- Chat and word-check are now routed screens (/game/:id/chat, /game/:id/check) with a
header back to the game and no tab-bar, replacing their modals. The soft keyboard just
resizes the visible viewport (tracked into --vvh, which the Screen height uses since iOS
does not shrink dvh for the keyboard) with the input pinned to the bottom: no modal
relayout, no page jump. Supersedes the earlier bottom-sheet Modal attempt.
- A new chat message raises an unread badge on the in-game hamburger + the Chat menu row
(per game, cleared on opening the chat), mirroring the lobby badge.
- TG native back + the header back chevron return chat/check to their game.
- Exposes --tg-safe-top (device notch) for the finalised TG-fullscreen header.
Tests: e2e for chat/check opening as their own screens + back. Docs: PLAN, FUNCTIONAL(+ru).
Ilia Denisov