release: prepare 0.39.0 - #948
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Bump VERSION_NAME 0.38.0 -> 0.39.0 and update all version-carrying docs: - CHANGELOG: consolidate [Unreleased] under [0.39.0] with a headline summary (includes the #947 AAR-publishing CI entry, now merged to develop). - README: BOM snippet -> 0.39.0, What's New in 0.39.0, Contributors (0.39.0). - docs/antora.yml: skainet_version attribute 0.38.0 -> 0.39.0 (used in the docs' dependency snippets). - kernel-support-matrix.adoc: regenerated via generateKernelMatrix — the Android column now shows native-jni for Q8_0/Q4_0/Q4_K/Q5_K/Q6_K (the new JNI backend), replacing panama-vector; version stamp -> 0.39.0. 0.39.0 headline: on-device AI on Android becomes real — the skainet-backend-jni-cpu JNI NEON backend (~24 tok/s SmolLM2-135M Q8_0 on a Pixel 8a vs ~3.8 scalar), plus Android streaming GGUF loads (#922), linkable K/N kernel klibs (#942), the Q4_0 NEON kernel (#939), GGUF loader fail-fast (#919), and a tensor-storage correctness pass (#927-#931). Local prep only — not pushed/tagged. Cut off develop after #947 merged, so the branch already carries the AAR-publishing workflow + pinned NDK.
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aharakal
approved these changes
Aug 11, 2026
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Release preparation for 0.39.0. Version bump + all version-carrying docs; no functional code changes.
Headline
On-device AI on Android becomes real. The
skainet-backend-jni-cpuJNI NEON backend brings the hand-tuned ARM matmul kernels to Android (where FFM can't run) — measured ~24 tok/s SmolLM2-135M Q8_0 decode on a Pixel 8a vs ~3.8 scalar (6.4x), clearing the on-device usability bar. Plus: Android streaming GGUF loads (no more full-file-heap OOM, #922), linkable Kotlin/Native kernel klibs (#942), a Q4_0 NEON kernel (#939), GGUF loader fail-fast (#919), and a tensor-storage correctness pass (#927–#931).What's in this branch
gradle.propertiesVERSION_NAME0.38.0 → 0.39.0 (single source of truth; BOM re-exports it)CHANGELOG.md[Unreleased]consolidated under[0.39.0]with a headline summary (incl. the #947 AAR-publishing CI entry)README.mddocs/antora.ymlskainet_versionattribute → 0.39.0 (used in docs dependency snippets)docs/…/kernel-support-matrix.adocgenerateKernelMatrix) — the Android column now showsnative-jnifor Q8_0/Q4_0/Q4_K/Q5_K/Q6_K, replacing panama-vectorNotes
developafter ci(publish): build & publish the skainet-backend-jni-cpu AAR on release (#946) #947 merged, so the branch already carries the AAR-publishing workflow (setup-androidstep) + the pinned NDK — it's genuinely tag-ready, not just changelog-ready.gradle propertiesresolvesversion: 0.39.0; no other0.38.0version refs remain outside CHANGELOG history.develop; retarget tomain/tag per the maintainers' release flow.