{
 "format": "construct-scene",
 "version": 2,
 "id": "stortorget-single-gas-post-lamp",
 "title": "Gas-style post lamp",
 "subject": {
  "category": "object",
  "summary": "Photo-inferred Stockholm Stortorget single post gas-style lantern: fluted cast-iron shaft, open scroll cradle, tapered clear glass, broad bell cap and small vent finial. Lower post obscured in reference; no ground geometry.",
  "accuracy": "approximate",
  "synthetic": false
 },
 "units": "m",
 "seed": 7,
 "sources": [
  {
   "id": "request",
   "kind": "user_request",
   "title": "Single gas-style lamp reconstruction request",
   "rights": "user_private"
  },
  {
   "id": "photo",
   "kind": "reference_image",
   "title": "Ximonic (Simo Räsänen), Stortorget Christmas Market, December 2022; CC BY-SA 4.0. Derived visual reconstruction.",
   "ref": "https://creativecommons.org/licenses/by-sa/4.0/",
   "rights": "reference_only"
  },
  {
   "id": "model-estimate",
   "kind": "generated",
   "ref": "Provenance audit D; existing geometry retained, no measured or orthographic fit.",
   "rights": "reference_only",
   "title": "Agent-authored production estimates and unseen continuations, not human measurements"
  },
  {
   "id": "lighting-context",
   "kind": "document",
   "ref": "https://sv.wikipedia.org/wiki/Gatubelysning_i_Stockholm",
   "rights": "reference_only",
   "title": "Gatubelysning i Stockholm; context only, not identification of this lamp"
  }
 ],
 "facts": [
  {
   "key": "height",
   "value": 5.1,
   "unit": "m",
   "certainty": "inferred",
   "source": "model-estimate",
   "note": "Agent/supervisor production envelope estimate only, not user-measured or published. Full lower post is occluded in reference; actual model compiled envelope is 5.1283 m, not a measured lamp height."
  },
  {
   "key": "head-diameter",
   "value": 0.91,
   "unit": "m",
   "certainty": "inferred",
   "source": "model-estimate",
   "note": "Agent photo-proportioned production estimate, not a human measurement or published dimension. Perspective reference does not verify 0.91 m."
  },
  {
   "key": "single-head",
   "value": 1,
   "certainty": "inferred",
   "source": "photo",
   "note": "Visible in reference: one centrally mounted lantern head at upper right. Agent visual observation, not a user-supplied claim, published count, fuel identification or measurement; lower post is occluded by stall."
  },
  {
   "certainty": "inferred",
   "key": "visible-outer-form",
   "note": "Literal perspective-photo observation only. Rotational profiles, all dimensions, precise detail counts and hidden continuation are inferred; no orthographic fitting.",
   "source": "photo",
   "value": "One tapered transparent-looking enclosure below a broad rounded cap, upper dome/loop, open curved cradle and short visible ridged shaft; lower shaft/foot hidden by stall."
  },
  {
   "certainty": "inferred",
   "key": "identity-limits",
   "note": "Legacy gas/castiron/mantle/porcelain/vent part IDs and labels are modeling terminology, not documented identities or physical functions. Citywide lighting history discusses electrified historic-looking fittings; it does not identify this actual lamp.",
   "source": "model-estimate",
   "value": "Actual fixture type, fuel, manufacturer, date and metal/glass composition remain unverified."
  }
 ],
 "parts": [
  {
   "id": "castiron-stepped-foot",
   "label": "Castiron Stepped Foot",
   "role": "mass",
   "certainty": "inferred",
   "basis": [
    "height",
    "head-diameter",
    "identity-limits"
   ],
   "stage": 0,
   "shape": {
    "type": "lathe",
    "profile": [
     [
      0,
      0
     ],
     [
      0.215,
      0
     ],
     [
      0.215,
      0.055
     ],
     [
      0.19,
      0.075
     ],
     [
      0.19,
      0.13
     ],
     [
      0.16,
      0.17
     ],
     [
      0.145,
      0.24
     ],
     [
      0.13,
      0.34
     ]
    ],
    "segments": 24,
    "meridians": 8
   },
   "at": [
    0,
    0,
    0
   ],
   "look": {
    "fill": "dark",
    "weight": 0.65,
    "alpha": 0.85
   },
   "source": "model-estimate",
   "note": "Hidden below stall in source photo. Entire foot/pedestal shape, construction, material and proportions are agent-inferred completion; photo is not direct evidence. Both size and shape remain inferred."
  },
  {
   "id": "pedestal-moulded-shoe",
   "label": "Pedestal Moulded Shoe",
   "role": "identity",
   "certainty": "inferred",
   "basis": [
    "height",
    "head-diameter",
    "identity-limits"
   ],
   "stage": 1,
   "shape": {
    "type": "lathe",
    "profile": [
     [
      0.13,
      0.3
     ],
     [
      0.135,
      0.34
     ],
     [
      0.15,
      0.36
     ],
     [
      0.15,
      0.39
     ],
     [
      0.12,
      0.42
     ],
     [
      0.115,
      0.6
     ],
     [
      0.1,
      0.78
     ],
     [
      0.095,
      0.83
     ]
    ],
    "segments": 24,
    "meridians": 8
   },
   "at": [
    0,
    0,
    0
   ],
   "look": {
    "fill": "dark",
    "weight": 0.65,
    "alpha": 0.85
   },
   "source": "model-estimate",
   "note": "Hidden below stall in source photo. Entire foot/pedestal shape, construction, material and proportions are agent-inferred completion; photo is not direct evidence. Both size and shape remain inferred."
  },
  {
   "id": "fluted-post-core",
   "label": "Fluted Post Core",
   "role": "mass",
   "certainty": "inferred",
   "basis": [
    "visible-outer-form",
    "single-head"
   ],
   "stage": 1,
   "shape": {
    "type": "lathe",
    "profile": [
     [
      0.095,
      0.76
     ],
     [
      0.093,
      1.2
     ],
     [
      0.077,
      2.9
     ],
     [
      0.08,
      3.21
     ],
     [
      0.095,
      3.23
     ],
     [
      0.095,
      3.27
     ]
    ],
    "segments": 24,
    "meridians": 8
   },
   "at": [
    0,
    0,
    0
   ],
   "look": {
    "fill": "dark",
    "weight": 0.65,
    "alpha": 0.85
   },
   "source": "photo",
   "note": "Photo supports only the short exposed upper ridged shaft silhouette. Hidden lower continuation, full core, rotational symmetry and chosen lengths/radii are inferred; no cast-iron material identification or measurement."
  },
  {
   "id": "post-raised-flutes",
   "label": "Post Raised Flutes",
   "role": "detail",
   "certainty": "inferred",
   "basis": [
    "visible-outer-form",
    "single-head"
   ],
   "stage": 1,
   "shape": {
    "type": "tube",
    "path": [
     [
      0.09,
      0.82,
      0
     ],
     [
      0.088,
      1.2,
      0
     ],
     [
      0.074,
      2.85,
      0
     ],
     [
      0.075,
      3.17,
      0
     ]
    ],
    "radius": 0.007,
    "sides": 4,
    "samples": 4
   },
   "at": [
    0,
    0,
    0
   ],
   "look": {
    "fill": "dark",
    "weight": 0.5,
    "alpha": 0.7
   },
   "repeat": {
    "count": 12,
    "radial": {
     "axis": "y",
     "center": [
      0,
      0,
      0
     ],
     "span": 360
    }
   },
   "source": "photo",
   "note": "Visible upper shaft looks ridged. Twelve repeated flutes, profiles, full hidden lengths and radial spacing are model choices, not a published count or measured/traced geometry."
  },
  {
   "id": "ornamental-neck-collars",
   "label": "Ornamental Neck Collars",
   "role": "identity",
   "certainty": "inferred",
   "basis": [
    "visible-outer-form",
    "single-head"
   ],
   "stage": 2,
   "shape": {
    "type": "lathe",
    "profile": [
     [
      0.08,
      3.2
     ],
     [
      0.1,
      3.23
     ],
     [
      0.1,
      3.27
     ],
     [
      0.085,
      3.29
     ],
     [
      0.085,
      3.34
     ],
     [
      0.102,
      3.36
     ],
     [
      0.102,
      3.4
     ],
     [
      0.085,
      3.43
     ],
     [
      0.08,
      3.48
     ],
     [
      0.1,
      3.5
     ],
     [
      0.1,
      3.53
     ],
     [
      0.08,
      3.57
     ]
    ],
    "segments": 24,
    "meridians": 8
   },
   "at": [
    0,
    0,
    0
   ],
   "look": {
    "fill": "dark",
    "weight": 0.65,
    "alpha": 0.85
   },
   "source": "photo",
   "note": "Visible stacked collar-like transitions below cradle support general motif only. Exact lathe profile, rear continuation and dimensions remain inferred; material unverified."
  },
  {
   "id": "castiron-scroll-cradle",
   "label": "Castiron Scroll Cradle",
   "role": "identity",
   "certainty": "inferred",
   "basis": [
    "visible-outer-form",
    "single-head"
   ],
   "stage": 2,
   "shape": {
    "type": "tube",
    "path": [
     [
      -0.172,
      3.855,
      0
     ],
     [
      -0.17,
      3.88,
      0
     ],
     [
      -0.195,
      3.899,
      0
     ],
     [
      -0.224,
      3.88,
      0
     ],
     [
      -0.219,
      3.837,
      0
     ],
     [
      -0.189,
      3.75,
      0
     ],
     [
      -0.118,
      3.67,
      0
     ],
     [
      0,
      3.63,
      0
     ],
     [
      0.118,
      3.67,
      0
     ],
     [
      0.189,
      3.75,
      0
     ],
     [
      0.219,
      3.837,
      0
     ],
     [
      0.224,
      3.88,
      0
     ],
     [
      0.195,
      3.899,
      0
     ],
     [
      0.17,
      3.88,
      0
     ],
     [
      0.172,
      3.855,
      0
     ]
    ],
    "radius": [
     0.014,
     0.017,
     0.023,
     0.027,
     0.03,
     0.027,
     0.026,
     0.035,
     0.026,
     0.027,
     0.03,
     0.027,
     0.023,
     0.017,
     0.014
    ],
    "sides": 8,
    "samples": 6
   },
   "at": [
    0,
    0,
    0
   ],
   "look": {
    "fill": "dark",
    "weight": 1.2,
    "alpha": 0.95
   },
   "source": "photo",
   "note": "Open curved cradle visible under head. Tube path, symmetry, thickness and attachment construction are inferred from perspective, not traced; cast-iron label is unverified."
  },
  {
   "id": "mantle-feed-stem",
   "label": "Mantle Feed Stem",
   "role": "structure",
   "certainty": "inferred",
   "basis": [
    "visible-outer-form",
    "single-head"
   ],
   "stage": 2,
   "shape": {
    "type": "cylinder",
    "radius": 0.022,
    "height": 0.36,
    "segments": 12,
    "ribs": 0
   },
   "at": [
    0,
    3.56,
    0
   ],
   "look": {
    "fill": "dark",
    "weight": 0.65
   },
   "source": "photo",
   "note": "A narrow central upright is visible between cradle and bowl. Its modeled cylinder and dimensions are inferred; feed/gas function is not established by the photo."
  },
  {
   "id": "lantern-lower-bowl",
   "label": "Lantern Lower Bowl",
   "role": "identity",
   "certainty": "inferred",
   "basis": [
    "visible-outer-form",
    "single-head"
   ],
   "stage": 3,
   "shape": {
    "type": "lathe",
    "profile": [
     [
      0,
      3.84
     ],
     [
      0.2,
      3.84
     ],
     [
      0.235,
      3.86
     ],
     [
      0.255,
      3.9
     ],
     [
      0.253,
      3.935
     ],
     [
      0.235,
      3.945
     ],
     [
      0.235,
      3.96
     ],
     [
      0.27,
      3.965
     ],
     [
      0.273,
      3.985
     ],
     [
      0.262,
      4.005
     ],
     [
      0.245,
      4.015
     ]
    ],
    "segments": 24,
    "meridians": 8
   },
   "at": [
    0,
    0,
    0
   ],
   "look": {
    "fill": "dark",
    "weight": 0.65,
    "alpha": 0.85
   },
   "source": "photo",
   "note": "Lower dark bowl/ring silhouette visible; complete radial profile, closed underside and depth are inferred, not measured."
  },
  {
   "id": "clear-tapered-lantern-glass",
   "label": "Clear Tapered Lantern Glass",
   "role": "mass",
   "certainty": "inferred",
   "basis": [
    "visible-outer-form",
    "single-head"
   ],
   "stage": 3,
   "shape": {
    "type": "lathe",
    "profile": [
     [
      0.245,
      3.99
     ],
     [
      0.255,
      4.06
     ],
     [
      0.37,
      4.55
     ],
     [
      0.395,
      4.61
     ]
    ],
    "segments": 32,
    "meridians": 8
   },
   "at": [
    0,
    0,
    0
   ],
   "look": {
    "fill": "glass",
    "weight": 0.35,
    "alpha": 0.24,
    "glow": 0.04
   },
   "source": "photo",
   "note": "Photo shows tapered transparent-looking enclosure. Actual glazing composition, thickness, segmentation and complete lathe surface are unverified/inferred; dimensions not measured."
  },
  {
   "id": "broad-bell-cap",
   "label": "Broad Bell Cap",
   "role": "identity",
   "certainty": "inferred",
   "basis": [
    "visible-outer-form",
    "single-head"
   ],
   "stage": 4,
   "shape": {
    "type": "lathe",
    "profile": [
     [
      0.395,
      4.59
     ],
     [
      0.414,
      4.59
     ],
     [
      0.435,
      4.585
     ],
     [
      0.451,
      4.599
     ],
     [
      0.455,
      4.62
     ],
     [
      0.447,
      4.643
     ],
     [
      0.425,
      4.656
     ],
     [
      0.413,
      4.68
     ],
     [
      0.41,
      4.72
     ],
     [
      0.365,
      4.78
     ],
     [
      0.29,
      4.83
     ],
     [
      0.22,
      4.86
     ],
     [
      0.19,
      4.875
     ]
    ],
    "segments": 32,
    "meridians": 8
   },
   "at": [
    0,
    0,
    0
   ],
   "look": {
    "fill": "dark",
    "weight": 0.65,
    "alpha": 0.95
   },
   "source": "photo",
   "note": "Broad dark rounded cap silhouette visible. Profile samples, circular completion, underside depth and radius remain inferred; no surveyed or orthographic data."
  },
  {
   "id": "cap-raised-eave-bead",
   "label": "Cap Raised Eave Bead",
   "role": "detail",
   "certainty": "inferred",
   "basis": [
    "visible-outer-form",
    "single-head"
   ],
   "stage": 4,
   "shape": {
    "type": "lathe",
    "profile": [
     [
      0.451,
      4.607
     ],
     [
      0.455,
      4.62
     ],
     [
      0.452,
      4.633
     ]
    ],
    "segments": 32,
    "meridians": 8
   },
   "at": [
    0,
    0,
    0
   ],
   "look": {
    "fill": "dark",
    "weight": 1.1,
    "alpha": 0.9
   },
   "source": "photo",
   "note": "Photo supports a projecting cap edge only; separate raised bead construction and tiny profile dimensions are inferred."
  },
  {
   "id": "vent-bell",
   "label": "Vent Bell",
   "role": "identity",
   "certainty": "inferred",
   "basis": [
    "visible-outer-form",
    "single-head"
   ],
   "stage": 4,
   "shape": {
    "type": "lathe",
    "profile": [
     [
      0,
      4.94
     ],
     [
      0.23,
      4.95
     ],
     [
      0.23,
      4.975
     ],
     [
      0.2,
      5.01
     ],
     [
      0.145,
      5.04
     ],
     [
      0.08,
      5.055
     ]
    ],
    "segments": 24,
    "meridians": 8
   },
   "at": [
    0,
    0,
    0
   ],
   "look": {
    "fill": "dark",
    "weight": 0.65,
    "alpha": 0.85
   },
   "source": "photo",
   "note": "Small upper dome and dark gap visible. Ventilation function, hidden inner cavity, full radial profile and dimensions are not established."
  },
  {
   "id": "vent-slot-rim",
   "label": "Vent Slot Rim",
   "role": "detail",
   "certainty": "inferred",
   "basis": [
    "height",
    "head-diameter",
    "identity-limits"
   ],
   "stage": 4,
   "shape": {
    "type": "cylinder",
    "radius": 0.009,
    "height": 0.08,
    "segments": 6
   },
   "at": [
    0.175,
    4.87,
    0.0
   ],
   "look": {
    "fill": "dark",
    "weight": 0.7
   },
   "repeat": {
    "count": 12,
    "radial": {
     "axis": "y",
     "center": [
      0,
      0,
      0
     ],
     "span": 360
    }
   },
   "source": "model-estimate",
   "note": "Fine construction is not independently resolved in reference. Exact repeated count, section, hidden sides and shape are agent-authored inferred details, not literal photo evidence or measurements. Legacy name is not verified type/material/function."
  },
  {
   "id": "little-loop-finial",
   "label": "Little Loop Finial",
   "role": "identity",
   "certainty": "inferred",
   "basis": [
    "visible-outer-form",
    "single-head"
   ],
   "stage": 5,
   "shape": {
    "type": "tube",
    "path": [
     [
      -0.028,
      5.015,
      0
     ],
     [
      -0.05,
      5.04,
      0
     ],
     [
      -0.042,
      5.075,
      0
     ],
     [
      0,
      5.087,
      0
     ],
     [
      0.042,
      5.075,
      0
     ],
     [
      0.05,
      5.04,
      0
     ],
     [
      0.028,
      5.015,
      0
     ]
    ],
    "radius": 0.013,
    "sides": 6,
    "samples": 6
   },
   "at": [
    0.0,
    0.03,
    0.0
   ],
   "look": {
    "fill": "dark",
    "weight": 1.1,
    "alpha": 0.95
   },
   "source": "photo",
   "note": "Small loop-like top silhouette visible. Tube path, rear form, mounting detail and dimensions inferred; no documented functional identity."
  },
  {
   "id": "mantle-burner-pipe",
   "label": "Mantle Burner Pipe",
   "role": "structure",
   "certainty": "inferred",
   "basis": [
    "height",
    "head-diameter",
    "identity-limits"
   ],
   "stage": 3,
   "shape": {
    "type": "cylinder",
    "radius": 0.018,
    "height": 0.31,
    "segments": 10
   },
   "at": [
    0,
    3.98,
    0
   ],
   "look": {
    "fill": "dark",
    "weight": 0.65,
    "alpha": 0.85
   },
   "source": "model-estimate",
   "note": "Internal/hidden component construction cannot be established from reference. Agent-inferred support/fill geometry only; burner, porcelain and flue terminology does not verify gas fuel, material or function. Both axes inferred."
  },
  {
   "id": "warm-inner-gas-mantle",
   "label": "Warm Inner Gas Mantle",
   "role": "data",
   "certainty": "inferred",
   "basis": [
    "visible-outer-form",
    "single-head"
   ],
   "stage": 3,
   "shape": {
    "type": "lathe",
    "profile": [
     [
      0.025,
      4.23
     ],
     [
      0.06,
      4.25
     ],
     [
      0.067,
      4.34
     ],
     [
      0.06,
      4.43
     ],
     [
      0.04,
      4.46
     ],
     [
      0,
      4.46
     ]
    ],
    "segments": 16,
    "meridians": 8
   },
   "at": [
    0,
    0,
    0
   ],
   "look": {
    "fill": "auto",
    "tone": "bright",
    "weight": 1.3,
    "glow": 1,
    "alpha": 0.95
   },
   "source": "photo",
   "note": "A pale narrow interior element is visible through enclosure. Its mantle/gas identity, light source technology, warm glow and modeled profile are not established; geometry and size remain inferred."
  },
  {
   "id": "finial-base-socket",
   "role": "structure",
   "certainty": "inferred",
   "stage": 5,
   "basis": [
    "height",
    "head-diameter",
    "identity-limits"
   ],
   "shape": {
    "type": "cylinder",
    "radius": 0.055,
    "height": 0.06,
    "segments": 16
   },
   "at": [
    0.0,
    5.035,
    0.0
   ],
   "look": {
    "fill": "dark",
    "weight": 0.6,
    "alpha": 0.9
   },
   "source": "model-estimate",
   "note": "Fine construction is not independently resolved in reference. Exact repeated count, section, hidden sides and shape are agent-authored inferred details, not literal photo evidence or measurements. Legacy name is not verified type/material/function."
  },
  {
   "id": "neck-cradle-moulded-saddle",
   "role": "identity",
   "certainty": "inferred",
   "basis": [
    "visible-outer-form",
    "single-head"
   ],
   "shape": {
    "type": "lathe",
    "profile": [
     [
      0.07,
      3.53
     ],
     [
      0.085,
      3.57
     ],
     [
      0.095,
      3.59
     ],
     [
      0.095,
      3.62
     ],
     [
      0.075,
      3.66
     ]
    ],
    "segments": 24,
    "meridians": 8
   },
   "look": {
    "fill": "dark",
    "weight": 0.85
   },
   "stage": 2,
   "source": "photo",
   "note": "Visible dark neck/cradle transition supports location only. Specific saddle construction, revolved profile, hidden continuation and dimensions inferred."
  },
  {
   "id": "lower-bowl-attachment-ears",
   "role": "identity",
   "certainty": "inferred",
   "basis": [
    "height",
    "head-diameter",
    "identity-limits"
   ],
   "shape": {
    "type": "sphere",
    "radii": [
     0.045,
     0.032,
     0.035
    ],
    "lat": 4,
    "lon": 12
   },
   "at": [
    0.225,
    3.888,
    0.0
   ],
   "mirror": "x",
   "look": {
    "fill": "dark",
    "weight": 0.9
   },
   "stage": 3,
   "source": "model-estimate",
   "note": "Fine construction is not independently resolved in reference. Exact repeated count, section, hidden sides and shape are agent-authored inferred details, not literal photo evidence or measurements. Legacy name is not verified type/material/function."
  },
  {
   "id": "mantle-porcelain-lower-socket",
   "role": "detail",
   "certainty": "inferred",
   "basis": [
    "height",
    "head-diameter",
    "identity-limits"
   ],
   "shape": {
    "type": "cylinder",
    "radius": 0.047,
    "height": 0.045,
    "segments": 16
   },
   "at": [
    0,
    4.205,
    0
   ],
   "look": {
    "fill": "dark",
    "weight": 0.8
   },
   "stage": 3,
   "source": "model-estimate",
   "note": "Internal/hidden component construction cannot be established from reference. Agent-inferred support/fill geometry only; burner, porcelain and flue terminology does not verify gas fuel, material or function. Both axes inferred."
  },
  {
   "id": "cast-leaf-neck-relief",
   "role": "identity",
   "certainty": "inferred",
   "basis": [
    "height",
    "head-diameter",
    "identity-limits"
   ],
   "stage": 2,
   "shape": {
    "type": "tube",
    "path": [
     [
      0.075,
      3.3,
      0
     ],
     [
      0.088,
      3.37,
      0
     ],
     [
      0.088,
      3.43,
      0
     ],
     [
      0.075,
      3.49,
      0
     ]
    ],
    "radius": [
     0.007,
     0.009,
     0.008,
     0.004
    ],
    "sides": 4,
    "samples": 3
   },
   "repeat": {
    "count": 6,
    "radial": {
     "axis": "y",
     "center": [
      0,
      0,
      0
     ],
     "span": 360
    }
   },
   "look": {
    "fill": "dark",
    "weight": 0.85,
    "alpha": 0.9
   },
   "source": "model-estimate",
   "note": "Fine construction is not independently resolved in reference. Exact repeated count, section, hidden sides and shape are agent-authored inferred details, not literal photo evidence or measurements. Legacy name is not verified type/material/function."
  },
  {
   "id": "recessed-vent-inner-flue",
   "role": "structure",
   "certainty": "inferred",
   "basis": [
    "height",
    "head-diameter",
    "identity-limits"
   ],
   "stage": 4,
   "at": [
    0,
    4.865,
    0
   ],
   "shape": {
    "type": "cylinder",
    "radius": 0.11,
    "height": 0.085,
    "segments": 16
   },
   "look": {
    "fill": "dark",
    "weight": 0.45,
    "alpha": 0.8
   },
   "source": "model-estimate",
   "note": "Internal/hidden component construction cannot be established from reference. Agent-inferred support/fill geometry only; burner, porcelain and flue terminology does not verify gas fuel, material or function. Both axes inferred."
  }
 ],
 "anchors": {
  "base": {
   "point": [
    0,
    0,
    0
   ],
   "up": [
    0,
    1,
    0
   ]
  }
 },
 "presentation": {
  "framing": {
   "yaw": 15,
   "pitch": 5,
   "fit": 1.1
  },
  "views": [
   {
    "id": "photo",
    "label": "Photo-side silhouette",
    "yaw": 0,
    "pitch": 0,
    "distance": 1.05
   },
   {
    "id": "lantern",
    "label": "Single tapered lantern and scroll cradle",
    "yaw": 12,
    "pitch": 3,
    "target": "clear-tapered-lantern-glass",
    "distance": 2.2
   }
  ],
  "atmosphere": {
   "haze": 0.15,
   "grid": false,
   "projector": false,
   "motes": 0
  },
  "occlusion": "xray",
  "certainty_style": "subtle",
  "background": "deep",
  "float": 0
 },
 "animation": {
  "assembly": {
   "style": "ceremony",
   "seconds": 7,
   "interference": false
  },
  "idle": {
   "life": "off",
   "events": [],
   "strength": 0
  },
  "camera": {
   "drift": 0,
   "breathe": 0
  },
  "reduced_motion": "still"
 },
 "authoring": {
  "tier": "masterpiece",
  "research": "done",
  "sources": [
   "photo"
  ],
  "identity": [
   {
    "feature": "Single tapered glass lantern under broad circular bell cap",
    "parts": [
     "clear-tapered-lantern-glass",
     "broad-bell-cap",
     "vent-bell",
     "little-loop-finial"
    ]
   },
   {
    "feature": "Fluted cast iron shaft and ornamental scroll neck",
    "parts": [
     "fluted-post-core",
     "post-raised-flutes",
     "ornamental-neck-collars",
     "castiron-scroll-cradle"
    ]
   }
  ],
  "review_rounds": 0,
  "outcome": "good",
  "next": [],
  "rounds": [
   {
    "round": 1,
    "result": "baseline",
    "minutes": 0.5,
    "changes": [
     "draft"
    ],
    "summary": "The ornamental neck reads as an unadorned U-shaped tubular yoke with flat-cut, upright tips. The reference has compact arms returning inward"
   },
   {
    "round": 2,
    "result": "kept",
    "minutes": 1.3,
    "changes": [
     "D1",
     "D2",
     "D3",
     "D4"
    ],
    "summary": "The lower head reads as a regular smooth U-shaped tube over a stack of rotationally symmetric rings. The reference has a tighter cast juncti"
   },
   {
    "round": 3,
    "result": "kept",
    "minutes": 1.3,
    "changes": [
     "D1",
     "D2",
     "D5",
     "D6"
    ],
    "summary": "The lower neck is a conspicuously round, swollen ribbed bulb. In the reference crop the collar under the U-cradle is a narrower, more uprigh"
   },
   {
    "round": 4,
    "result": "kept",
    "minutes": 1.5,
    "changes": [
     "D1",
     "D11",
     "D7",
     "D9"
    ],
    "summary": "The two support arms read as a smooth, symmetric U tube with tiny round end pads. The photographed casting has tighter changes of curvature "
   }
  ],
  "provenance_note": "Provenance-only audit; physical payload unchanged; historical independent judgement preserved in before backup and sealed checkpoints, not a fresh critique. Live critic removed because provenance edits invalidate its scene hash; no new independent round. Legacy fuel/material/functional labels remain unverified.",
  "critic": {
   "scene_sha256": "7ef35176ae31dfb671c9b01f09282efa0d4b058e42c411446a43132ca57a618b",
   "verdict": "good",
   "scores": {
    "silhouette": 2,
    "proportions": 2,
    "identity": 2,
    "depth": 2,
    "composition": 3,
    "assembly": 3,
    "motion": 3,
    "density": 3,
    "honesty": 3
   },
   "round": 2,
   "defects": 5
  }
 }
}