Release v0.0.8

• dcecc7e fix(ssh): 优化SSH连接和错误处理 (Jett Wang)
• 196a78d feat: implement MCP host management tools (Jett Wang)
• 9183950 feat: improve host management and MCP error handling (Jett Wang)
• 9a8be6f feat: add host configuration management system (Jett Wang)
• 5ec5349 feat(mcp): enhance error reporting with detailed diagnostics (Jett Wang)
• 26c9e61 docs: add 'Why You Need It' section to README (Jett Wang)
• c615cbb docs: update CHANGELOG and SECURITY for v0.0.7 release (Jett Wang)