refactor: Reorganize GitHub Actions for better reusability (#5949)

## Summary

This PR refactors the GitHub Actions workflow structure to improve
reusability, maintainability, and CI performance.

## Changes

### New Actions
- **setup-comfyui-server**: New composite action that handles ComfyUI
server setup and launch
  - Checks out ComfyUI repository
  - Installs ComfyUI_devtools custom node
  - Sets up Python environment and dependencies
  - Optionally launches the server with configurable parameters

### Refactored Actions
- **setup-frontend**: Simplified to focus only on frontend-specific
tasks
  - Installs pnpm and Node.js
  - Installs dependencies
- Optionally builds the frontend (can be skipped when using cached
builds)
  - No longer handles server setup or checkout

### Workflow Improvements

#### tests-ci.yaml
- Introduced a setup job that builds once and caches the entire
workspace
- Test jobs now restore the cached workspace instead of rebuilding
- Eliminated redundant setup steps in each test shard
- Better separation between setup and test execution phases
- Significant performance improvement through workspace caching

#### Locale Update Workflows
- Updated `update-locales.yaml` to use the new action structure
- Updated `update-locales-for-given-custom-node-repository.yaml` with
proper custom node installation
- Updated `update-node-definitions-locales.yaml` to use new actions
- Removed `working-directory` references where appropriate

#### Other Workflows
- Updated `update-playwright-expectations.yaml` to use new action
structure
- Consistent action usage across all workflows

## Benefits

1. **Better Performance**: Workspace caching eliminates redundant builds
in CI, significantly reducing test execution time
2. **Improved Maintainability**: Clear separation of concerns makes
actions easier to understand and modify
3. **Enhanced Reusability**: Actions can be composed in different ways
for different workflows
4. **DRY Principle**: Eliminated code duplication across workflows
5. **Easier Debugging**: Smaller, focused actions make it easier to
identify and fix issues

## Testing

- [ ] Verify tests-ci workflow runs successfully
- [ ] Verify locale update workflows function correctly
- [ ] Verify playwright expectations update workflow works
- [ ] Confirm cache/restore mechanism works as expected

## Related Issues

This refactoring addresses workflow complexity and reduces CI runtime by
leveraging GitHub Actions caching more effectively.

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-5949-refactor-Reorganize-GitHub-Actions-for-better-reusability-2846d73d365081ae8e16f151423b5a88)
by [Unito](https://www.unito.io)

---------

Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: Alexander Brown <drjkl@comfy.org>
Co-authored-by: DrJKL <DrJKL0424@gmail.com>

.github/actions/setup-comfyui-server/action.yml

@@ -0,0 +1,55 @@
+name: Setup ComfyUI Server
+description: 'Setup ComfyUI server for continuous integration (with ComfyUI_devtools node installed)'
+inputs:
+  extra_server_params:
+    description: 'Additional parameters to pass to ComfyUI server'
+    required: false
+    default: ''
+  launch_server:
+    description: 'Whether to launch the server after setup'
+    required: false
+    default: 'false'
+runs:
+  using: 'composite'
+  steps:
+    # Note: this workflow assume frontend repo is checked out and is built in ../dist
+
+    # Checkout ComfyUI repo, install the dev_tools node and start server
+    - name: Checkout ComfyUI
+      uses: actions/checkout@v5
+      with:
+        repository: 'comfyanonymous/ComfyUI'
+        path: 'ComfyUI'
+
+    - name: Install ComfyUI_devtools from frontend repo
+      shell: bash
+      run: |
+        mkdir -p ComfyUI/custom_nodes/ComfyUI_devtools
+        if ! cp -r ./tools/devtools/* ComfyUI/custom_nodes/ComfyUI_devtools/; then
+          echo "::error::Failed to copy ComfyUI_devtools from ./tools/devtools/"
+          echo "::error::This action assumes the ComfyUI_frontend repository is checked out in the current working directory."
+          echo "::error::Please ensure you have run 'actions/checkout@v5' before calling this action."
+          exit 1
+        fi
+
+    - name: Setup Python
+      uses: actions/setup-python@v4
+      with:
+        python-version: '3.10'
+
+    - name: Install Python requirements
+      shell: bash
+      working-directory: ComfyUI
+      run: |
+        python -m pip install --upgrade pip
+        pip install torch torchvision torchaudio --index-url https://download.pytorch.org/whl/cpu
+        pip install -r requirements.txt
+        pip install wait-for-it
+
+    - name: Start ComfyUI server
+      if: ${{ inputs.launch_server == 'true' }}
+      shell: bash
+      working-directory: ComfyUI
+      run: |
+        python main.py --cpu --multi-user --front-end-root ../dist ${{ inputs.extra_server_params }} &
+        wait-for-it --service 127.0.0.1:8188 -t 600

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

@@ -1,30 +1,16 @@
-name: Setup Frontend
-description: 'Setup ComfyUI frontend development environment'
+name: Setup ComfyUI Frontend
+description: 'Install nodejs/pnpm/dependencies and optionally build ComfyUI_frontend'
 inputs:
-  extra_server_params:
-    description: 'Additional parameters to pass to ComfyUI server'
+  include_build_step:
+    description: 'Include the build step to build the frontend. Set to true for workflows that need a built frontend'
     required: false
-    default: ''
+    default: 'false'
 runs:
   using: 'composite'
   steps:
-    - name: Checkout ComfyUI
-      uses: actions/checkout@v5
-      with:
-        repository: 'comfyanonymous/ComfyUI'
-        path: 'ComfyUI'
-
-    - name: Checkout ComfyUI_frontend
-      uses: actions/checkout@v5
-      with:
-        path: 'ComfyUI_frontend'
-
-    - name: Copy ComfyUI_devtools from frontend repo
-      shell: bash
-      run: |
-        mkdir -p ComfyUI/custom_nodes/ComfyUI_devtools
-        cp -r ComfyUI_frontend/tools/devtools/* ComfyUI/custom_nodes/ComfyUI_devtools/
+    # Note: this workflow assume frontend repo is checked out in the root of the workspace
 
+    # Install pnpm, Node.js, build frontend
     - name: Install pnpm
       uses: pnpm/action-setup@v4
       with:
@@ -35,32 +21,25 @@ runs:
       with:
         node-version: 'lts/*'
         cache: 'pnpm'
-        cache-dependency-path: 'ComfyUI_frontend/pnpm-lock.yaml'
+        cache-dependency-path: './pnpm-lock.yaml'
 
-    - name: Setup Python
-      uses: actions/setup-python@v4
+    # Restore tool caches before running any build/lint operations
+    - name: Restore tool output cache
+      uses: actions/cache/restore@v4
       with:
-        python-version: '3.10'
+        path: |
+          ./.cache
+          ./tsconfig.tsbuildinfo
+        key: tool-cache-${{ runner.os }}-${{ hashFiles('./pnpm-lock.yaml') }}-${{ hashFiles('./src/**/*.{ts,vue,js,mts}', './*.config.*') }}
+        restore-keys: |
+          tool-cache-${{ runner.os }}-${{ hashFiles('./pnpm-lock.yaml') }}-
+          tool-cache-${{ runner.os }}-
 
-    - name: Install Python requirements
+    - name: Install dependencies
       shell: bash
-      working-directory: ComfyUI
-      run: |
-        python -m pip install --upgrade pip
-        pip install torch torchvision torchaudio --index-url https://download.pytorch.org/whl/cpu
-        pip install -r requirements.txt
-        pip install wait-for-it
+      run: pnpm install --frozen-lockfile
 
-    - name: Build & Install ComfyUI_frontend
+    - name: Build ComfyUI_frontend
+      if: ${{ inputs.include_build_step == 'true' }}
       shell: bash
-      working-directory: ComfyUI_frontend
-      run: |
-        pnpm install --frozen-lockfile
-        pnpm build
-
-    - name: Start ComfyUI server
-      shell: bash
-      working-directory: ComfyUI
-      run: |
-        python main.py --cpu --multi-user --front-end-root ../ComfyUI_frontend/dist ${{ inputs.extra_server_params }} &
-        wait-for-it --service 127.0.0.1:8188 -t 600
+      run: pnpm build

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

@@ -6,7 +6,6 @@ runs:
     - name: Detect Playwright version
       id: detect-version
       shell: bash
-      working-directory: ComfyUI_frontend
       run: |
         PLAYWRIGHT_VERSION=$(pnpm ls @playwright/test --json | jq --raw-output '.[0].devDependencies["@playwright/test"].version')
         echo "playwright-version=$PLAYWRIGHT_VERSION" >> $GITHUB_OUTPUT
@@ -22,10 +21,8 @@ runs:
       if: steps.cache-playwright-browsers.outputs.cache-hit != 'true'
       shell: bash
       run: pnpm exec playwright install chromium --with-deps
-      working-directory: ComfyUI_frontend
 
     - name: Install Playwright Browsers (operating system dependencies)
       if: steps.cache-playwright-browsers.outputs.cache-hit == 'true'
       shell: bash
       run: pnpm exec playwright install-deps
-      working-directory: ComfyUI_frontend