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/models/plugin_info.py

@@ -0,0 +1,30 @@
+"""插件信息模型"""
+from typing import Any
+
+
+class PluginInfo:
+    """插件信息"""
+    def __init__(self):
+        self.name: str = ""
+        self.version: str = ""
+        self.author: str = ""
+        self.description: str = ""
+        self.readme: str = ""
+        self.config: dict[str, Any] = {}
+        self.extensions: dict[str, Any] = {}
+        self.lifecycle: Any = None
+        self.capabilities: set[str] = set()
+        self.dependencies: list[str] = []
+        self.status: str = "idle"  # idle, running, stopped, error
+        self.error_count: int = 0
+        self.last_error: str = ""
+
+    def to_dict(self) -> dict:
+        return {
+            "name": self.name,
+            "version": self.version,
+            "author": self.author,
+            "description": self.description,
+            "status": self.status,
+            "error_count": self.error_count
+        }