chore: refine command extraction and tests

Co-authored-by: BukeLy <19304666+BukeLy@users.noreply.github.com>

Author: Copilot

agent-sdk-client/config.py

@@ -22,7 +22,8 @@ def extract_command(text: Optional[str]) -> Optional[str]:
     command = trimmed.split()[0]
     if '@' in command:
         command = command.split('@', 1)[0]
-    if not command:
+    command = command.strip()
+    if not command or command == '/':
         return None
     return command
 

tests/test_command_whitelist.py

@@ -1,17 +1,12 @@
-import importlib.util
+import runpy
 from pathlib import Path
 
 import pytest
 
 CLIENT_CONFIG_PATH = Path(__file__).resolve().parent.parent / "agent-sdk-client" / "config.py"
-
-spec = importlib.util.spec_from_file_location("client_config", CLIENT_CONFIG_PATH)
-config_module = importlib.util.module_from_spec(spec)
-assert spec and spec.loader
-spec.loader.exec_module(config_module)
-
-Config = config_module.Config
-load_command_whitelist = config_module.load_command_whitelist
+config_module = runpy.run_path(CLIENT_CONFIG_PATH)
+Config = config_module["Config"]
+load_command_whitelist = config_module["load_command_whitelist"]
 
 
 def test_load_command_whitelist(tmp_path):
@@ -32,6 +27,8 @@ def test_load_command_whitelist(tmp_path):
         ("/allowed", True),
         ("/allowed extra args", True),
         ("/allowed@bot", True),
+        ("/@bot", True),
+        ("/", True),
         ("/blocked", False),
         (" /blocked ", False),
     ],