Generate a 3D mesh (GLB) with Tripo3D from a reference image (image-to-3D) or a text prompt (text-to-3D). Use when the user wants a 3D model, mesh, game asset, printable object, VTuber/character base, or "turn this picture into 3D". Pass `image_url` (a GCS url from `popcraft_media_import_url`, `popcraft_media_upload`, or a prior `popcraft_generate_image` result) for image-to-3D — a single clean subject on a plain background, front or 3/4 view, works best; for a character use an A-pose/T-pose front view. Omit `image_url` and pass `prompt` for text-to-3D. Defaults: `model_version` "tripo-v2.5" (best quality/cost), `texture` true, `pbr` true, `quad` false (triangles — set true for a quad mesh that is easier to edit/rig in Blender; Tripo then returns FBX), `geometry_quality`/`texture_quality` "standard" ("detailed" costs more). `smart_low_poly` produces a game-ready low-poly mesh. `style` applies a Tripo preset (e.g. "person:person2cartoon", "object:clay", "object:steampunk") — list them via `popcraft_models_explore` with `type:"3d"`. Set `get_cost:true` to preflight the exact credit cost WITHOUT submitting — always do this the first time so the user can confirm. Generation takes ~1–3 minutes. On success an interactive result card is shown and refreshes itself — do NOT poll in a loop; call `popcraft_job_display` at most once if no card is visible. The finished result URL is a downloadable GLB (or FBX when quad=true) that also appears on the Popcraft /model-3d workspace, where it can be refined further with `popcraft_postprocess_3d` (retopology, retexture, stylize, mesh completion, format conversion). The result includes `project` — mention where it was saved when the user did not pick a project. Never tell the user how long the job will take or quote any estimate of generation time — the result card shows progress.