Add: preview_pages用のWorkflowを追加

.github/workflows/trigger_preview.yml

@@ -0,0 +1,23 @@
+name: "Trigger Preview Update"
+
+on:
+  pull_request_target:
+    types:
+      - opened
+      - synchronize
+      - closed
+      - reopened
+  push:
+    branches:
+      - main
+      - project-*
+
+jobs:
+  trigger:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Trigger Bot
+        run: |
+          gh workflow run -R voicevox/preview-pages update_pages.yml
+        env:
+          GH_TOKEN: ${{ secrets.PREVIEW_UPDATE_TOKEN }}

.github/workflows/update_preview.yml

@@ -0,0 +1,34 @@
+name: "Build Preview"
+on:
+  push:
+    branches:
+      - main
+      - project-*
+  pull_request:
+
+jobs:
+  update_pages:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup environment
+        uses: ./.github/actions/setup-environment
+
+      - name: Build
+        run: |
+          npm run storybook:build -- --preview-url ./
+          npm run browser:build -- --base ./
+
+          mkdir dist_preview
+          mkdir dist_preview/editor
+          mkdir dist_preview/storybook
+          cp -r dist/* dist_preview/editor/
+          cp -r storybook-static/* dist_preview/storybook/
+
+      - name: Upload artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: preview-page
+          path: dist

.gitignore

@@ -44,3 +44,6 @@ electron-builder.yml
 
 # Storybook
 storybook-static/
+
+# Preview Build Output
+dist_preview/