style(audience): hardcode step scope labels, drop scope-derivation logic

Reverts the setup-job scope derivation and the per-cell env-var
single-source pattern. Step names and if: conditions now state the
scope directly:

  Detect or Install Unity (Windows + macOS only)
  Detect or Install VS Build Tools (StandaloneWindows64 IL2CPP only)

Trade-off: adding a desktop target that needs Unity install or VS
Build Tools requires editing the step's name and if: in the workflow
alongside matrix-shared.json. Worth the simpler workflow.

Author: ImmutableJeffrey

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

@@ -41,8 +41,6 @@ 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 }}
-      install_vs_tools_scope: ${{ steps.set.outputs.install_vs_tools_scope }}
     steps:
       - uses: actions/checkout@v4
       - id: set
@@ -58,21 +56,6 @@ jobs:
           else
             echo 'pr_exclude=[]' >> "$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" >> "$GITHUB_OUTPUT"
-          # Scope label for the "Detect or Install VS Build Tools" step: cartesian
-          # of Windows desktop targets and the IL2CPP backend (the structural Unity
-          # rule). Joined with " or " so multi-target setups still produce a single
-          # readable label.
-          install_vs_tools_scope=$(jq -r '
-            [.desktop_targets[] | select(.target | contains("Windows")) | .target] as $win
-            | (.scripting_backends | map(select(. == "IL2CPP"))) as $il
-            | [$win[] as $t | $il[] as $b | "\($t) \($b)"]
-            | join(" or ")
-          ' "$f")
-          echo "install_vs_tools_scope=$install_vs_tools_scope" >> "$GITHUB_OUTPUT"
 
   playmode:
     needs: setup
@@ -88,11 +71,6 @@ jobs:
     timeout-minutes: 45
     env:
       AUDIENCE_TEST_CELL_ID: ${{ matrix.platform.target }}-${{ matrix.backend }}-${{ matrix.unity.version }}
-      # 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.
-      # Both labels are derived from matrix data in the setup job.
-      INSTALL_UNITY_SCOPE: ${{ needs.setup.outputs.install_unity_scope }}
-      INSTALL_VS_TOOLS_SCOPE: ${{ needs.setup.outputs.install_vs_tools_scope }}
 
     steps:
       - uses: actions/checkout@v4
@@ -108,16 +86,16 @@ 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 }} only)
+      - name: Detect or Install Unity (Windows + macOS 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 }} only)
-        if: contains(env.INSTALL_VS_TOOLS_SCOPE, format('{0} {1}', matrix.platform.target, matrix.backend))
+      - name: Detect or Install VS Build Tools (StandaloneWindows64 IL2CPP only)
+        if: matrix.platform.target == 'StandaloneWindows64' && matrix.backend == 'IL2CPP'
         shell: pwsh
         run: .github/scripts/audience/ensure-msvc-windows.ps1