Add debug workflow to investigate formatting differences

.github/workflows/format-debug.yml

@@ -0,0 +1,90 @@
+name: Debug Formatting Issues
+
+on:
+  workflow_dispatch:
+
+jobs:
+  debug:
+    runs-on: ubuntu-24.04
+    steps:
+
+    - uses: actions/checkout@v3
+
+    - name: Setup clang-format
+      run: ./formatters/setup-clang-format-docker.sh
+
+    - name: Install dotnet
+      uses: actions/setup-dotnet@v3
+      with:
+          dotnet-version: "8.0.x"
+
+    - name: Install Node and dependencies
+      uses: actions/setup-node@v3
+      with:
+        node-version: "24"
+
+    - name: Install JDK
+      uses: actions/setup-java@v3
+      with:
+        distribution: 'zulu'
+        java-version: "16"
+
+    - name: Install Haxe
+      uses: krdlab/setup-haxe@v1
+      with:
+        haxe-version: '4.3.2'
+    - run: haxelib install formatter
+
+    - name: Install Dart
+      uses: dart-lang/setup-dart@v1
+      with:
+        sdk: '3.8.1'
+
+    - name: Show environment info
+      run: |
+        echo "=== Dart Version ==="
+        dart --version
+        echo "=== Dart Format Version ==="
+        dart format --version
+        echo "=== Git Status Before ==="
+        git status --porcelain
+        echo "=== OS Info ==="
+        uname -a
+        lsb_release -a
+
+    - name: Show specific Flutter files before formatting
+      run: |
+        echo "=== Sample Flutter files before formatting ==="
+        head -10 spine-flutter/lib/extensions.dart || echo "File not found"
+        head -10 spine-flutter/lib/spine_dart.dart || echo "File not found"
+
+    - name: Run Dart formatter only
+      run: |
+        echo "=== Running Dart formatter ==="
+        ./formatters/format-dart.sh
+        echo "=== Git status after Dart formatting ==="
+        git status --porcelain
+        echo "=== Modified files ==="
+        git ls-files -m
+
+    - name: Show diff for first few files
+      run: |
+        echo "=== Showing diffs for first 3 modified files ==="
+        for file in $(git ls-files -m | head -3); do
+          echo "--- Diff for $file ---"
+          git diff "$file" | head -50
+          echo ""
+        done
+
+    - name: Archive all diffs
+      run: |
+        git diff > all-format-diffs.txt
+        git status --porcelain > git-status.txt
+
+    - name: Upload debug artifacts
+      uses: actions/upload-artifact@v4
+      with:
+        name: format-debug-artifacts
+        path: |
+          all-format-diffs.txt
+          git-status.txt