Fix kiosk LAN discovery and improve OTA update detection.

Discovery no longer aborts after 3s idle, probes priority hosts (.128, gateway) first, accepts ping API and normalizes HTTPS URLs. OTA compares versionCode from release notes; bump kiosk to 1.7.18.

Co-authored-by: Cursor <cursoragent@cursor.com>

.github/workflows/build-kiosk.yml

@@ -37,8 +37,10 @@ jobs:
         id: version
         run: |
           VERSION=$(grep 'versionName' evershelf-kiosk/app/build.gradle.kts | grep -oP '"\K[^"]+')
+          VCODE=$(grep 'versionCode' evershelf-kiosk/app/build.gradle.kts | grep -oP '\d+')
           echo "name=$VERSION" >> "$GITHUB_OUTPUT"
-          echo "Kiosk version: $VERSION"
+          echo "code=$VCODE" >> "$GITHUB_OUTPUT"
+          echo "Kiosk version: $VERSION (versionCode $VCODE)"
 
       - name: Build debug APK
         run: gradle assembleDebug --no-daemon
@@ -75,7 +77,7 @@ jobs:
           sleep 3
           gh release create kiosk-latest \
             --title "EverShelf Kiosk Latest" \
-            --notes "Alias automatico → kiosk-${{ steps.version.outputs.name }}" \
+            --notes "Alias automatico → kiosk-${{ steps.version.outputs.name }} (versionCode ${{ steps.version.outputs.code }})" \
             --prerelease \
             artifacts/evershelf-kiosk.apk