> TBH I would have just rendered a font glyph, or failing that, grabbed an image.

If an LLM did that, people would be all up in arms about it cheating. :-)

For all its flaws, we seem to hold LLMs up to an unreasonably high bar.

That's the job description for a good programmer though. Question assumptions and requirements, and then find the simplest solution that does the job.

Just about anyone can eventually come up with a hideously convoluted HeraldicImageryEngineImplFactory<FleurDeLis>.