Two eviction fixes folded into 0.1.30:

- VRAM eviction: a diffusers pipeline under device_map/accelerate offload
  (balanced/disk/model/sequential) or bitsandbytes quantization REJECTS
  .to('cpu') — the naive move silently left the weights resident and stranded
  VRAM, feeding the OOM death-spiral where the next load OOMs on a near-full
  card. Route pipelines (those exposing `components`) through the thorough
  _free_pipeline_vram (remove accelerate hooks -> drop component refs ->
  empty_cache); plain non-pipeline models still use a simple .to('cpu').

- RAM eviction: never unload the LIVE model (active_in_vram OR current_model_key)
  that a request loop keeps reusing. An offloaded pipeline's host RAM IS the live
  model, so evicting it between same-model requests just forces an immediate
  reload — churning VRAM/RAM and re-stranding device_map weights while freeing
  nothing lasting. The last-resort active-model eviction now fires only for a
  STALE active model (no longer the current one).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RdMufYvtTbtGDWsiZVoXce