Changes in version 0.3.6-0.1.0                     

  - Replaced the experimental causal contextual-state retrieval surface
    with a native, retrieval-trained LFM2.5-ColBERT-350M GGUF profile.
    New colbert_*() APIs own the published query/document prefixes,
    non-causal encoder, 128-dimensional L2-normalized token projection,
    punctuation filtering, and MaxSim scoring contract.
    bebel_pooled_states() and bebel_token_states() are removed: causal
    generator states are not a late-interaction retriever.
  - Established the vendored BebeLM Rust backend as a closed, validated
    CPU profile registry rather than a generic GGUF loader. New model
    families add their own tensor contract and execution profile; BebeLM
    generation continues to support its LFM2.5-8B-A1B profile.
  - Added a dedicated pure-Rust gemma-embedding backend for the 300M
    EmbeddingGemma GGUF architecture, including its SentencePiece
    tokenizer, bidirectional global/symmetric-window attention schedule,
    mean pooling, both learned dense projections, task-specific
    query/document prompts, L2 normalization,
    and 768/512/256/128-dimensional Matryoshka outputs. Batches use
    bounded sequence packing without cross-sequence attention and
    parallel GeGLU evaluation. New embeddinggemma_*() APIs keep these
    retrieval-trained dense embeddings separate from BebeLM generation.
  - Fixed AArch64 scalar and NEON artifacts to avoid dot-product
    instructions; the dot-product artifact alone is compiled with that
    CPU feature. Added an AArch64 cross-build check for all
    runtime-dispatch variants.
  - Exposed the existing "dotprod" backend as an explicit R selection.
  - Refocused the package on native BebeLM model loading, tokenization,
    retrieval-trained encoders, generation, persistent agents, R tool
    calls, and async jobs.
  - Removed the R-side agent framework, interactive frontend, session
    tree, extension layer, provider registry, and fuzzy-file-search
    code.
  - Added S7 classes with property validators for model options, agent
    options, generation options, tool specs, and native pointer refs.
  - Added async model and agent generation through Rust worker threads.
    Jobs are represented as BebelAsyncJob objects and collected from R
    with bebel_async_collect().
  - Removed the model execution mutex so async jobs can run concurrently
    while sharing immutable memory-mapped weights and keeping
    independent caches.
  - Surfaced the shared-weight model design: agents own
    transcript/decode state while sharing loaded GGUF weights through
    the Rust backend.
  - Updated README, vignettes, pkgdown metadata, tinytests, and the webR
    package-load check around real BebeLM runs and the lean public API.
  - Hardened native SIMD dispatch: scalar builds use a baseline target
    and optimized dylibs are selected by runtime CPU checks.

                     Changes in version 0.0.0.9000                      

  - Initial experimental scaffold.