feat(migration): haloai → hal0 model migration script#22
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PLAN §11 step 2. Reads a curated 14-entry allow-list of model dirs from the shared HF cache (default /mnt/ai-models/huggingface/hub) and writes a hal0 registry.toml describing the resolved entries. Models stay on NFS — only the registry file is emitted. Scope is intentionally narrow per session decision: models only. Slots, providers, upstreams, and OpenWebUI state all start fresh — operator runs FirstRun wizard post-install to bind models to slots. Allow-list covers the daily-driver chat/coder models on haloai: Qwen3-Coder-Next (GGUF + AMD MXFP4), Qwen3.6-27B/35B-A3B, Qwen3.6-27B-Heretic-NEO-CODE, Qwen3-Coder-REAP-25B, Qwen3-Zero- Coder-Reasoning-0.8B-NEO, Qwen3-Next-80B-Thinking, Qwen3.5 family (0.8B/4B/9B/35B-A3B), kappa-20b (MXFP4 + i1 GGUF). Llama 4 / Llama 4 Scout / Nemotron 115B requested but not on disk — documented as post-cutover `hal0 model pull` in docs/migration.md. 19 hermetic pytest tests, no real /mnt/ai-models touched. Every emitted entry re-validates via the hal0.registry.Model pydantic schema. Closes task #27. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Closes #27. 14-entry curated allow-list, 19 tests pass, docs/migration.md covers full 5-phase cutover.