Consolidate Windows and Linux builds into unified workflow

.github/settings.yml

@@ -61,7 +61,7 @@ branches:
       required_pull_request_reviews: null
       required_status_checks:
         strict: false
-        contexts: ['Build & Test', 'Build & Test (Windows)']
+        contexts: ['Build & Test (ubuntu-latest)', 'Build & Test (windows-latest)']
       enforce_admins: false
       required_linear_history: false
       restrictions: null

.github/workflows/build.yml

@@ -10,7 +10,10 @@ on:
 jobs:
   build:
     name: Build & Test
-    runs-on: ubuntu-24.04
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest]
 
     steps:
       - name: Checkout
@@ -27,10 +30,16 @@ jobs:
       - name: Build
         run: dotnet build -c Release
 
+      - name: Run tests without Coverage
+        if: startsWith(matrix.os, 'windows')
+        run: dotnet test --no-build -c Release -p:CollectCoverage=false
+
       - name: Run tests with Coverage
+        if: startsWith(matrix.os, 'ubuntu')
         run: dotnet test --no-build -c Release -p:CollectCoverage=true -e:CoverletOutputFormat=opencover
 
       - name: Publish to Codecov
+        if: startsWith(matrix.os, 'ubuntu')
         uses: codecov/codecov-action@v5
         with:
           fail_ci_if_error: true

.github/workflows/ci.yml

@@ -16,7 +16,7 @@ jobs:
   pack:
     name: Create NuGet packages
     needs: [build]
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-latest
     steps:
       - name: Checkout
         uses: actions/checkout@v6
@@ -47,7 +47,7 @@ jobs:
   github:
     name: Deploy to GitHub
     needs: [pack]
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-latest
     steps:
       - name: Download artifacts
         uses: actions/download-artifact@v6
@@ -64,7 +64,7 @@ jobs:
     name: Create GitHub release
     needs: [pack]
     if: startsWith(github.ref, 'refs/tags/v')
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-latest
     steps:
       - name: Checkout
         uses: actions/checkout@v6
@@ -82,7 +82,7 @@ jobs:
     name: Deploy to NuGet
     needs: [release]
     if: startsWith(github.ref, 'refs/tags/v')
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-latest
     steps:
       - name: Download artifacts
         uses: actions/download-artifact@v6

.github/workflows/labeled.yml

@@ -13,7 +13,7 @@ permissions:
 jobs:
   automerge:
     name: Enable auto-merge
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-latest
     if: github.actor == 'phnx47-bot' && contains(github.event.pull_request.labels.*.name, 'sync')
     steps:
       - name: Checkout