Browser on demand only

.github/workflows/firefox.yml

@@ -1,6 +1,12 @@
 name: Firefox
 on:
   workflow_dispatch:
+    inputs:
+      build_browser:
+        description: 'Build the entire browser'
+        type: boolean
+        required: false
+        default: false
   pull_request:
     branches: ["main"]
     types: [opened, synchronize, reopened, ready_for_review]
@@ -26,7 +32,7 @@ jobs:
         flavor: [glue]
         include:
           - type: ${{ github.event.pull_request.draft == false && 'release' || 'debug' }}
-          - flavor: ${{github.event.pull_request.draft == false && 'browser' || 'glue'}}
+          - flavor: ${{github.event.inputs.build_browser == true && 'browser' || 'glue' }}
     runs-on: ${{ matrix.os }}
     defaults:
       run:
@@ -40,7 +46,7 @@ jobs:
         uses: actions/checkout@d632683dd7b4114ad314bca15554477dd762a938 # v4.2.0
 
       - name: Maximize build space
-        if: runner.os == 'Linux'
+        if: runner.os == 'Linux' && matrix.flavor == 'browser'
         run: |
           sudo rm -rf /usr/local/lib/android || true
           sudo rm -rf /usr/share/dotnet || true