fix: resolve test suite regressions and conn helper discovery error

test_mcp_conn.py

@@ -10,7 +10,7 @@ import os
 import subprocess
 import sys
 
-def test_connection(name, config):
+def run_connection_test(name, config):
     print(f"Testing MCP connection for '{name}'...")
     command = config.get("command")
     args = config.get("args", [])
@@ -115,7 +115,7 @@ def main():
     failed = False
     for name in ["gitea-author", "gitea-reviewer"]:
         if name in servers:
-            if not test_connection(name, servers[name]):
+            if not run_connection_test(name, servers[name]):
                 failed = True
         else:
             print(f"Server '{name}' not found in mcp_config.json")