Create an index for the layout itself

[NNTin]

As of now we have an index of the layouts.
Inside the layout it is possible to place walls, floors, furnitures (chairs, plants, tables, decoration, ...).

• Create an index for the placable elements.
• Create an index for the characters as well.

The index should render the individual elements as well as their rotation (if they exist).

This is a big task, real benefit is produced when MCP integration follows after. However this part should be carefully designed and a proper architecture should be followed.
This can produce a lot of coding debt and this part can easily break.

[NNTin]

• this project already depends on Pixel Agents. There we are already grabbing inside their code so we can do the live-renderer or image previews
• we also have automatic vendor updates, e.g. chore(vendor): update pixel-agents to pixel-agents-hq/pixel-agents@0f823e2 #82
• we also have CI pipeline check in case the vendor has breaking changes, then we need to adjust

implementing the index for the pixel sprites means more dependency and a bigger risk it gets broken when vendor updates.

A proper concept / architecture is needed to

• spot breaking changes
• fix breaking changes
• reduce dependency of reaching inside their code base

Therefore this issue is low priority when there is no current demand for it. The benefit is currently too small and may block us. This is not a good first issue. A LLM agent will propose a working solution but if it's not carefully designed with the big architecture in mind I'll reject.