- Move PermissionDrawer component and types from vscode-ide-companion to webui
- Add PermissionDrawer Storybook story for documentation
- Export PermissionOption and PermissionToolCall types from webui
- Update VSCodePlatformProvider with openDiff and openTempFile handlers
- Remove duplicated components: PermissionDrawer, FileLink, types, copyUtils
- Update ToolCall components to use usePlatform hook instead of useVSCode
- Add animation keyframes to tailwind preset for slide-up effect