diff --git a/.github/workflows/cua-smoke.yml b/.github/workflows/cua-smoke.yml
index b06ccda..a1b4cb9 100644
--- a/.github/workflows/cua-smoke.yml
+++ b/.github/workflows/cua-smoke.yml
@@ -260,6 +260,22 @@ jobs:
           echo "MODEL_CAPABLE=$CAPABLE" >> "$GITHUB_OUTPUT"
           echo "opencode model-capable in CI: $CAPABLE"
 
+      - name: Write CUA runner script
+        run: |
+          cat > /tmp/cua-runner.sh << 'RUNNEREOF'
+          #!/bin/sh
+          # Generated by CI workflow — dispatches to the right CUA mode.
+          set -e
+          if [ "${CUA_SCENARIO}" = "e2e" ]; then
+            exec python3 scripts/android-cua-smoke.py --e2e --model gpt-5.4 --include-xml --opencode-url "${OPENCODE_URL}"
+          elif [ -n "${CUA_QUERY}" ]; then
+            exec python3 scripts/android-cua-smoke.py --query "${CUA_QUERY}" --model gpt-5.4 --include-xml --opencode-url "${OPENCODE_URL}" --eval-output /tmp/cua_eval_report.json
+          else
+            exec python3 scripts/android-cua-smoke.py --showcase --model gpt-5.4 --include-xml --opencode-url "${OPENCODE_URL}"
+          fi
+          RUNNEREOF
+          chmod +x /tmp/cua-runner.sh
+
       - name: Run CUA smoke test with emulator
         uses: reactivecircus/android-emulator-runner@v2
         env:
@@ -277,22 +293,15 @@ jobs:
           disable-animations: true
           emulator-boot-timeout: 600
           emulator-options: -no-window -no-audio -no-boot-anim -gpu swiftshader_indirect -no-snapshot
-          # NOTE: android-emulator-runner runs this script with /usr/bin/sh (dash).
-          # NOTE: Keep the script flat — the action wraps it in sh -c.
-          # if/elif/fi broke previously due to default-value quoting in GH
-          # expressions. The env vars are now clean; shell branching works.
+          # NOTE: android-emulator-runner action wraps script content in
+          # sh -c "..." which breaks when inner " chars appear. Use a
+          # temp shell script to avoid quoting conflicts entirely.
           script: |
             adb shell pm clear cc.agentlabs.opencode || true
             adb install android/app/build/outputs/apk/release/app-release.apk
             adb shell am start -n cc.agentlabs.opencode/.MainActivity
             sleep 5
-            if [ "${CUA_SCENARIO}" = "e2e" ]; then
-              python3 scripts/android-cua-smoke.py --e2e --model gpt-5.4 --include-xml --opencode-url "${OPENCODE_URL}"
-            elif [ -n "${CUA_QUERY}" ]; then
-              python3 scripts/android-cua-smoke.py --query "${CUA_QUERY}" --model gpt-5.4 --include-xml --opencode-url "${OPENCODE_URL}" --eval-output /tmp/cua_eval_report.json
-            else
-              python3 scripts/android-cua-smoke.py --showcase --model gpt-5.4 --include-xml --opencode-url "${OPENCODE_URL}"
-            fi
+            sh /tmp/cua-runner.sh
 
       - name: opencode server log
         if: always()