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Phase 0 of the room GATE VIEW + seat-renewal sprint. Mirrors the my-sea treatment: on any room page the self-referential CONT GAME is replaced by a GATE VIEW button that opens the room's renewal gate-view. - `room_view` page_class → "page-gameboard page-room"; the bare gameboard listing stays "page-gameboard" (no page-room) so CONT GAME persists there for returning to a recent room. - `_navbar.html` GATE VIEW branch fires on `page-my-sea` OR `page-room`; onclick routes, in precedence: page-room → epic:room_gate (room in context); my-sea-visit → visitor gate; else owner's sea gate. One consolidated branch (DRY) instead of two near-identical button blocks. Tests: RoomNavbarGateViewTest (4) — room page shows GATE VIEW not CONT GAME, links to room_gate, gate-view page also shows it, page-room marker present. 826 epic+gameboard ITs green. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>