v1.2.0

Added

• analyze --capture-points: measured probing on plain dense backbones (MiniCPM5, Qwen3 dense,
  Mistral, …) via --capture-points output; the default ("output", "hidden") fails closed
  with a hint on those layouts.
• refine --lm-head-floor, matching plan; the governed 8bit path still requires measured
  support.
• Structured mtp_sidecar_bits runtime contracts in copied (byte-preserved) MTP sidecar
  metadata.
• New evaluation task categories: JSON, tool-use, multilingual, and long-context.

Changed

• Calibration evidence is checksum-bound end to end: AWQ/GPTQ analysis records the
  activation-capture manifest digest, tokenized-cache manifest digest, cache key, and dataset
  ID; the planner carries the bindings; conversion rejects a mismatched capture and packages
  activation_capture_manifest.json with the checkpoint; publication preparation and release
  audit independently revalidate it.
• Completed capture directories are immutable (completion.json present → no overwrite), and
  every committed resume chunk is validated against checkpoint row accounting.
• scripts/hf_to_mlx_bf16.py requires --revision <40-char SHA>, converts into a staging
  directory, atomically renames on success, and writes axquant_source.json with the immutable
  source identity.
• Mixed-precision plans are labeled by target BPW instead of inheriting a flat storage-class
  name.

Fixed

• Qwen3-Next adapter: fused switch_mlp/switch_glu 3-D weights now classify as expert.
  Pre-fix artifacts may have retained most expert weights at BF16 and must be regenerated.
• Capture resume now fails closed on binding drift (model, cache, --max-rows, segments, token
  budget) instead of silently mixing runs.
• AWQ/GPTQ convert-time refinement no longer crashes on bfloat16 module weights (the default
  dtype of real checkpoints).
• Affine/DWQ/AWQ quantizers build the per-group grid from the float16-stored scale (rounded
  up, never down), restoring the documented ≤ scale/2 per-element round-trip bound.
• plan/refine inject BF16 for policy-preserved tensors (norms, LM head, vision) when 16 is
  omitted from --bits, matching manual planning, instead of failing per tensor; manual
  tied-weight harmonization now refreshes scale/outlier strategies and stored BPW.
• Feasibility audits require MTP evidence only from MTP-declaring architectures, making the
  Qwen3-Next direct-track N0 gate satisfiable with tool-produced reports.
• Measured probe/KV-probe runs no longer abort when the calibration token count leaves a
  single-token trailing replay batch.
• The kv-exec runtime check now fails when executed per-layer KV bits differ from the plan
  (previously reported but not enforced), and benchmark trial timeouts kill the whole
  AX Engine process group instead of orphaning the generation.
• MTP benchmark aggregates pair numerators and denominators over counter-reporting trials
  only, instead of inflating effective_tokens_per_forward when some trials lack counters.
• prepare_development_model_card sanitizes the manifest's calibration reference along with
  the plan's (local-path leak that also broke the release-audit M1 equality invariant).
• Release audit records issues instead of crashing on wheels missing axquant/__init__.py,
  corrupt measurement-set or calibration files, and non-scalar benchmark metadata; hardware
  registry checks record all-failed raw benchmarks instead of raising.
• --kv-default-bits rejects sub-policy-floor values (2/3) at parse time instead of failing
  late in planning.
• scripts/hf_to_mlx_bf16.py writes the lm_head-synthesized shard aside and swaps atomically;
  saving onto the mmap-backed source silently corrupted every tensor in the shard.
• Ext4T scripts: union-sync verification compares content only (mtime-only differences no
  longer deadlock syncs), empty-array expansions no longer crash stock macOS bash 3.2 under
  set -u, shell-config marker blocks no longer corrupt an rc file lacking a trailing
  newline, live log/publish directories are moved aside before migrate-and-delete, and
  --status/argument handling exit correctly.
• Architecture-gate errors and inventory warnings name the adapter registry instead of
  hardcoding Qwen 3.6 (the checks were already registry-wide).
• Ext4T planning treats axquant/logs packages as host-local: layout moves only — no
  cross-host mirroring, duplicate deletion, or fingerprint-driven renames of mutable log
  trees; index loading reports the exact file and line for corrupt or incomplete records.

See the v1.1.x → v1.2.0 migration guide for action items.