live: add a control footer under the grid (paging + play/stop + fullscreen)
The live-view <main> now hosts its own 32px footer bar beneath the grid: prev page on the left, play/stop in the centre, next page + fullscreen on the right — all icon buttons. Pagination is new: cameras are split into pages of dim² cells, prev/next walk the pages (page 0 still honours a saved manual layout), and the arrows disable at the bounds. Fullscreen now targets <main> so the control bar stays visible in fullscreen (the global stats footer is outside <main> and hides as before). The sidebar play/fullscreen items now target <main> too. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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