CI: Add `runner` workflow to call other workflows

.github/actions/godot-cache-restore/action.yml

@@ -3,19 +3,22 @@ description: Restore Godot build cache.
 inputs:
   cache-name:
     description: The cache base name (job name by default).
-    default: "${{github.job}}"
+    default: ${{ github.job }}
   scons-cache:
-    description: The scons cache path.
-    default: "${{github.workspace}}/.scons-cache/"
+    description: The SCons cache path.
+    default: ${{ github.workspace }}/.scons-cache/
+
 runs:
-  using: "composite"
+  using: composite
   steps:
-    - name: Restore .scons_cache directory
-      uses: actions/cache/restore@v3
+    - name: Restore SCons cache directory
+      uses: actions/cache/restore@v4
       with:
         path: ${{ inputs.scons-cache }}
         key: ${{ inputs.cache-name }}-${{ env.GODOT_BASE_BRANCH }}-${{ github.ref }}-${{ github.sha }}
+
         restore-keys: |
           ${{ inputs.cache-name }}-${{ env.GODOT_BASE_BRANCH }}-${{ github.ref }}-${{ github.sha }}
           ${{ inputs.cache-name }}-${{ env.GODOT_BASE_BRANCH }}-${{ github.ref }}
+          ${{ inputs.cache-name }}-${{ env.GODOT_BASE_BRANCH }}-refs/heads/${{ env.GODOT_BASE_BRANCH }}
           ${{ inputs.cache-name }}-${{ env.GODOT_BASE_BRANCH }}

.github/actions/godot-cache-save/action.yml

@@ -3,12 +3,13 @@ description: Save Godot build cache.
 inputs:
   cache-name:
     description: The cache base name (job name by default).
-    default: "${{github.job}}"
+    default: ${{ github.job }}
   scons-cache:
     description: The SCons cache path.
-    default: "${{github.workspace}}/.scons-cache/"
+    default: ${{ github.workspace }}/.scons-cache/
+
 runs:
-  using: "composite"
+  using: composite
   steps:
     - name: Save SCons cache directory
       uses: actions/cache/save@v4

.github/workflows/ci.yml

@@ -1,5 +1,6 @@
 name: Continuous integration
-on: [push, pull_request]
+on:
+  workflow_call:
 
 env:
   # Only used for the cache key. Increment version to force clean build.
@@ -91,7 +92,7 @@ jobs:
     env:
       SCONS_CACHE: ${{ github.workspace }}/.scons-cache/
       EM_VERSION: 3.1.39
-      EM_CACHE_FOLDER: "emsdk-cache"
+      EM_CACHE_FOLDER: emsdk-cache
 
     steps:
       - name: Checkout
@@ -108,24 +109,24 @@ jobs:
       - name: Set up Python (for SCons)
         uses: actions/setup-python@v5
         with:
-          python-version: '3.x'
+          python-version: 3.x
 
       - name: Android dependencies
-        if: ${{ matrix.platform == 'android' }}
+        if: matrix.platform == 'android'
         uses: nttld/setup-ndk@v1
         with:
           ndk-version: r23c
           link-to-sdk: true
 
       - name: Web dependencies
-        if: ${{ matrix.platform == 'web' }}
+        if: matrix.platform == 'web'
         uses: mymindstorm/setup-emsdk@v14
         with:
           version: ${{ env.EM_VERSION }}
           actions-cache-folder: ${{ env.EM_CACHE_FOLDER }}
 
       - name: Setup MinGW for Windows/MinGW build
-        if: ${{ matrix.platform == 'windows' && matrix.flags == 'use_mingw=yes' }}
+        if: matrix.platform == 'windows' && matrix.flags == 'use_mingw=yes'
         uses: egor-tensin/setup-mingw@v2
         with:
           version: 12.2.0
@@ -161,7 +162,7 @@ jobs:
 
       - name: Download latest Godot artifacts
         uses: dsnopek/action-download-artifact@1322f74e2dac9feed2ee76a32d9ae1ca3b4cf4e9
-        if: ${{ matrix.run-tests && env.GODOT_TEST_VERSION == 'master' }}
+        if: matrix.run-tests && env.GODOT_TEST_VERSION == 'master'
         with:
           repo: godotengine/godot
           branch: master
@@ -175,13 +176,13 @@ jobs:
           path: godot-artifacts
 
       - name: Prepare Godot artifacts for testing
-        if: ${{ matrix.run-tests && env.GODOT_TEST_VERSION == 'master' }}
+        if: matrix.run-tests && env.GODOT_TEST_VERSION == 'master'
         run: |
           chmod +x ./godot-artifacts/godot.linuxbsd.editor.x86_64.mono
           echo "GODOT=$(pwd)/godot-artifacts/godot.linuxbsd.editor.x86_64.mono" >> $GITHUB_ENV
 
       - name: Download requested Godot version for testing
-        if: ${{ matrix.run-tests && env.GODOT_TEST_VERSION != 'master' }}
+        if: matrix.run-tests && env.GODOT_TEST_VERSION != 'master'
         run: |
           wget "https://github.com/godotengine/godot-builds/releases/download/${GODOT_TEST_VERSION}/Godot_v${GODOT_TEST_VERSION}_linux.x86_64.zip" -O Godot.zip
           unzip -a Godot.zip
@@ -189,7 +190,7 @@ jobs:
           echo "GODOT=$(pwd)/Godot_v${GODOT_TEST_VERSION}_linux.x86_64" >> $GITHUB_ENV
 
       - name: Run tests
-        if: ${{ matrix.run-tests }}
+        if: matrix.run-tests
         run: |
           $GODOT --headless --version
           cd test

.github/workflows/runner.yml

@@ -0,0 +1,21 @@
+name: 🔗 GHA
+on: [push, pull_request, merge_group]
+
+concurrency:
+  group: ci-${{ github.actor }}-${{ github.head_ref || github.run_number }}-${{ github.ref }}-runner
+  cancel-in-progress: true
+
+jobs:
+  # First stage: Only static checks, fast and prevent expensive builds from running.
+
+  static-checks:
+    if: '!vars.DISABLE_GODOT_CI'
+    name: 📊 Static Checks
+    uses: ./.github/workflows/static_checks.yml
+
+  # Second stage: Run all the builds and some of the tests.
+
+  ci:
+    name: 🛠️ Continuous Integration
+    needs: static-checks
+    uses: ./.github/workflows/ci.yml

.github/workflows/static_checks.yml

@@ -1,5 +1,6 @@
 name: 📊 Static Checks
-on: [push, pull_request]
+on:
+  workflow_call:
 
 concurrency:
   group: ci-${{ github.actor }}-${{ github.head_ref || github.run_number }}-${{ github.ref }}-static