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Documents are stored in an encrypted SQLite vault (SQLCipher), content-addressed with BLAKE3 hashes, and indexed with LanceDB for semantic retrieval. A trust and lineage layer tracks document provenance, authorship, and policy governance across devices.\n\n## Features\n\n- **Encrypted vault** — SQLCipher-backed storage with Argon2 key derivation and ChaCha20-Poly1305 encryption\n- **Semantic search** — LanceDB vector index with Apache Arrow for fast similarity queries\n- **Content addressing** — BLAKE3 hashes ensure integrity and deduplication\n- **PDF extraction** — pdfium-render for high-fidelity document parsing\n- **CLI + desktop** — full-featured `kc_cli` plus a Tauri 2 desktop app covering the same workflow\n- **Recovery escrow** — AWS KMS backend (real SDK); Azure, GCP, and HSM adapters use local filesystem emulation only (no cloud SDK)\n\n## Quick Start\n\n### Prerequisites\n- Rust 1.77+ (2021 edition)\n- Cargo\n- Node.js 18+ and pnpm (desktop app only)\n\n### Installation\n```bash\ncargo build --release -p kc_cli\n```\n\n### Usage\n```bash\n# Initialize a new vault\n./target/release/kc_cli vault init --vault-path ./my-vault --vault-slug my-vault\n\n# Ingest documents\n./target/release/kc_cli ingest scan-folder \\\n  --vault-path ./my-vault --scan-root ~/Documents --source-kind local\n\n# Rebuild the semantic index\n./target/release/kc_cli index rebuild --vault-path ./my-vault\n```\n\n## Tech Stack\n\n| Layer | Technology |\n|-------|------------|\n| Language | Rust (2021 edition) |\n| Vault storage | SQLCipher (rusqlite + bundled) |\n| Encryption | ChaCha20-Poly1305, Argon2, BLAKE3 |\n| Vector index | LanceDB + Apache Arrow |\n| PDF parsing | pdfium-render |\n| Identity | Ed25519 (ed25519-dalek), JWK/JWKS |\n| CLI | clap 4 |\n| Desktop | Tauri 2 + TypeScript frontend |\n\n## License\n\nMIT\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fsaagpatel%2Fknowledgecore","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fsaagpatel%2Fknowledgecore","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fsaagpatel%2Fknowledgecore/lists"}