Release v1.6.3

## Bug Fix

### Default settings were wrong on fresh install
- Remote DNS defaulted to DoH (https://dns.google/dns-query) instead of plain DNS servers — caused VPN failure on networks without DoH support
- Direct DNS defaulted to Chinese DoH (https://223.5.5.5/dns-query) instead of standard DNS servers
- FakeDNS defaulted to enabled (true) instead of disabled — incompatible with ALFIS domains

XML preference defaults now match DataStore defaults:
- Remote DNS: 1.1.1.1, 8.8.8.8, 9.9.9.9 + ALFIS servers
- Direct DNS: 8.8.8.8, 1.1.1.1, 9.9.9.9, 77.88.8.88
- FakeDNS: disabled

Note: existing users with wrong settings need to manually fix DNS in Settings or clear app data.