🤖 Use Depot cache for all CI jobs + centralize ImageMagick

- Release workflow now uses depot-macos-15 (was macos-latest)
- Release macOS builds now use parallel arch builds (same as build.yml)
- ImageMagick install centralized to setup-cmux action for both macOS and Linux
- Removed duplicate ImageMagick installs from build.yml and release.yml

All CI pipelines now benefit from Depot's 10x faster cache (1000 MiB/s vs 125 MB/s).

Author: ammar-agent

.github/actions/setup-cmux/action.yml

@@ -42,3 +42,15 @@ runs:
         else
           echo "ImageMagick already installed (cached)"
         fi
+
+    - name: Install ImageMagick (Linux)
+      if: runner.os == 'Linux'
+      shell: bash
+      run: |
+        if ! command -v convert &> /dev/null; then
+          echo "Installing ImageMagick..."
+          sudo apt-get update -qq
+          sudo apt-get install -y imagemagick
+        else
+          echo "ImageMagick already installed"
+        fi

.github/workflows/build.yml

@@ -56,9 +56,6 @@ jobs:
 
       - uses: ./.github/actions/setup-cmux
 
-      - name: Install ImageMagick
-        run: sudo apt-get update && sudo apt-get install -y imagemagick
-
       - name: Build application
         run: bun run build
 

.github/workflows/release.yml

@@ -10,16 +10,13 @@ permissions:
 jobs:
   build-macos:
     name: Build and Release macOS
-    runs-on: macos-latest
+    runs-on: ${{ github.repository_owner == 'coder' && 'depot-macos-15' || 'macos-latest' }}
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
 
       - uses: ./.github/actions/setup-cmux
 
-      - name: Install ImageMagick
-        run: brew install imagemagick
-
       - name: Build application
         run: bun run build
 
@@ -32,8 +29,13 @@ jobs:
           AC_APIKEY_ID: ${{ secrets.AC_APIKEY_ID }}
           AC_APIKEY_ISSUER_ID: ${{ secrets.AC_APIKEY_ISSUER_ID }}
 
-      - name: Package and publish for macOS
-        run: bun x electron-builder --mac --publish always
+      - name: Package and publish for macOS (x64)
+        run: bun x electron-builder --mac --x64 --publish always
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Package and publish for macOS (arm64)
+        run: bun x electron-builder --mac --arm64 --publish always
         env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
@@ -46,9 +48,6 @@ jobs:
 
       - uses: ./.github/actions/setup-cmux
 
-      - name: Install ImageMagick
-        run: sudo apt-get update && sudo apt-get install -y imagemagick
-
       - name: Build application
         run: bun run build