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.

src/types.ts

@@ -86,8 +86,17 @@ export interface SkillSummary {
   upstream: string | null;
   /** Lower number = higher priority in the Examples gallery. `null` keeps
    *  the skill in its natural alphabetical position below all featured
-   *  entries. Set via `ocd.featured` in the SKILL.md frontmatter. */
+   *  entries. Set via `od.featured` in the SKILL.md frontmatter. */
   featured?: number | null;
+  /** Optional metadata hints, parsed from `od.fidelity`,
+   *  `od.speaker_notes`, and `od.animations` in SKILL.md. Used by the
+   *  Examples gallery's "Use this prompt" fast-create path to mirror the
+   *  shipped `example.html` (e.g. wireframe-sketch declares
+   *  `fidelity: wireframe`). Missing hints fall back to the same defaults
+   *  the new-project form would apply. */
+  fidelity?: 'wireframe' | 'high-fidelity' | null;
+  speakerNotes?: boolean | null;
+  animations?: boolean | null;
   hasBody: boolean;
   examplePrompt: string;
 }