Re-instate Linux and Windows builds

.github/workflows/build.yaml

@@ -7,7 +7,6 @@ permissions:
 
 jobs:
   linux:
-    if: false
     runs-on: ubuntu-24.04
     strategy:
       fail-fast: false
@@ -268,7 +267,7 @@ jobs:
           "$RUNNER_TEMP/release/src/cli/dokit.app/Contents/MacOS/dokit" --version
           [[ '${{ matrix.os }}' == 'macos-13' && '${{ matrix.cc }}' == 'clang' ]] ||
             "$RUNNER_TEMP/coverage/src/cli/dokit.app/Contents/MacOS/dokit" --version
-      - name: Grant Bluetooth permission
+      - name: Grant Bluetooth access # Only needed for unit tests with older Qt's on newer runners.
         if: matrix.os != 'macos-13' && ( startsWith(matrix.qt, '5') || startsWith(matrix.qt, '6.2.') )
         run: >
           sudo sqlite3 "$HOME/Library/Application Support/com.apple.TCC/TCC.db" "INSERT or REPLACE INTO access
@@ -323,7 +322,6 @@ jobs:
           if-no-files-found: error
 
   win:
-    if: false
     runs-on: windows-latest
     defaults: { run: { shell: cmd } }
     strategy: