p0-1: workspace + kb-core domain types, traits, and ID recipe
Stand up the Cargo workspace (Rust 2024 / resolver=3) with the kb-core
crate per the frozen design (§3, §4, §7, §10). kb-core has zero
deps on other kb-* crates and exposes:
- Newtype IDs (AssetId / DocumentId / BlockId / ChunkId / EmbeddingId /
IndexId) with Display + FromStr that reject anything but 32 lower-hex.
- id_from + id_for_{asset,doc,block,chunk,embedding,index} per §4.2;
pinned hex test values computed via an independent JCS+blake3 tool.
- CanonicalDocument, Block (8 variants), SourceSpan, Inline (§3.4).
- Citation (5 variants) with W3C Media Fragments to_uri / parse;
round-trip property holds for every variant.
- Metadata + Provenance (§3.6); SearchQuery / SearchHit / RetrievalDetail
(§3.7); DocFilter / DocSummary mirrors of wire §2.5.
- Answer / AnswerCitation / RefusalReason / ModelRef (§3.8).
- IngestReport, JobRepo support types, VectorRecord / VectorHit.
- Component traits (SourceConnector / Extractor / Chunker / Embedder /
Retriever / LanguageModel / DocumentStore / VectorStore / JobRepo)
plus their input helpers (SourceScope / ExtractContext / ChunkPolicy
/ EmbeddingInput / GenerateRequest / TokenChunk / FinishReason).
- CoreError (§10).
- nfc + to_posix helpers (§4.1, §6.6).
20 unit tests cover ID determinism (1000-run regression), key-order
invariance, two pinned hex values, newtype rejection of bad input,
Citation round-trip for all 5 variants, and to_posix collapsing +
Korean NFC.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
altair823
f86df99fe9