# @waggle/hive-mind-core > **The substrate.** SQLite + sqlite-vec hybrid search, bitemporal knowledge graph, frame compression, identity layer, awareness layer, embedder providers, harvest pipeline. ## What this is `hive-mind-core` is the persistence and retrieval substrate that powers Waggle OS's memory layer. The public Apache-2.0 distribution lives in `marolinik/hive-mind` and is produced from this canonical source by a maintainer-curated forward-port. > **Publication boundary:** this monorepo package is private and must never be > published or pushed as a raw subtree split. It contains Waggle-only files and > interleaved `install_audit` schema/migration logic. The curated forward-port > adapts the public layout and imports, then removes all excluded material. ## What's inside | Module | Purpose | |---|---| | `mind/db.ts` | `MindDB` — better-sqlite3 + sqlite-vec hybrid backend | | `mind/frames.ts` | `FrameStore` — I/P/B frame types + compaction + dedup | | `mind/sessions.ts` | `SessionStore` — session lifecycle + ensureActive | | `mind/search.ts` | `HybridSearch` — FTS5 + vec0 fused via Reciprocal Rank Fusion | | `mind/knowledge.ts` | `KnowledgeGraph` — entity/relation graph + bitemporal validity | | `mind/identity.ts` | `IdentityLayer` — personal identity persistence | | `mind/awareness.ts` | `AwarenessLayer` — active task/state tracking | | `mind/scoring.ts` | Scoring profiles (recency, popularity, relevance, importance) | | `mind/reconcile.ts` | Index reconciliation (FTS, vec, orphan cleanup) | | `mind/ontology.ts` | Entity ontology + validation | | `mind/concept-tracker.ts` | Concept mastery tracking | | `mind/entity-normalizer.ts` | Entity name normalization + dedup | | `mind/{api,inprocess,litellm,ollama}-embedder.ts` | Embedder providers + provider factory | | `mind/embedding-provider.ts` | `createEmbeddingProvider` — runtime embedder selection + quota | | `harvest/pipeline.ts` | `HarvestPipeline` — universal ingestion into frames | | `harvest/dedup.ts` | Cross-source dedup | | `harvest/{chatgpt,claude,claude-code,gemini,perplexity,markdown,plaintext,pdf,url,universal}-adapter.ts` | Per-source ingest adapters | | `harvest/source-store.ts`, `run-store.ts` | Harvest source + run persistence | | `injection-scanner.ts` | `scanForInjection` — prompt-injection detection | | `logger.ts` | `createCoreLogger` — minimal structured logger | ## Publication status - The public mirror is Apache-2.0 and excludes Waggle-only governance and audit material. - Benchmark and performance claims belong in versioned reports with their model, dataset, scorer, revision, and receipts; this README does not make an unqualified SOTA claim. - Run `scripts/oss-drift-check.sh` and the public mirror's own test and lint gates before every curated release. ## Status Migrated from `marolinik/hive-mind` into the canonical `marolinik/waggle-os` monorepo at `packages/hive-mind-core/` on 2026-04-30. Future development happens here. `scripts/oss-subtree-split.sh` is an inspection/curation starting point only; the public mirror is updated through a reviewed, curated forward-port. License: Apache-2.0.