refactor(plugins): 插件短名并统一 MCP tool 为 {plugin}-{tool}

fix(plugins): 修复 browser_mcp 和 ocr 插件

feat(browser_mcp_plugin): 升级 v2.0 — Lightpanda + Playwright 双驱动 MCP 插件

Refactor video audio extractor plugin and enhance functionality

test: 补齐插件平台契约测试

chore: cleanup deprecated files and update documentation

test(mcp): add unit tests for decorators and plugin_registry