Four Layer Todo 0.1.8

What's new\n- English interface with automatic, Chinese, and English language selection\n- Existing Chinese task data, folders, frontmatter, and internal values remain compatible\n- Localized guided sample content and English documentation\n- Fixed whiteboard height inheritance and updated Obsidian 1.13 settings compatibility\n- Synchronized pnpm lockfile with the fixed Preact 10.29.8 dependency\n- Declare Obsidian 1.13.0 as the minimum supported version for the APIs used\n\n## Validation\n- npm run build\n- node --check main.js\n- npm audit --audit-level=high\n- Obsidian runtime reload and language-switch task-count check