{
 "release": "S02",
 "kind": "electrical-and-setup-plan",
 "date": "2026-09-12",
 "root": "/building-models/s02",
 "status": "planning estimate; not a certified electrical design; positions indicative",
 "sources": {
  "groundFloorCad": {
   "release": "R03",
   "file": "/building-models/r03/ground-floor.FCStd",
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  },
  "firstFloorCad": {
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   "file": "first-floor.FCStd (building-models-r04 GitHub release)",
   "sha256": "ad1397f6b855e309b0093e64baf582db559be5b4ebab1e22ef3f428a3b77d5e9"
  },
  "decisions": "12 September 2026: three-phase 10 kW; 7 cabins on 0.8-ton inverter splits and the hall on 2 x 1.5-ton; lab equipment in FF-02 once enclosed; 3 kVA online UPS with about 2 h battery; one inverter per floor; hall AV; 10 PoE cameras; at least three access doors per floor"
 },
 "method": "Room boundaries and furniture extracted from copies of the source CAD; symbols placed by rule from that geometry (symbols.json); plans rendered from the placement coordinates; native FreeCAD documents rebuilt from the same list with reference shapes copied from the source CAD and freshly reopened (fresh-reopen.json). AI-generated imagery: none.",
 "supersedes": "S01 room service scenario of 10 September 2026 (historical, retained in buildingRoomServices.json)",
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