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maziggy
b90dee02ab
New view toggle on the Printers page renders a responsive grid of live camera tiles instead of printer cards. Reuses the existing /camera/stream fan-out so the backend ffmpeg pipeline is unchanged. To stay sustainable on the median Pi 4 install, only on-screen tiles run live, and only up to a per-user cap (default 4). Other visible tiles fall back to periodic /camera/snapshot polling (default 8s). Off-screen tiles pause entirely. Tiles POST /camera/stop on unmount and on leave-live so the backend transcoder slot is released the same way EmbeddedCameraViewer does it. CameraTile is a 3-mode leaf (live / snapshot / paused) with a single <img> and an onError no-signal fallback. CameraWall is the scheduler: IntersectionObserver tracks visibility, a stable walker over the sorted printer list assigns live slots first-N-visible to avoid LRU churn. Same ['printerStatus', id] React Query cache the cards already populate, so flipping between Cards and Cam Wall is instant. Tile click honours the existing Settings camera_view_mode preference (window vs embedded). Both wall settings are per-user localStorage (camWallMaxLive, camWallSnapshotSec) — a Pi 4 user and a NUC user want different caps.
