- Rename script from apns-dev to push-dev (handles both APNs and FCM)
- Fetch credentials from Deploy/Fizzy Production (same as Kamal)
- Use _B64 env vars to avoid escaping issues with multiline keys
- Update bin/dev flag from --apns to --push
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>