Title: Implement minimal core framework with PL injection and update build config

Key features implemented:
- Updated package metadata and dependencies in PKG-INFO, setup files
- Added main.py entry point for backward compatibility with README launch method
- Enhanced CLI with config options, system info command, and proper signal handling
- Implemented minimal PluginManager loading only plugin-loader core plugin
- Refactored PluginLoader to follow minimal core design, removed sandbox/isolation complexity
- Updated auto-dependency plugin with safer PL injection mechanism and disabled pl_injection
- Removed legacy plugin files (firewall, frp_proxy, ftp_server, multi_lang_deploy, ops_toolbox, security_gateway) as functionality moved to core plugin system
- Improved gitignore with comprehensive ignore patterns

The changes implement a minimal core framework design where only the plugin-loader is directly loaded by the core, with all other plugins managed through the PL injection mechanism, significantly simplifying the architecture.

store/@{FutureOSS}/plugin-loader-pro/isolation/timeout.py

@@ -0,0 +1,29 @@
+"""超时控制"""
+import signal
+
+
+class TimeoutError(Exception):
+    """超时错误"""
+    pass
+
+
+class TimeoutController:
+    """超时控制器"""
+
+    def __init__(self, timeout: int = 30):
+        self.timeout = timeout
+
+    def execute_with_timeout(self, func, *args, **kwargs) -> any:
+        """在超时限制内执行函数"""
+        def handler(signum, frame):
+            raise TimeoutError(f"执行超时 (>{self.timeout}s)")
+
+        old_handler = signal.signal(signal.SIGALRM, handler)
+        signal.alarm(self.timeout)
+
+        try:
+            result = func(*args, **kwargs)
+            signal.alarm(0)
+            return result
+        finally:
+            signal.signal(signal.SIGALRM, old_handler)