fix(ci): Update GitHub Actions workflows for Windows 11 and fix shell compatibility

- Update build.yml to use windows-2022 instead of windows-latest
- Update security.yml to use windows-2022 and fix MSRV check shell compatibility
- Add PowerShell-specific MSRV check for Windows in security.yml
- Install bc and jq dependencies in coverage.yml for Ubuntu
- Fix coverage threshold check script with proper dependencies

Co-Authored-By: Claude (glm-4.7) <noreply@anthropic.com>

Author: alphaqiu

.github/workflows/build.yml

@@ -193,7 +193,7 @@ jobs:
   # Build for Windows
   build-windows:
     name: Build Windows (x86_64)
-    runs-on: windows-latest
+    runs-on: windows-2022
 
     defaults:
       run:
@@ -240,7 +240,7 @@ jobs:
   # Build for Windows ARM64
   build-windows-arm64:
     name: Build Windows (ARM64)
-    runs-on: windows-latest
+    runs-on: windows-2022
 
     defaults:
       run:

.github/workflows/coverage.yml

@@ -13,6 +13,11 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v4
 
+      - name: Install dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y bc jq
+
       - name: Install Rust toolchain
         uses: dtolnay/rust-toolchain@stable
 

.github/workflows/security.yml

@@ -12,13 +12,13 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-latest, macos-latest, windows-latest]
+        os: [ubuntu-latest, macos-latest, windows-2022]
         include:
           - os: ubuntu-latest
             target: x86_64-unknown-linux-gnu
           - os: macos-latest
             target: x86_64-apple-darwin
-          - os: windows-latest
+          - os: windows-2022
             target: x86_64-pc-windows-msvc
 
     steps:
@@ -80,6 +80,7 @@ jobs:
           cargo audit || echo "⚠️  Security audit found potential issues"
 
       - name: Check MSRV in Cargo.toml
+        if: runner.os != 'Windows'
         run: |
           if grep -q "rust-version" Cargo.toml; then
             echo "✅ MSRV declared in Cargo.toml"
@@ -89,6 +90,20 @@ jobs:
             exit 1
           fi
 
+      - name: Check MSRV in Cargo.toml (Windows)
+        if: runner.os == 'Windows'
+        shell: pwsh
+        run: |
+          Write-Host "Checking MSRV in Cargo.toml..."
+          $content = Get-Content Cargo.toml -Raw
+          if ($content -match "rust-version") {
+            Write-Host "✅ MSRV declared in Cargo.toml"
+            Write-Host $content | Select-String "rust-version"
+          } else {
+            Write-Host "❌ ERROR: MSRV not declared in Cargo.toml"
+            exit 1
+          }
+
       - name: Security summary
         run: |
           echo "## Security Verification" >> $GITHUB_STEP_SUMMARY