FAKE_AUTH)
+    def test_view_pr(self, _auth, mock_api):
+        mock_api.return_value = {
+            "number": 1, "title": "PR 1", "state": "open",
+            "head": {"ref": "branch1"}, "base": {"ref": "main"},
+            "html_url": "http://url1", "mergeable": True, "body": "description",
+            "user": {"login": "user1"}
+        }
+        result = gitea_view_pr(pr_number=1)
+        self.assertEqual(result["number"], 1)
+        self.assertEqual(result["body"], "description")
+        self.assertEqual(result["user"], "user1")
+
+
+# ---------------------------------------------------------------------------
+# Merge PR
+# ---------------------------------------------------------------------------
+class TestMergePR(unittest.TestCase):
+
+    @patch("mcp_server.api_request")
+    @patch("mcp_server.get_auth_header", return_value=FAKE_AUTH)
+    def test_merge_pr(self, _auth, mock_api):
+        mock_api.return_value = {}
+        result = gitea_merge_pr(pr_number=1, do="squash", title="T", message="M", force=True)
+        self.assertTrue(result["success"])
+        self.assertIn("merged", result["message"])
+        # Check payload
+        payload = mock_api.call_args[0][3]
+        self.assertEqual(payload["Do"], "squash")
+        self.assertEqual(payload["MergeTitleField"], "T")
+        self.assertEqual(payload["MergeMessageField"], "M")
+        self.assertEqual(payload["force_merge"], True)
+
+
+# ---------------------------------------------------------------------------
+# Delete Branch
+# ---------------------------------------------------------------------------
+class TestDeleteBranch(unittest.TestCase):
+
+    @patch("mcp_server.api_request")
+    @patch("mcp_server.get_auth_header", return_value=FAKE_AUTH)
+    def test_delete_branch(self, _auth, mock_api):
+        mock_api.return_value = {}
+        result = gitea_delete_branch(branch="feat/branch")
+        self.assertTrue(result["success"])
+        self.assertIn("deleted", result["message"])
+        # Check url encoding of branch name
+        url = mock_api.call_args[0][1]
+        self.assertIn("feat%2Fbranch", url)
+
+
 if __name__ == "__main__":
     unittest.main()