Answers "can this hardware run model X at quantization level Y?" by
querying the HuggingFace Hub API for parameter count (safetensors) and
architecture (config.json), then applying the standard VRAM formula:
weights + KV cache (GQA-aware) + overhead. Reference algorithm from
LLMcalc (no code copied, unlicensed upstream).
Bump to 0.22.0.
Closes: #64