Refactor project name from "Open Claude Design" to "Open Design"

- Updated project name in package.json, package-lock.json, and README files.
- Changed CLI commands and references from "ocd" to "od".
- Adjusted file structure references in documentation and code to reflect new naming conventions.
- Enhanced .gitignore to include new runtime data files.
- Updated metadata in LICENSE file to match new project name.

src/i18n/index.tsx

@@ -21,7 +21,7 @@ const DICTS: Record<Locale, Dict> = {
   'zh-CN': zhCN,
 };
 
-const LS_KEY = 'open-claude-design:locale';
+const LS_KEY = 'open-design:locale';
 
 // First-run default is English. We honor an explicit user pick saved to
 // localStorage but never auto-detect from `navigator.language`, so the