census: new HF model class uncovered by the registry

[github-actions]

Census coverage breach

The daily new-model watcher found Hugging Face models whose architecture class is not
mapped by the engine registry (registry/architectures.json):

  . REMOTE-CODE EchoChatForCausalLM: 1 model(s) from 1 uploader(s), e.g. ddwang2000/EchoChat
  !! UNCOVERED GPT (new class): 1 model(s), e.g. Ihatetomatoes/nanoBeard-sloop-14M
  . REMOTE-CODE PulvisForCausalLM: 1 model(s) from 1 uploader(s), e.g. bench-labs/pulvis-v2
  ? UNVERIFIABLE ShourenWSR/how-to-loop-moe (no config / no architecture) — gated repos need a token; retried next run
  ? UNVERIFIABLE SlayerLab/GoLLeM-v6-250M (no config / no architecture) — gated repos need a token; retried next run
  ? UNVERIFIABLE Supernova11c/Supernova-TeraiLLM-v1 (no config / no architecture) — gated repos need a token; retried next run
  ? UNVERIFIABLE WilliamYadi/Qwen3.5-0.8B-LiteRT-INT4-GDN-QKVZ-Experimental (no config / no architecture) — gated repos need a token; retried next run
  ? UNVERIFIABLE assassinshadow/DeepSeek-R1-Distill-Qwen-1.5B-SM8450-ExecuTorch-QNN (no config / no architecture) — gated repos need a token; retried next run
  ? UNVERIFIABLE assassinshadow/gemma-4-E2B-it-text-SM8450-ExecuTorch-QNN (no config / no architecture) — gated repos need a token; retried next run
  ? UNVERIFIABLE peonist-ai/halogen-npu-qwen3.5-2b (no config / no architecture) — gated repos need a token; retried next run
  ? UNVERIFIABLE sraivante/LMLM_97M_1 (no config / no architecture) — gated repos need a token; retried next run
  ? UNVERIFIABLE thongbuind/SAI-for-VinFast-FP32_100M (no config / no architecture) — gated repos need a token; retried next run

Fix: map the class in registry/architectures.json when a pinned backend's code really
accepts the architecture, or record why it is not an alias in registry/significant.json
and docs/arch-gaps.md (a class reviewed as significant needs real engine support, not a
mapping). Re-run python3 tools/census_watch.py to confirm.

Run: https://github.com/1bit-MONSTER/engine/actions/runs/37114808820