style(audience): always show step scope in name, derive Unity scope from matrix

Detect or Install Unity now always shows "(Windows + macOS only)" in
the step name, derived in the setup job from desktop_targets that
carry an install_unity_script. Adding or removing such a target
updates the label automatically.

Detect or Install VS Build Tools always shows
"(StandaloneWindows64 IL2CPP only)". This scope is structurally fixed
so the label lives as a static job env value.

In both cases the if: condition derives from the same source as the
label (matrix data or the env), so name and condition cannot drift.

Author: ImmutableJeffrey

.github/workflows/test-audience-sample-app.yml

@@ -41,6 +41,7 @@ jobs:
       desktop_targets: ${{ steps.set.outputs.desktop_targets }}
       mobile_targets: ${{ steps.set.outputs.mobile_targets }}
       pr_exclude: ${{ steps.set.outputs.pr_exclude }}
+      install_unity_scope: ${{ steps.set.outputs.install_unity_scope }}
     steps:
       - uses: actions/checkout@v4
       - id: set
@@ -56,6 +57,10 @@ jobs:
           else
             echo 'pr_exclude=[]' >> "$GITHUB_OUTPUT"
           fi
+          # Friendly scope label for the "Detect or Install Unity" step: all desktop
+          # targets that carry an install_unity_script, with target names cleaned up.
+          install_unity_scope=$(jq -r '[.desktop_targets[] | select(.install_unity_script != "") | .target | sub("^Standalone"; "") | sub("64$"; "") | sub("OSX"; "macOS")] | join(" + ")' "$f")
+          echo "install_unity_scope=$install_unity_scope" >> "$GITHUB_OUTPUT"
 
   playmode:
     needs: setup
@@ -71,9 +76,12 @@ jobs:
     timeout-minutes: 45
     env:
       AUDIENCE_TEST_CELL_ID: ${{ matrix.platform.target }}-${{ matrix.backend }}-${{ matrix.unity.version }}
-      # Single-source scope strings: empty when the step does not run, target-or-target+backend label when it does.
-      INSTALL_UNITY_SCOPE: ${{ matrix.platform.install_unity_script != '' && matrix.platform.target || '' }}
-      INSTALL_VS_TOOLS_SCOPE: ${{ matrix.platform.target == 'StandaloneWindows64' && matrix.backend == 'IL2CPP' && format('{0} {1}', matrix.platform.target, matrix.backend) || '' }}
+      # Always-populated scope labels. Step names show them as "(<scope> only)" on
+      # every cell, so a reader can see what the step is for without expanding it.
+      # Unity scope is derived from matrix data in the setup job.
+      # VS Build Tools scope is structurally fixed (Windows IL2CPP needs MSVC).
+      INSTALL_UNITY_SCOPE: ${{ needs.setup.outputs.install_unity_scope }}
+      INSTALL_VS_TOOLS_SCOPE: StandaloneWindows64 IL2CPP
 
     steps:
       - uses: actions/checkout@v4
@@ -89,16 +97,16 @@ jobs:
             Library-${{ matrix.backend }}-${{ matrix.platform.target }}-${{ matrix.unity.version }}-
             Library-${{ matrix.backend }}-${{ matrix.platform.target }}-
 
-      - name: Detect or Install Unity${{ env.INSTALL_UNITY_SCOPE && format(' ({0} only)', env.INSTALL_UNITY_SCOPE) || '' }}
-        if: env.INSTALL_UNITY_SCOPE
+      - name: Detect or Install Unity (${{ env.INSTALL_UNITY_SCOPE }} only)
+        if: matrix.platform.install_unity_script != ''
         env:
           UNITY_VERSION: ${{ matrix.unity.version }}
           UNITY_CHANGESET: ${{ matrix.unity.changeset }}
           BACKEND: ${{ matrix.backend }}
         run: ${{ matrix.platform.install_unity_script }}
 
-      - name: Detect or Install VS Build Tools${{ env.INSTALL_VS_TOOLS_SCOPE && format(' ({0} only)', env.INSTALL_VS_TOOLS_SCOPE) || '' }}
-        if: env.INSTALL_VS_TOOLS_SCOPE
+      - name: Detect or Install VS Build Tools (${{ env.INSTALL_VS_TOOLS_SCOPE }} only)
+        if: format('{0} {1}', matrix.platform.target, matrix.backend) == env.INSTALL_VS_TOOLS_SCOPE
         shell: pwsh
         run: .github/scripts/audience/ensure-msvc-windows.ps1