{
  "scene_index": 12,
  "shot_index": 4,
  "base_plan_id": "plan_interior_full",
  "visual_domain": "interior",
  "camera": {},
  "characters": [],
  "additions": [
    {
      "type": "environment_state",
      "position": "center of the student bedroom floor",
      "note": "dark fluid stippled region forming a dense pool"
    },
    {
      "type": "environment_state",
      "position": "diagonally across the student bedroom floor, from the fluid pool toward the curtain",
      "note": "trail of stippled track marks"
    },
    {
      "type": "door_state",
      "position": "entrance to the student bedroom",
      "note": "door shown slightly open, acting as a foreground framing slit"
    }
  ],
  "t2i_prompt": "[Canon: Stained wallpaper, damp patches, pale damp-looking tiles]. Black-and-white architectural plan, top-down orthographic view, technical line drawing on white background. A small residential unit layout featuring a living room and kitchen area, a student bedroom, a master bedroom, and a bathroom. Overlay instructions: Add a camera symbol (CAM-S12-Shot4) at the threshold of the student bedroom door, pointing inward toward the back right corner with a wide FOV cone. Draw the bedroom door slightly open. In the center of the bedroom floor, draw a dark fluid stippled region. From this region, draw a trail of stippled track marks leading diagonally toward the window curtain area. No characters are present. Keep the style strictly 2D technical drawing.",
  "legend_updates": [
    {
      "symbol": "CAM-S12-Shot4",
      "meaning": "Camera (WS, low angle)"
    },
    {
      "symbol": "Dark stippled region",
      "meaning": "Fluid accumulation"
    },
    {
      "symbol": "Dotted trail",
      "meaning": "Track marks"
    }
  ]
}