Virtually stage an empty room for a listing with Flux.1 Fill

SOURCE ROOM PHOTO AND MASK
listing_living_room_empty.jpg — an empty living room with two large south-facing windows and light oak flooring, with the staging mask covering the entire open floor area, excluding a 12-inch buffer right against each wall — the floor and wall area where furniture should be added — leaving the two south-facing windows on the left wall, the 9-foot ceiling, the light oak flooring, and the recessed ceiling lights outside the mask untouched.

ROOM ARCHITECTURE TO RESPECT
the two south-facing windows on the left wall, the 9-foot ceiling, the light oak flooring, and the recessed ceiling lights. The window positions, ceiling height, floor material, and existing light fixtures are fixed facts about this real room — any furniture added must be scaled and positioned as if it physically exists inside these exact dimensions, not floating at an inconsistent scale.

STAGING BRIEF
a mid-century modern sofa in warm oatmeal fabric, a low walnut coffee table, a jute area rug, one floor lamp, and a small potted fig tree in the corner. This should read as a real, currently-occupied home, not a furniture catalog page — pieces should relate to each other the way an actual room's furniture does, such as a rug under a coffee table or a lamp within reach of a chair, not simply scattered independently around the space.

SCALE AND PLACEMENT
the sofa should read as roughly 7 feet long, comfortably fitting the wall it's placed against with about 2 feet of clearance on each side, so proportions are physically plausible relative to the fixed architecture. A sofa that would not fit through the visible doorway, or a rug that floats above the floor plane instead of lying flat on it, breaks the illusion immediately.

LIGHT MATCHING
Light every added piece of furniture using the exact light direction and color temperature already visible in the room photo from the fixed architecture's windows and fixtures — added furniture lit with a different, inconsistent light source is the most common tell of virtual staging done badly.

WHAT SHOULD NOT BE ADDED
Because there is no negative-prompt field, state this positively: the staged area contains only the furniture and style described above — no visible people, no pets, no clutter beyond what a professionally staged, not lived-in-messy, listing photo would show, and nothing that blocks the fixed architecture's windows or doorways.

DISCLOSURE CONSIDERATION
Many listing platforms and local real-estate regulations require virtually staged photos to be labeled as such rather than presented as an unstaged photo of the room's actual furnishing — this prompt produces the image itself, not the listing disclosure, so treat adding that label as a separate, necessary step handled outside this generation, not something to skip because the image already looks convincing.

CHECK BEFORE FINALIZING
Walk the generated furniture layout mentally the way a viewer would walk the real room: confirm there's still a plausible, unobstructed path from the doorway to the windows and around each major piece, since virtual staging that looks good as a static image but would be physically impossible to walk through in the real, empty room undermines the listing's credibility once a buyer visits in person.

OUTPUT
One image, identical to listing_living_room_empty.jpg — an empty living room with two large south-facing windows and light oak flooring outside the masked area, now showing a convincingly furnished version of the same physical room, lit consistently with the original photo, ready for a real-estate listing.