fix: resolve protobuf version conflict and stabilize API startup (v5.1b4)

connpy/_version.py

@@ -1 +1 @@
-__version__ = "5.1b3"
+__version__ = "5.1b4"

connpy/api.py

@@ -57,6 +57,12 @@ def debug_api(port=8048, config=None):
 
 def start_server(port=8048, config=None):
     try:
+        import sys
+        # Ensure project root is in path for the child process
+        base_dir = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+        if base_dir not in sys.path:
+            sys.path.insert(0, base_dir)
+            
         from connpy.grpc.server import serve
         conf = config or configfile()
         server = serve(conf, port=port, debug=False)