fix: CI release workflow — remove broken dashboard build, fix macos runner

- Remove pnpm dashboard build step from release.yml and ci.yml
  (dashboard build output is committed to git, embedded via include_dir!)
- Fix macos-13 → macos-14 (macos-13 runners deprecated)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.github/workflows/ci.yml

@@ -47,42 +47,18 @@ jobs:
       - name: Test
         run: cargo test --workspace
 
-  dashboard:
-    name: Dashboard Build
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: Install pnpm
-        uses: pnpm/action-setup@v4
-        with:
-          version: 10
-
-      - name: Install Node.js
-        uses: actions/setup-node@v4
-        with:
-          node-version: 22
-          cache: pnpm
-          cache-dependency-path: pnpm-lock.yaml
-
-      - name: Install dependencies
-        run: pnpm install --frozen-lockfile
-
-      - name: Build dashboard
-        run: pnpm --filter dashboard build
-
   release-build:
     name: Release Build (${{ matrix.target }})
     runs-on: ${{ matrix.os }}
     if: github.ref == 'refs/heads/main'
-    needs: [test, dashboard]
+    needs: [test]
     strategy:
       fail-fast: false
       matrix:
         include:
           - os: macos-latest
             target: aarch64-apple-darwin
-          - os: macos-13
+          - os: macos-14
             target: x86_64-apple-darwin
           - os: ubuntu-latest
             target: x86_64-unknown-linux-gnu