Refactor project name from "Open Claude Design" to "Open Design" (#1)

* 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.

* Add contributing guidelines in English and Chinese

- Introduced CONTRIBUTING.md and CONTRIBUTING.zh-CN.md to provide clear instructions for contributors.
- Outlined contribution types, local setup instructions, and merging criteria for skills and design systems.
- Enhanced README files to reference the new contributing guidelines.

package-lock.json

@@ -1,11 +1,11 @@
 {
-  "name": "open-claude-design",
+  "name": "open-design",
   "version": "0.1.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
-      "name": "open-claude-design",
+      "name": "open-design",
       "version": "0.1.0",
       "dependencies": {
         "@anthropic-ai/sdk": "^0.32.1",
@@ -16,7 +16,7 @@
         "react-dom": "^18.3.1"
       },
       "bin": {
-        "ocd": "daemon/cli.js"
+        "od": "daemon/cli.js"
       },
       "devDependencies": {
         "@types/react": "^18.3.12",