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v4.0.0 — bundled nano-embedder major: chromadb removed, zero-config memory

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@Korrnals Korrnals released this 03 Sep 20:57
· 14 commits to main since this release
v4.0.0
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Re-cut 2026-09-03 (ADR-0022, owner decision): this release now ships under Apache-2.0 (was tagged MIT on 2026-09-03 19:43, before any installable artifacts existed). The original MIT tag and its auto-generated source archives remain MIT (per-version license fixity). All versions ≤ 3.2.0 remain MIT. See ADR-0022.

v4.0.0 — bundled nano-embedder major

Fully local memory out of the box: bundled mnema-embed-v1 (29.6 MB int8 ONNX, RU+EN, 384d) as the default embedding model; chromadb removed from the runtime (−3 CVEs, −250 MB install). No downloads, no API keys, no network — install → first search offline.

Highlights

  • NM-1c+1d (ADR-0021, epic #197) — bundled mnema-embed-v1 as default embedder (distilled in-project, RU 49% corpus, cos 0.958 to teacher); onnxruntime/tokenizers/huggingface_hub promoted to direct deps; legacy chromadb configs migrate with a deprecation warning; external providers (onnx, ollama, sentence-transformers) remain the quality escape hatch. S1m re-baseline: recall@5 0.929 → 0.875 on the 192-query corpus — the accepted −5.5 pp trade for full autonomy.
  • BF-2/3/4 benchmark framework (ADR-0020, epic #169) — S3 long-lived-session stand (fact-retention gates the future refiner), S4 availability-probe stand (read-only invariant, quarantine exclusion), S2 nightly mode with measured noise bands, 192-query judged corpus (McNemar p=4.3e-07), one-page owner report (make bench-report) with F1–F7 traffic lights.
  • License: Apache-2.0 (ADR-0022) — niche norm (mem0/letta/cognee/chroma/qdrant), explicit patent grant, trademark carve-out, NOTICE documents model provenance. Monetization model: open core; closed GUI (mnemos-eyes) planned; FSL only if triggers fire (10k stars / 25k downloads/mo / GA−1mo / first external contributor → CLA).
  • NM-1d final naming — mnema-embed-v1 (was nano-embed-v1); docs sweep 28+4 mentions.

Note on the re-cut: the v4.0.0 git tag was re-created on the Apache-2.0 commit; the original MIT-tagged snapshot (7574c47) and its auto-generated source archives remain publicly reachable and MIT-licensed. No installable artifacts (PyPI/npm/wheel/container) were ever published for the MIT cut — PyPI's mnemos-memory-server carries 3.2.0 (MIT), and 4.0.0 goes to PyPI under Apache-2.0.

Full changelog: CHANGELOG.md 4.0.0

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