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.

skills/mobile-app/references/checklist.md

@@ -11,11 +11,11 @@ Run this before emitting `<artifact>`. P0 must pass.
 - [ ] **Tap targets ≥ 44px tall.** The seed's `.btn-primary` (48px), `.tab` (~50px), `.icon-btn` (36px ≥ touch with padding), `.list-row` (≥48px with padding) all pass. Don't ship a button under 44px.
 - [ ] **Body text ≥ 14px.** `--fs-body: 15px` already enforces this on most copy. List-row sub text uses 13px max — that's the floor.
 - [ ] **One accent, used at most twice on the screen.** Typically: one active tab + one CTA, OR one accent card + one tab. Never three.
-- [ ] **No external image URLs.** Use the `.ph-img` placeholder class. External CDN images break the OCD preview iframe and look fake when they 404.
+- [ ] **No external image URLs.** Use the `.ph-img` placeholder class. External CDN images break the OD preview iframe and look fake when they 404.
 - [ ] **Tab bar matches the screen kind.** Onboarding / detail / checkout: drop the `<nav class="tabbar">` entirely. Feed / focus / profile: keep it.
 - [ ] **Display headlines use `var(--font-display)` (serif).** The seed binds this via `.h1`, `.h2`, `.header h1`. Don't override headings to system-sans — it instantly looks like a stock template.
 - [ ] **No emoji icons in the UI.** SVG monoline only. Emoji in copy is fine ("9:41 ☀️ Tuesday" is not, but "Sunny day in Berlin" is).
-- [ ] **`data-ocd-id` on the device, content, header, and any major sections.**
+- [ ] **`data-od-id` on the device, content, header, and any major sections.**
 
 ## P1 — should pass