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v0.35.2 — Hiatus close-out drain

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@noahgift noahgift released this 23 May 08:56
· 77 commits to main since this release
v0.35.2
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Bug fixes + DX (last release for 3 months)

Two-PR drain before the 3-month hiatus: mega-bundle PR #1898 (subsumed
#1880/#1883/#1886/#1891/#1896/#1897, which itself subsumed #1874/#1877/#1879/#1881)

  • PR #1888 PMAT-706 smoke mode.

Fixed

  • #1874 / PMAT-702: apr eval no longer reports fake pass@1=1.0 on
    broken models. Eval now distinguishes inference failure from test failure.
  • #1877 / PMAT-703: distill teacher logits are vocab-aligned for the
    Qwen2.5-Coder 7B → 0.5B KD pair (152064 → 151936). New contract
    apr-distill-teacher-vocab-alignment-v1.yaml.
  • #1879 / PMAT-704: apr distill --backend cuda defaults Q4K teacher
    to CudaTrainerTeacher (cuBLAS), reverting the PMAT-704 Bug B
    slow-path. New contract apr-distill-teacher-backend-selection-v1.yaml.
  • #1891: apr pull qwen2.5-coder-1.5b and apr run short-name
    resolution + Pacha cache alignment. Adds qwen2.5-coder-1.5b alias.
    Filesystem paths that don't exist preserve the original path in the
    FileNotFound error (regression: chat tests).
  • #1897 (clippy): removed ..Default::default() from 5 CallbackContext
    literals in pipeline.rs where all fields are explicitly listed
    (clippy::needless_update).

Added

  • #1881 / PMAT-705: ProgressCallback wired into distill Pipeline.
    Operators can now subscribe to on_train_begin / on_epoch_begin / on_step_end / on_epoch_end / on_train_end events. New contract
    distill-pipeline-observability-v1.yaml.
  • #1888 / PMAT-706: APR_DISTILL_MAX_STEPS=N smoke-validation mode.
    Training loop early-breaks after N steps and prints a [SMOKE] summary
    with projected full-run wall time. Use case: 60s smoke before committing
    to a 50K-step run, catching cascade defects (e.g., PMAT-704 Realizar
    CPU-bound hang) without waiting hours. New contract
    apr-distill-smoke-validation-v1.yaml.
  • #1883 / #1886: dispatch wrappers for apr distill Stage D and
    Phase 5 HumanEval, baked with PMAT-701 lessons.
  • #1880: SPEC-DISTILL-001 §87 post-mortem on PMAT-704 Bug B wrong turn.
  • #1885: scripts/gx10-disk-cleanup-distill-runs.sh for the gx10 host.

Chore

  • #1896: Cargo.lock synced to aprender@0.35.1 (subsumed by #1891
    in the mega-bundle).
  • README: hiatus banner updated to reflect v0.35.2 as the last release.

Versioning

  • Root facade aprender: 0.35.1 → 0.35.2
  • Sub-crates: stay at 0.35.0
  • aprender@0.35.2 depends on apr-cli@0.35.0 — no transitive churn.
  • Only the root facade republishes to crates.io.

Verification (post-merge dogfood, 2026-05-23)

  • ✓ apr qa <qwen2.5-coder-7b-instruct-q4_k_m.gguf> Golden Output PASS
    (closes #1864 confirmed live)
  • ✓ apr run <1.5B> produces "4" via wgpu→CPU parity-fallback safety net
  • ✓ apr v0.35.x stable; ~16 merged this session
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