Zhihuo Container Loading

Zhihuo Container Loading: calculate how many identical boxes/cartons fit in a shipping container or rectangular space, where they go, and a 3D loading plan, using the SmartPacker exact single-SKU solver (the engine behind zhihuo.net's T1 tool). Use `pack_boxes` for any 'how many fit / loading plan / container utilisation' question with ONE carton size. Provide the box L*W*H and either a `container` preset (e.g. 40HQ) or an explicit space L*W*H - ALL IN MILLIMETRES. Explicit spaces may be larger than standard container maxima, but the exact T1 coordinate limit is 32000 mm per dimension; when that or the count safety limit is exceeded, the response is marked as a heuristic fallback and says why. For a partial load, pass `count` plus the corner flags. Set `include_image=true` only when the user wants to SEE the layout; the result includes a shareable `image_url` when the 3D renderer supports the input. Use `send_feedback` to relay the user's questions or suggestions to the maintainers.