android: the same SIGPIPE race, in the two focus checks it has not lost yet

deploy.sh and dev.sh both ask which app is on screen with
`echo "$FOCUS" | grep -qi`, under the same `set -o pipefail`. $FOCUS is one
line, so echo has always finished writing before grep -q exits and the race
has never been lost — but it is the identical shape that made verify-icon.sh
report a missing file in an APK that contained it. Herestrings, so there is no
writer to kill.

src-tauri/android/dev.sh

@@ -55,7 +55,8 @@ echo "== install $(date +%T)"
 "$ADB" reverse tcp:1421 tcp:1421
 "$ADB" shell am force-stop com.soulstream.app
 FOCUS=$("$ADB" shell dumpsys window 2>/dev/null | grep -a "mCurrentFocus" | head -1)
-if echo "$FOCUS" | grep -qi "soulstream\|launcher"; then
+# herestring, for the reason spelled out in deploy.sh beside the same test
+if grep -qi "soulstream\|launcher" <<< "$FOCUS"; then
     "$ADB" shell am start -n com.soulstream.app/.MainActivity >/dev/null
     echo "== launched $(date +%T) — serve the frontend on 1421 (npm run dev) if it is not up"
 else