Release 1.0.6 internal test

[r0073rr0r]

Summary

• Complete Sprint 12 IRC UX parity: clickable links/channels/nicks, rich link previews, nick actions, user lists, blacklist enforcement, WHOIS panel, and kick/ban/quiet modal.
• Update CTCP VERSION reply to AndroidIRCX Flutter v1.0.6+9.
• Bump Play version to 1.0.6+9 and refresh app icons.

Validation

• lutter analyze
• lutter test (460 tests)
• lutter build appbundle --release
• Release manifest checked: �ersionName=1.0.6, �ersionCode=9
• Release manifest checked: CAMERA permission is not present

Merge note

Do not merge until device/internal Play testing is finished.