Floorplan Live-View (PL-T193)

FloorplanView is an SVG canvas that can use a vector svg_template or a background image (architect's drawing, photo of the bar) with resources overlaid as positioned shapes. Each resource carries x/y/width/height/rotation in its document, optionally per-view (a single resource can appear at different coordinates in main-floor view and summer-terrace view). The view computes status (available, reserved, confirmed, in_use, maintenance, retired) using a 30-minute lookahead so a lane that's about to be in use is already marked.

Real-time updates ride on chain.floorplan.{tenant}.{location} SSE with a debounced refetch — every connected display refreshes within a few hundred ms when a booking transitions. The counter-screen display mode at /floorplan/display uses a dark theme, oversized typography, and oversized counters for legibility from across the room; it also adds a 5 s polling fallback so the screen recovers gracefully if SSE drops. Walk-ins use HTML5 drag-drop: the operator drags a walk-in card onto a free lane, which POSTs to /chain/floorplan/{location}/assign-walk-in with 409-handling for races.

The floorplan editor at /chain/floorplan/editor is admin-only — operators drag resources from a tray onto the canvas, an inspector lets them tune x/y/w/h/rotation, and they can switch between named views (main, terrace, vip-room) so each layout has its own coordinate set. The walk-in queue itself supports enqueue/cancel/list/assign with a TTL that expires unredeemed entries.