Standardize CI workflows

- Update swift-format to Swift 6.2
- Standardize swiftlint to simple variant
- Remove Windows CI jobs (too flaky)
- Add README validation where missing
- Add missing workflow files

All swift-* packages now have consistent CI configuration:
- Test on minimum Swift version (macOS)
- Test on Swift 6.2 (macOS & Ubuntu)
- README validation tests
- No Windows support

Author: coenttb

.github/workflows/ci.yml

@@ -76,24 +76,6 @@ jobs:
       - name: Run tests
         run: swift test
 
-  # Windows support disabled - filenames contain < and > characters
-  # Windows filesystems do not support < > characters in filenames
-  # (e.g., "Sources/HTMLElementsPointFreeHTML/<a> Anchor.swift")
-  # This causes checkout to fail with: error: invalid path
-  #
-  # windows:
-  #   name: Windows (Swift 6.2)
-  #   runs-on: windows-latest
-  #   steps:
-  #     - uses: actions/checkout@v5
-  #     - uses: SwiftyLab/setup-swift@latest
-  #       with:
-  #         swift-version: "6.2"
-  #     - name: Build
-  #       run: swift build
-  #     - name: Run tests
-  #       run: swift test
-
   readme-validation:
     name: README Code Examples
     runs-on: macos-26

.github/workflows/swift-format.yml

@@ -13,7 +13,7 @@ jobs:
   swift_format:
     name: swift-format
     runs-on: ubuntu-latest
-    container: swift:6.0
+    container: swift:6.2
     permissions:
       contents: write
     steps: