feat: Add format check step to CI workflows for .NET project

.github/workflows/ci-release.yml

@@ -18,6 +18,20 @@ jobs:
       - name: Run markdownlint
         run: bash scripts/lint-markdown.sh
 
+  format-check:
+    name: Format Check
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup .NET 10
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: '10.0.x'
+
+      - name: Check formatting
+        run: dotnet format src/EchoHub.slnx --verify-no-changes --verbosity diagnostic
+
   detect-changes:
     name: Detect Changes
     runs-on: ubuntu-latest
@@ -44,7 +58,7 @@ jobs:
 
   test:
     name: Build & Test
-    needs: [lint-markdown, detect-changes]
+    needs: [lint-markdown, format-check, detect-changes]
     if: needs.detect-changes.outputs.src_changed == 'true'
     runs-on: ubuntu-latest
     steps:
@@ -73,7 +87,7 @@ jobs:
 
   release:
     name: Create Release
-    needs: [lint-markdown, detect-changes, test]
+    needs: [lint-markdown, format-check, detect-changes, test]
     if: needs.detect-changes.outputs.src_changed == 'true'
     runs-on: ubuntu-latest
     steps:

.github/workflows/pr-check.yml

@@ -14,9 +14,23 @@ jobs:
       - name: Run markdownlint
         run: bash scripts/lint-markdown.sh
 
+  format-check:
+    name: Format Check
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup .NET 10
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: '10.0.x'
+
+      - name: Check formatting
+        run: dotnet format src/EchoHub.slnx --verify-no-changes --verbosity diagnostic
+
   test:
     name: Build & Test
-    needs: lint-markdown
+    needs: [lint-markdown, format-check]
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4