codemap-semantic-index 0.2.0

Embedding-based semantic recall hook for CodeMap — registers into `codemap recall` via the recall_hooks entry-point group and adds vector search over .ai-memory/knowledge/*.yml

codemap-semantic-index

Embedding-based semantic recall plugin for codemap.

Registers an embedding ranker into codemap recall via the codemap.recall_hooks entry-point group (introduced in codemap-core 0.4.1). codemap-aimemory automatically RRF-fuses the embedding ranking with its token ranking and applies freshness decay (P4-2).

Install

pipx inject codemap codemap-semantic-index
# pulls sentence-transformers + torch (~200MB)

# Pick + download a local model (1.2GB default)
codemap embed install                   # interactive picker
codemap embed install BAAI/bge-m3       # direct

# First embed (writes <project>/.ai-memory/_semantic/)
codemap embed

# Now `codemap recall` does double-path (token + embedding) + RRF + freshness
codemap recall '<query>' --with-content

Default model

Qwen/Qwen3-Embedding-0.6B (1024 dim, 32k context, 1.2GB). Same-source training as the Qwen cloud text-embedding-v3, so switching to cloud preserves recall "feel".

Cloud backend (any OpenAI-compatible embedding API)

codemap embed backend set    # interactive picker (qwen / openai / zhipu / voyage / custom)
codemap embed backend show
codemap embed backend reset  # back to local

Four preset providers + custom for self-hosted vLLM / Ollama / TEI. Config persists to ~/.config/codemap/embedding.yaml (chmod 600).

Storage

<project_root>/.ai-memory/_semantic/
├── chunks.json    chunked text + metadata (model-independent)
├── vectors.npy    (n_chunks, 1024) float32 (model-specific)
├── model_id.txt   active backend fingerprint
└── manifest.json  text_hash → chunk_id (drives incremental)

Switching models requires codemap embed --rebuild (different vector spaces are not comparable).

Design doc

Obsidian/Notes/07-Ideas/AI-Enterprise-Delivery-System/2026-06-27-p1-3-codemap-semantic-index-设计方案.md — full spec including chunker / RRF / freshness integration.