pf-model 1.0.10

ProcessFork model layer: weight-diff capture (LoRA / IA³ / full) + TIES & DARE merge
Documentation

pf-model

Captures model-weight diffs (LoRA, IA³, full-finetune, in-place TTT) and implements the TIES + DARE task-vector merge from agent_docs/model-layer.md.

What ships in Phase 5 (this commit)

  • [diff::ModelDiff] tagged enum + per-variant payloads.
  • [serialize::store_diff] / [serialize::load_diff]: round-trip every variant through any [pf_core::cas::BlobStore].
  • [merge::dare] / [merge::ties_merge]: the two task-arithmetic primitives, tested on small synthetic tensors.

Wire format

For Phase 5 we use a single JSON-typed wire format (model.diff.v1) for every variant. Parameter tensors are stored as Vec<f32> with shape metadata; safetensors interop lands in Phase 10's vLLM adapter where it's actually needed (no point pulling 50 kloc of safetensors deps now).