initial commit, 4.5 stable

.github/workflows/static_checks.yml

@@ -0,0 +1,46 @@
+name: 📊 Static Checks
+on:
+  workflow_call:
+
+jobs:
+  static-checks:
+    name: Code style, file formatting, and docs
+    runs-on: ubuntu-24.04
+    timeout-minutes: 30
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 2
+
+      # This needs to happen before Python and npm execution; it must happen before any extra files are written.
+      - name: .gitignore checks (gitignore_check.sh)
+        run: |
+          bash ./misc/scripts/gitignore_check.sh
+
+      - name: Get changed files
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          if [ "${{ github.event_name }}" == "pull_request" ]; then
+            files=$(git diff-tree --no-commit-id --name-only -r HEAD^1..HEAD 2> /dev/null || true)
+          elif [ "${{ github.event_name }}" == "push" -a "${{ github.event.forced }}" == "false" -a "${{ github.event.created }}" == "false" ]; then
+            files=$(git diff-tree --no-commit-id --name-only -r ${{ github.event.before }}..${{ github.event.after }} 2> /dev/null || true)
+          fi
+          files=$(echo "$files" | xargs -I {} sh -c 'echo "\"./{}\""' | tr '\n' ' ')
+          echo "CHANGED_FILES=$files" >> $GITHUB_ENV
+
+      - name: Style checks via pre-commit
+        uses: pre-commit/action@v3.0.1
+        with:
+          extra_args: --files ${{ env.CHANGED_FILES }}
+
+      - name: Class reference schema checks
+        run: |
+          sudo apt-get update
+          sudo apt-get install libxml2-utils
+          xmllint --quiet --noout --schema doc/class.xsd doc/classes/*.xml modules/*/doc_classes/*.xml platform/*/doc_classes/*.xml
+
+      - name: Run C compiler on `gdextension_interface.h`
+        run: |
+          gcc -c core/extension/gdextension_interface.h