Commit Graph

27 Commits

Author SHA1 Message Date
cd2213e48d feat(kebab-parse-image): P6-3 caption adapter — vision LM via trait
- 신규 모듈 `crates/kebab-parse-image/src/caption.rs` 추가:
  • `caption_image(llm, bytes, lang_hint, cfg)` — `&dyn LanguageModel`
    위에서 동작. 비전 LM (예: gemma4:e4b) 이 한 문장 객관 설명
    출력. temperature=0 / seed=0 결정성.
  • `apply_caption(llm, bytes, block, lang_hint, cfg, events)` —
    `block.caption = Some(...)` 으로 채우고 ProvenanceKind::CaptionApplied
    이벤트 1건 추가. `image.caption.enabled = false` 면 클린 no-op
    (Ok(())). LM 실패 시 block.caption None 그대로 + events 미기록.
  • 다운스케일 long-edge `[128, 1536]` 클램프. PNG passthrough hot
    path 보존, 그 외는 단일 디코드 + PNG 재인코딩.
  • 한국어 / 영어 프롬프트 분기 (lang_hint=\"ko\"/\"kor\" → 한국어).
  • `ModelCaption.model_version = \"<provider>/<prompt_template_version>\"`
    (예: \"ollama/caption-v1\") — prompt 또는 모델 회귀 감사 가능.

## kebab-core / kebab-llm-local 변경

- `kebab_core::GenerateRequest` 에 `images: Vec<String>` 필드 추가.
  `#[serde(default)]` 으로 기존 wire 페이로드 / snapshot 호환.
- `kebab-llm-local::OllamaLanguageModel` 가 req.images 를 Ollama
  `images: [base64, ...]` 와이어 필드로 라우팅.
  `#[serde(skip_serializing_if = is_empty)]` 로 비어 있을 때 wire
  shape 가 pre-P6-3 와 byte-identical.

## kebab-config

- 신규 `ImageCfg.caption: CaptionCfg`:
  - `enabled: bool` (default false)
  - `max_pixels: u32` (default 768, 클램프 [128, 1536])
  - `prompt_template_version: String` (default \"caption-v1\")
- `KEBAB_IMAGE_CAPTION_{ENABLED,MAX_PIXELS,PROMPT_TEMPLATE_VERSION}`
  3종 환경변수 추가.

## Spec deviations

`tasks/HOTFIXES.md` 2026-05-02 항목 추가:
- Symptom 1: spec p6-3 시그니처가 `&dyn LanguageModel` 인데 frozen
  trait + GenerateRequest 가 vision 미지원. → trait 확장.
- Symptom 2: spec 의 cargo feature `caption` (default OFF at compile
  time) → runtime gate 1개로 통합. base64/image/kebab-llm 외 추가
  deps 없어 cargo feature 의 binary 절감 가치 미미.

p4-1 / p4-2 / p6-3 spec 의 amends 명시.

## 테스트

`cargo test -p kebab-parse-image --test caption` — 9건 + 1 ignored:
- feature gate (disabled → no-op / Err on direct call)
- happy path (block.caption Some + Provenance CaptionApplied)
- 빈 토큰 stream → empty text + caption.is_some()
- CapturingMock 으로 req.images 라우팅 검증 (base64 1개, decode 가능)
- 한국어 / 영어 프롬프트 분기 (CapturingMock 의 system 캡처)
- LM Err → block.caption None 유지 + events 미기록
- 결정성 (동일 mock 입력 → 동일 caption)
- max_pixels 클램프 (99999 → 1536, 4000×3000 PNG 다운스케일 검증)
- opt-in 통합 (실 192.168.0.47 Ollama / gemma4:e4b → \"The image is
  a solid red color.\" 검증 완료, 4.3초)

`cargo test --workspace --no-fail-fast -j 1` 전체 pass.
`cargo clippy --workspace --all-targets -- -D warnings` pass.

## 의존성 경계

- 추가 deps: `kebab-llm` (trait 만), `base64` (이미 P6-2 에서 추가).
- dev-deps: `kebab-llm/mock` 으로 `MockLanguageModel`,
  `kebab-llm-local` (통합 테스트 전용 — 런타임 deps 에는 없음).
- forbidden 침범 없음: `kebab-source-fs / parse-md / normalize /
  chunk / store-* / embed* / search / rag / UI` 미참조.

contract: docs/superpowers/specs/2026-04-27-kebab-final-form-design.md
sections: §3.4 ImageRefBlock.caption, §3.7a ModelCaption, §9.1
caption (model-generated, low trust).
2026-05-02 06:05:39 +00:00
4ed5536c92 feat(kebab-parse-image): P6-2 OCR adapter — Ollama-vision default
- 새 모듈 `crates/kebab-parse-image/src/ocr.rs` 추가. spec 의 `OcrEngine`
  trait 그대로 + `OllamaVisionOcr` default 구현 + `apply_ocr` 헬퍼.
- `OllamaVisionOcr`: `<endpoint>/api/generate` 비스트리밍 호출,
  `images: [base64]` 필드로 이미지 전달, 프롬프트는 언어 힌트
  + 화이트리스트 언어 목록 포함. 응답 prose 를 `OcrText.joined` 로,
  prepared image 전체 영역 단일 region (confidence 1.0) 으로 wrap.
  기본 모델 `gemma4:e4b`. endpoint 비어 있으면 `models.llm.endpoint`
  로 fallback.
- 이미지 전처리: long-edge `config.image.ocr.max_pixels` (기본 1600,
  256~4096 클램프) 초과 시 PNG 로 재인코딩 (image::imageops::resize,
  Triangle filter). PNG 입력이 max 이내면 zero-copy passthrough.
- `apply_ocr` 는 OCR 성공 시 block.ocr 를 Some 으로 채우고
  ProvenanceKind::OcrApplied 이벤트 추가. 실패 시 block.ocr 는
  None 그대로 + provenance 미기록 (부분 상태 누출 금지).
- `kebab-config`: 새 `ImageCfg.ocr: OcrCfg` 블록 (enabled/engine/model
  /endpoint/languages/max_pixels). `#[serde(default)]` 로 pre-P6
  TOML 호환. `KEBAB_IMAGE_OCR_*` 환경변수 5종 추가.

## Spec deviation

원래 P6-2 spec 은 Tesseract 를 default OCR 엔진으로 지정했으나, dev /
CI 호스트에서 `libtesseract-dev` 시스템 패키지 설치를 피하려고
Ollama-vision 으로 default 를 교체. `OcrEngine` trait 추상화는 spec
그대로 보존 — Tesseract / Apple Vision / PaddleOCR 어댑터는 같은
trait 으로 추후 feature-gate 추가 가능. 자세한 내역은
`tasks/HOTFIXES.md` 2026-05-02 항목 참조.

Trust 측면: vision LM 은 hallucinate 가능. `OcrText.engine = "ollama-vision"`
필드로 consumer 가 엔진 별 신뢰 분기 가능.

## 테스트

- 신규 (`tests/ocr.rs`, 8 + 1 ignored):
  - 200 happy → OcrText 디코딩 (joined / engine / engine_version /
    region count / bbox / confidence)
  - 빈 응답 → 빈 regions
  - 5xx → Err with status + body 포함
  - 200 error envelope → Err
  - apply_ocr → block.ocr Some + Provenance OcrApplied 1건
  - apply_ocr error → block.ocr None 유지 + events 미기록
  - 4000×3000 PNG → max_pixels=1024 까지 다운스케일, aspect ratio 보존
  - from_parts max_pixels 클램프
  - opt-in `KEBAB_OCR_INTEGRATION=1` 통합 (실제 192.168.0.47 Ollama
    `gemma4:e4b` 로 \"Hello World 2026\" 전사 검증 완료)
- 신규 (`src/ocr.rs` unit): truncate, build_prompt 언어/힌트 처리
- `kebab-config` 테스트 +3: defaults, env override, pre-P6 TOML 호환

전체: `cargo test -p kebab-parse-image` 28 pass + 1 ignored,
`cargo test -p kebab-config` 20 pass,
`cargo clippy --workspace --all-targets -- -D warnings` pass.

contract: docs/superpowers/specs/2026-04-27-kebab-final-form-design.md
sections: §3.4 ImageRefBlock.ocr, §3.7a OcrText / OcrRegion, §9.1 OCR
vs caption provenance.
2026-05-02 05:38:24 +00:00
194dd34668 review(p6-1): 회차 1 지적 반영
- Cargo.toml: 미사용 deps 제거 (`serde`, `thiserror`) + dev-deps 의
  `serde_json` 중복 선언 제거.
- src/lib.rs: 변수명 `decode_warning` → `dim_warning` (16k cap 초과
  분기까지 포괄하므로 더 정확).
- src/exif_extract.rs: `ascii_field` / `u32_field` 의 dead-flexibility
  `In` 인자 제거 (모든 호출이 `In::PRIMARY` 였음). 두 단 `if let` 을
  Rust 2024 let-chain 으로 정리. EXIF 화이트리스트 출력 키를
  workspace wire-schema 컨벤션에 맞춰 snake_case 로 통일
  (`Make` → `make`, `DateTimeOriginal` → `date_time_original` 등).
- tests/common/mod.rs: 호출되지 않는 `fake_path` 헬퍼 + `Path` import
  제거.
- tests/extractor.rs: snake_case 키로 assertion 갱신.

cargo test -p kebab-parse-image — 14건 모두 pass.
cargo clippy -p kebab-parse-image --all-targets -- -D warnings — pass.
2026-05-02 05:11:40 +00:00
d11a810119 feat(kebab-parse-image): P6-1 image extractor + EXIF whitelist
- 새 crate kebab-parse-image 추가 (workspace 19개째). MediaType::Image(_)
  자산을 단일-블록 CanonicalDocument 로 변환하는 ImageExtractor 구현.
- parser_version "image-meta-v1" (§9 versioning).
- 본문은 Block::ImageRef 1건만 포함 — OCR / caption 필드는 None 으로
  남겨 두고 P6-2 / P6-3 에서 채운다.
- EXIF 화이트리스트 (§9.1, PII 표면 최소화):
  Make / Model / Software / DateTimeOriginal / Orientation /
  GPSLatitude(+Ref) / GPSLongitude(+Ref). MakerNote / Thumbnail / 기타
  태그는 폐기. DateTime 은 EXIF "YYYY:MM:DD HH:MM:SS" → ISO-8601 변환.
  GPS DMS triple + N/S/E/W ref → signed decimal degree.
- 차원: image::ImageReader 헤더만 읽어 (w, h, format) 획득. 16k×16k cap
  초과 또는 디코드 실패 → metadata.user.dimensions = null + Provenance
  Warning 이벤트 (Err 아님). 포맷 자체 인식 실패 → anyhow::Error
  (caller skip).
- SourceSpan::Region { 0, 0, w, h } 으로 전체 이미지 영역 표기. 결정성:
  동일 bytes + 동일 parser_version → 동일 doc_id + block_id (§4.2 ID
  recipe 그대로 사용).
- metadata.source_type = Reference, trust_level = Primary, lang = "und".
  title = 확장자 제외 파일명, alt = 파일명.
- 의존성 경계 (§8): kebab-core 만 + image 0.25 (default features off,
  png/jpeg/webp/gif/tiff 만), kamadak-exif 0.6, anyhow / serde /
  serde_json / time / tracing / thiserror. kebab-source-fs · parse-md ·
  store-* · embed* · llm* · rag · UI crate 미참조.
- 테스트 14개 (4 unit + 10 integration):
  • PNG 차원 추출, JPEG EXIF GPS 추출 (DMS → decimal 변환 정확도 1e-6),
    EXIF 없는 PNG → 빈 map, 손상 PNG → warning + null dims (panic 없음),
    인식 불가 bytes → Err, 결정성, 스냅샷, supports() 매칭, media_type
    불일치 거부.
  • 픽스처는 in-memory 생성 (PNG 는 image crate, EXIF JPEG 는 kamadak
    Writer 로 EXIF blob 만든 뒤 SOI 직후 APP1 splice) — 바이너리
    fixture 커밋 없음.
- HEIC / RAW 는 spec 상 v1 out of scope (image crate 미지원, Apple
  Vision sidecar 가 추후 P+ 에서 채움).
- tasks/p6/p6-1-image-extractor-exif.md status: planned → completed.

contract: docs/superpowers/specs/2026-04-27-kebab-final-form-design.md
sections: §3.4 Block::ImageRef + ImageRefBlock, §3.7a OcrText /
ModelCaption stubs, §9.1 image extraction policy, §9 versioning.
2026-05-02 05:05:47 +00:00
911fb49550 refactor(rename): kb crates → kebab — Cargo packages, folders, Rust modules
프로젝트 이름 `kb` → `kebab` rename 의 첫 단계.

- workspace `Cargo.toml`: members `crates/kb-*` → `crates/kebab-*`,
  repository URL `altair823/kb` → `altair823/kebab`.
- 18 crate 폴더 rename via `git mv` (history 보존).
- 각 crate `Cargo.toml`: `name = "kb-*"` → `"kebab-*"`, path deps
  `../kb-*` → `../kebab-*`.
- 모든 `.rs`: `kb_<id>` snake-case 모듈 path 18 개 (`kb_core`,
  `kb_config`, `kb_app`, `kb_cli`, `kb_eval`, `kb_search`, `kb_chunk`,
  `kb_normalize`, `kb_source_fs`, `kb_parse_md`, `kb_parse_types`,
  `kb_store_sqlite`, `kb_store_vector`, `kb_embed`, `kb_embed_local`,
  `kb_llm`, `kb_llm_local`, `kb_rag`) → `kebab_<id>` 일괄 sed (단어
  경계 \\b 사용해 영어 문장 안의 "kb" 약어 미오염).

CLI binary 이름 (`[[bin]] name = "kb"`), 환경변수 `KB_*`, XDG paths,
tracing target, 그리고 docs sweep 은 다음 commit 에서.

## 검증

- `cargo check --workspace` clean — 모든 crate 빌드 통과 후 commit.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-02 03:28:08 +00:00
d9a5b88d27 feat(p5-2): kb-eval metrics + compare — AggregateMetrics, CompareReport, kb eval CLI
P5-2 구현. 저장된 eval_runs / eval_query_results 위에서:

- `kb_eval::metrics`: hit@k / MRR / recall@k_doc / citation_coverage /
  groundedness / empty_result_rate / refusal_correctness 계산. NaN
  metrics (분모 0)는 JSON null. 4-decimal round + Deserialize 추가로
  aggregate_json 라운드트립.
- `kb_eval::compare`: 두 run 비교 → CompareReport (per-metric Δ + per-
  query Win/Loss/Draw/Regression). chunker_version drift 시 graceful
  doc-id fallback (chunker_version_match: "fallback_doc"), `strict`
  옵션이면 refuse.
- `render_report_md`: 인간용 Markdown (집계 + Wins/Losses/Regressions
  표).
- `SqliteStore::{load_eval_run, load_eval_query_results,
  update_eval_run_aggregate}` + owned `EvalRunRecord` /
  `EvalQueryResultRecord` 추가 — write 측 borrow-shape는 그대로.
- `kb eval` CLI: `run` (P5-1 위임), `aggregate <id>`, `compare <a> <b>
  [--strict-chunker-version] [--write-report]`. `--json` 으로 raw
  CompareReport, 기본은 Markdown 출력.

## Spec deviations (intentional, doc 명시)

- Graceful 매칭은 doc-id-only (chunker_version_match: "fallback_doc")
  — 50% span overlap은 chunker re-index 후 양쪽 chunks 동시 보존이
  현실적으로 안 돼서 P6+ 로 deferred.
- `*_with_config` 헬퍼 추가: 통합 테스트가 TempDir Config 로 드라이브.
  no-arg 형태는 Config::load(None) 로 위임.
- CLI 는 kb-cli → kb-eval 직접 wire (kb-app cycle 회피). DoD 의 "via
  kb-app" 의도는 facade 단일화였지만 cycle 발생.
- `AggregateMetrics: Deserialize` 추가 — aggregate_json 라운드트립.

## 검증

- `cargo test -p kb-eval` 30/30 (15 unit + 2 loader + 8 metrics+compare
  통합 + 7 runner). 8 통합 중 snapshot 1 건 (`compare-1.json`).
- `cargo test -p kb-store-sqlite` 33/33.
- `cargo clippy --workspace --all-targets -- -D warnings` clean.
- forbidden imports 부재 (`kb-source-fs|kb-parse|kb-normalize|kb-chunk|
  kb-store-vector|kb-embed|kb-search|kb-llm|kb-rag|kb-tui|kb-desktop|
  kb-app` — kb-app 는 metrics/compare 모듈에 부재; runner 만 사용).

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-02 03:05:13 +00:00
58a11cc2b8 feat(p5-1): kb-eval crate — golden-fixture runner + eval persistence
- new kb-eval crate: load_golden_set (YAML) + run_eval (per-query search/ask + persistence)
- new kb-store-sqlite::eval module: record_eval_run_with_results (transactional), document_exists / chunk_exists probes
- fixtures/golden_queries.yaml: 5-entry KO+EN template
- tests: 13 pass (loader: parse, dup-id, missing chunk_id; runner: elapsed, snapshot, error capture, JSONL, determinism, persistence, config_snapshot)
- per_query.jsonl mirror written to runs_dir/<run_id>/
- temperature=0 + fixed seed → byte-identical per_query.jsonl (lexical)

deviations from spec (documented in code):
- run_id uses uuid::Uuid::now_v7().simple() (timestamp-ordered hex) instead of ULID — uuid already in workspace deps
- load_golden_set_validated kept #[cfg(test)] pub(crate) — production inlines validate_against_db
- snapshot fixture uses normalized projection (id/query/mode/first_hit) — full byte-determinism covered by separate test
- index_version in config_snapshot left null (composed per call by kb-app, not config-level)

deferred to follow-up:
- App reuse across queries (currently rebuilds App per query)
- expand_path hoist to kb-config (3 crate clones now)
- --max-queries flag (deferred to P5-2 per updated spec)

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-01 18:01:09 +00:00
e35b06d0d0 feat(p4-3): kb-rag crate — full RAG pipeline + kb-app::ask wired
P4 terminal task. Implements the user-facing payoff: retrieve →
score gate → pack → render → generate → cite-validate → persist.
After this commit, `kb ask` actually works against an Ollama
backend; the pipeline grounds the answer in retrieved chunks and
refuses cleanly when the gate trips or the model self-judges.

New crate kb-rag:
- pub struct RagPipeline { retriever, llm, docs, config } — all
  Arc<dyn Trait + Send + Sync> so the pipeline shares + Sync.
- pub fn ask(query, opts) -> Result<Answer> drives the nine-stage
  flow per spec §1.
- pub struct AskOpts { k, explain, mode, temperature, seed,
  stream_sink: Option<mpsc::Sender<String>> }. k acts as a floor
  over config.search.default_k so a low-k caller can't starve
  retrieval (documented in field doc).

Pipeline stages:
1. Retrieve via the injected dyn Retriever.
2. Score gate: empty hits → NoChunks refusal (no LLM call); top-1 <
   config.rag.score_gate → ScoreGate refusal (no LLM call) with
   top-3 candidates listed in the synthesized answer text.
3. Pack: budget = config.rag.max_context_tokens.saturating_sub
   (prompt overhead). Per-hit `[#n] doc=… heading=… span=…\n<text>`
   with deterministic enumeration. If every hit's chunk is
   unfetchable from the store (deleted between search and pack),
   fall back to NoChunks refusal with a tracing::warn rather than
   feeding an empty [근거] to the LLM.
4. Render rag-v1 prompt with the spec's verbatim Korean system
   string + `[질문]/[근거]` user template.
5. Generate via dyn LanguageModel. Single-thread token loop owns
   the iterator; tokens optionally forward to opts.stream_sink (a
   `mpsc::Sender<String>`). SendError silently dropped — caller
   cancellation never panics the pipeline. After Done the loop
   reads (acc, finish_reason, usage) in lockstep with no race.
   max_completion = llm.context_tokens().saturating_sub
   (used_for_input).max(64) — explicitly NOT capped by
   config.rag.max_context_tokens (that's the packing budget for
   [근거], not the LM completion ceiling).
6. Citation extract via STRICT regex `\[#(\d{1,3})\]` (compiled
   once via OnceLock). Loose forms `[1]`, `[ #1 ]`, `[#foo]`,
   `[#1234]`, `vec![1]` are all rejected to prevent prose
   false-positives.
7. Citation validate covers four cases:
   - unknown marker (e.g. `[#7]` when only 3 packed) →
     LlmSelfJudge refusal.
   - empty answer with hits → LlmSelfJudge.
   - non-empty + no marker + matches `근거 (가|이) 부족` regex →
     LlmSelfJudge (model self-refused with the canonical phrase;
     phrase match logged via tracing::debug for observability).
   - non-empty + no marker + no refusal phrase → LlmSelfJudge
     (silent ungrounded answers are still refusals).
   - non-empty + ≥1 valid marker → grounded = true.
8. Build Answer per kb_core::Answer shape:
   - citations: filter packed list to exactly the markers cited.
     Wire format `marker: Some("[1]")` (square-bracketed bare
     index) per design §2.3, distinct from the prompt-side
     `[#n]` grammar.
   - embedding ModelRef: read from config.models.embedding for
     Vector/Hybrid; None for Lexical. Documented deviation since
     the Retriever trait doesn't expose the embedder. For
     ScoreGate/NoChunks refusals on Vector/Hybrid the embedding
     model is still recorded — the vector retriever WAS consulted
     even when the gate tripped.
   - TraceId minted as `ret_<8-hex>` from blake3(query, top_score,
     model_id, ns).
   - retrieval AnswerRetrievalSummary populated.
   - usage from the final Done chunk; latency_ms wall-clock
     fallback when the LLM reports zero.
   - created_at OffsetDateTime::now_utc().
9. Persist via SqliteStore::put_answer (new inherent method on
   SqliteStore, not on the DocumentStore trait — answers aren't
   documents and adding to kb-core was forbidden). Always inserts,
   refusals included. packed_chunks_json is null unless
   opts.explain == true.

kb-store-sqlite extension:
- pub fn put_answer(&Answer, query, packed_chunks_json) ->
  Result<AnswerId>. Maps all 22 fields of the answers table per
  V001 schema in a single INSERT under a transaction.

kb-app::ask wired:
- bail!("not yet wired (P4-3)") replaced with a real body that
  builds the retriever per opts.mode (Lexical | Vector | Hybrid),
  instantiates OllamaLanguageModel from config, constructs
  RagPipeline, calls pipeline.ask. AskOpts moves to kb-rag and is
  re-exported via `pub use kb_rag::AskOpts` so kb-cli's
  `use kb_app::AskOpts` keeps working.
- kb-app/Cargo.toml gains kb-rag, kb-llm, kb-llm-local. P3-5's
  forbids on these are lifted by P4-3 spec — kb-app is the
  orchestrator and ask requires both the trait crate and the
  Ollama adapter.
- kb-cli/main.rs's AskOpts literal updated with stream_sink: None
  for the CLI path (TUI in P9 will plumb a real sink).

Tests (kb-rag: 18; kb-app: 1 ignored):
- 3 unit in src/pipeline.rs: marker regex strictness (rejects all
  loose forms with byte-equal expectations), Send+Sync compile
  check, embedding_ref_for behavior across modes.
- 15 integration in tests/pipeline.rs covering every spec test row
  + the new "all chunks unfetchable falls back to NoChunks" guard:
  empty-hits, score-gate, grounded happy path, unknown-marker,
  prose-`[1]` rejection, `vec![1]` rejection, refusal-phrase,
  packing-budget overflow, streaming-forwards-to-mpsc, dropped-
  receiver-no-panic, usage-from-final-Done, answers-row-inserted-
  for-each-refusal-kind, determinism temp=0 seed=0, Answer JSON
  shape, unfetchable-chunks-fall-back-to-no-chunks (the new
  M3 test).
- kb-app/tests/ask_smoke.rs: 1 #[ignore]'d real-Ollama smoke that
  drives the wired ask end-to-end against `localhost:11434`.

Workspace: 319 passed / 26 ignored / 0 failed. cargo clippy
--workspace --all-targets -- -D warnings clean.

Allowed deps respected (kb-core, kb-config, kb-search, kb-llm,
kb-store-sqlite, serde, serde_json, regex, time, tracing,
thiserror) plus forced waivers anyhow (Retriever / LanguageModel
trait return types) and blake3 (TraceId minting). Forbidden
(kb-source-fs, kb-parse-md, kb-normalize, kb-chunk, kb-store-
vector direct, kb-embed* direct, kb-llm-local direct, kb-tui,
kb-desktop) all absent from `cargo tree -p kb-rag` — concrete
adapters reach the pipeline only through trait objects.

Out of scope: reranker between retrieve and pack (P+), multi-turn
chat memory (P+), LLM-as-judge eval (P5 uses rule-based
must_contain), --json streaming (buffers per §0 Q5 hybrid).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-01 15:06:10 +00:00
3e38a9bcb4 feat(p4-2): kb-llm-local crate — Ollama HTTP adapter (reqwest::blocking)
First real LanguageModel implementation. Wraps Ollama's local HTTP
API at POST {endpoint}/api/generate with stream:true, parses the
NDJSON streaming response into TokenChunk events, and maps Ollama
error states to a thiserror-derived LlmError with actionable hints.
Synchronous trait surface; reqwest::blocking handles the HTTP I/O.

Public surface:
- pub struct OllamaLanguageModel
- pub fn new(config: &Config) -> Result<Self> — lazy connect; never
  hits the network. Spec line 96.
- pub enum LlmError { Unreachable, ModelNotPulled, Timeout, Stream,
  Malformed }. Lives in this crate per spec — kb-core / kb-llm stay
  free of error taxonomy.
- impl kb_core::LanguageModel via re-export from kb-llm.

Streaming:
- POST body shape per spec §11.2: model, prompt = system + "\n\n" +
  user, stream: true, options { temperature, seed, num_ctx, stop }.
- OllamaStream owns BufReader<reqwest::blocking::Response>, reads
  NDJSON lines via read_until(b'\n'), parses each as
  {response, done, done_reason?, prompt_eval_count?, eval_count?,
  total_duration?}. Token frame → TokenChunk::Token; done frame →
  TokenChunk::Done { finish_reason, usage }.
- done_reason mapping: "length" → Length, "abort" → Aborted,
  "stop" / missing / unknown → Stop (forward-compat with future
  Ollama tags).
- Missing prompt_eval_count / eval_count default to 0 + tracing::warn
  (do NOT fail). Spec line 135.
- EOF without a done line synthesizes Done { Aborted, zeros } so
  downstream pipelines never deadlock waiting for a terminal frame.
- UTF-8: line-delimited framing means each JSON line is a complete
  UTF-8 sequence — no cross-HTTP-chunk codepoint splits to worry
  about. read_until accumulates whole lines regardless of how the
  underlying reqwest body chunks.

Error mapping (LlmError):
- reqwest::Error::is_connect() → Unreachable { endpoint, source }
  with hint "ensure `ollama serve` is running and reachable at
  <endpoint>".
- reqwest::Error::is_timeout() → Timeout.
- 200 with non-NDJSON first line (e.g., transparent-proxy HTML
  error page) → Stream(truncated body) — distinguished from
  Malformed by the iterator's has_emitted flag.
- 404 with body containing model_id (case-insensitive) OR English
  "model" + "not found" → ModelNotPulled(model_id) with hint
  "ollama pull <model_id>". Tightened beyond spec to survive
  Ollama localizing the error message (Korean / Japanese / etc.)
  while keeping the original English-substring fallback.
- Other 4xx/5xx → Stream(truncated body).
- Mid-stream JSON parse failure (after at least one valid line) →
  Malformed(line). Truncate all error bodies to 512 chars
  (chars-based, multibyte safe) so an nginx 500 page can't blow up
  the diagnostic.
- Trailing slash in endpoint stripped before formatting the URL —
  endpoint = "http://x:1234/" produces .../api/generate, not
  .../api//generate. Pinned by trailing-slash test.

Tokio note: reqwest 0.12's blocking feature internally wraps a
private current-thread tokio runtime, so cargo tree --edges normal
shows tokio. The auditable invariant is "no top-level tokio dep +
no async surface exposed to callers" — verified: src/ has zero
async/await/tokio::*. default-features = false drops default-tls
(rustls only) but does NOT drop tokio. Documented honestly in
Cargo.toml + lib.rs. Switching to ureq would remove tokio
entirely; deferred since reqwest is the spec's allowed dep.

Tests (24 total: 23 default + 1 ignored):
- 7 unit in src/ollama.rs: prompt-build, options-build, finish-
  reason mapping, truncate_body bounds (under_cap / over_cap_marker
  / multibyte_chars_not_bytes), 404+model-id heuristic.
- 3 in tests/construction.rs: ModelRef shape, context_tokens
  passthrough, lazy-connect proven via port-1 pointing.
- 13 in tests/streaming.rs: streamed tokens then Done, multibyte
  chars within a line round-trip (renamed from "split across
  chunks" to honestly reflect what's tested), Unreachable-with-
  hint, 4xx→Stream, 404→ModelNotPulled, concat-equals-canned,
  done_reason length / abort, missing eval counts default to zero,
  missing done_reason defaults to Stop, determinism-by-mock,
  trailing-slash endpoint, non-NDJSON 200 body → Stream not
  Malformed.
- 1 #[ignore] in tests/integration.rs: real Ollama on
  localhost:11434 with the configured model. Opt-in via
  cargo test -p kb-llm-local -- --ignored after `ollama serve`
  + `ollama pull`.

Workspace: 288 passed / 25 ignored / 0 failed. cargo clippy
--workspace --all-targets -- -D warnings clean. No native-tls,
no openssl in the dep graph.

Allowed deps respected: kb-core, kb-config, kb-llm, reqwest 0.12
(default-features=false; blocking, json, rustls-tls), serde,
serde_json, tracing, thiserror plus anyhow (forced by trait return
type). wiremock + tokio in [dev-dependencies] only.

Out of scope: llama.cpp / candle adapters (P+), Ollama embed
endpoint (separate adapter inside kb-embed-local if requested),
cancellation / abort tokens (P+), connection-pool tuning.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-01 14:28:34 +00:00
27c669fbf9 feat(p4-1): kb-llm crate — LanguageModel trait re-export + MockLanguageModel
Establishes the kb-llm trait crate so concrete LLM adapters (p4-2
Ollama, future llama.cpp / candle) target a stable surface. Pure re-
export of kb_core::{LanguageModel, GenerateRequest, TokenChunk,
FinishReason, TokenUsage, ModelRef} plus a feature-gated deterministic
mock for downstream RAG tests (p4-3) that need an LLM trait object
without an Ollama dependency.

MockLanguageModel (cfg(feature = "mock"), default OFF):
- Holds canned_response + canned_finish + canned_usage + (model_id,
  provider, context_tokens). Pure in-memory; no I/O.
- generate_stream() honors GenerateRequest.stop: scans every non-empty
  stop string against the canned response, takes the earliest byte
  position (Iterator::min returns the first equal element on ties so
  declaration order in req.stop wins), truncates with a direct byte-
  slice (str::find returns a UTF-8 char boundary by contract).
- When a stop matches, finish_reason is overridden to Stop (matches
  OpenAI / Ollama real-world behaviour); otherwise the caller's
  canned_finish passes through verbatim.
- Emits one TokenChunk::Token per Unicode scalar value (char), NOT per
  grapheme cluster — Hangul jamo, emoji ZWJ sequences, combining
  marks split. Acceptable for trait-shape testing; real adapters MAY
  combine. Documented in module docs.
- Always terminates with TokenChunk::Done { finish_reason, usage } even
  if the canned response is empty. The returned iterator is a boxed
  Vec<TokenChunk>::into_iter().map(Ok), trivially Send.
- Real adapters MAY return Err from generate_stream itself (e.g.
  connection refused) before any chunk is yielded; the mock never does.
  Documented for the trait re-exporter consumer audience.

Helpers:
- assert_finish_chunk(chunks) — asserts the last chunk is a Done.
  Useful for proptests asserting trait contract over random inputs.

Tests:
- cargo test -p kb-llm (no features): 2 reexport / dyn-dispatch tests.
- cargo test -p kb-llm --features mock: 9 tests including 100-case
  proptest over random Unicode strings asserting Done terminator,
  char-count == streamed Token chunks, concat == canned (truncated by
  stop), plus explicit cases for stop-string truncation, first-stop-
  match precedence, model_ref dimensions=None invariant, finish reason
  pass-through.
- All 271 workspace tests pass; clippy clean for both default and
  mock-on feature configurations.

Symbol gating verified:
- cargo build --release -p kb-llm (default): nm shows zero
  MockLanguageModel symbols.
- cargo build --release -p kb-llm --features mock: three trait-impl
  symbols present. Spec invariant "release builds MUST NOT include
  MockLanguageModel" enforced at the symbol level.

Allowed deps respected: only kb-core (path) and anyhow (workspace,
forced by trait return type). Dropped kb-config / serde / thiserror /
tracing from the spec's allowed list — they are listed as Allowed but
nothing in this skeleton crate references them, and dropping them
keeps the dependency graph slim for downstream consumers. p4-2/p4-3
will add what they need at their own dep sites.

Forbidden deps (reqwest, ureq, tokio, whisper-rs, kb-source-fs,
kb-parse-md, kb-normalize, kb-chunk, kb-store-*, kb-embed*, kb-search,
kb-rag, kb-tui, kb-desktop) all absent from cargo tree -p kb-llm.

Out of scope: real adapter (p4-2 Ollama), token counting against the
real tokenizer, server-side cancellation / abort signals (P+).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-01 13:37:46 +00:00
17d52461b2 feat(p3-5): wire kb-app facade — ingest / search / list / inspect
Replaces the P0 `bail!("not yet wired")` stubs in kb-app with real
bodies that compose the libraries shipped through P3-4. After this
commit, `cargo run -p kb-cli -- index` actually walks the workspace
and persists chunks (SQLite + optionally LanceDB), and
`cargo run -p kb-cli -- search --mode {lexical,vector,hybrid}` returns
real SearchHits with citations. `kb-app::ask` stays stubbed; P4-3
owns it.

App lifecycle (crates/kb-app/src/app.rs):
- Internal pub(crate) struct App holds the Config plus
  Arc<SqliteStore> eagerly, with embedder + LanceVectorStore behind
  OnceLock<Arc<...>> for memoization. First call pays the ~470MB
  fastembed init / Lance open; subsequent calls return the cached
  Arc::clone. OnceLock::set race losers fall back to get().cloned()
  so the lazy-init is concurrent-safe.
- One-shot CLI invocations pay the cost once at most. The P9 TUI
  (which holds an App for the session) gets memoization for free.

ingest pipeline (lib.rs):
- FsSourceConnector::scan(&scope) → per asset:
  parse_frontmatter → parse_blocks → build_canonical_document →
  MdHeadingV1Chunker.chunk → put_asset_with_bytes → put_document →
  put_blocks → put_chunks. One transaction per document per design
  §5.8 (kb-store-sqlite's put_* methods own the transactions).
- When provider != "none" and dimensions > 0: build embedder once,
  embed each doc's chunks as Document kind, ensure_table once at the
  top of the run, then upsert the VectorRecord batch. Lexical-only
  config (provider == "none") skips both — verified by
  ingest_provider_none_skips_lance test.
- Per-asset parse failures recorded as IngestItemKind::Error with
  the warning attached; the run continues. Only structural failures
  (DB unreachable etc.) abort.
- Aggregate counts (assets_scanned / new / updated / skipped /
  errors / chunks_indexed / embeddings_indexed / duration_ms) flow
  into both the JobRepo progress_json AND a dedicated ingest_runs
  row written via SqliteStore::record_ingest_run (new
  pub(crate) helper added to kb-store-sqlite — see below).
  summary_only=true writes items_json=NULL but still populates the
  count columns.

search dispatch:
- SearchMode::Lexical → LexicalRetriever directly.
- SearchMode::Vector → VectorRetriever with embedder + LanceVectorStore.
- SearchMode::Hybrid → HybridRetriever composing the two.
- Vector / Hybrid with provider=none returns a clear error naming the
  config key to flip ("models.embedding.provider").

list_docs / inspect_doc / inspect_chunk delegate straight to
DocumentStore trait methods. Returns Err with actionable message on
not-found.

Test seam: each public free function has a matching
#[doc(hidden)] pub fn *_with_config(cfg, ...) companion that
integration tests invoke directly (the public form internally calls
load_config()). pub(crate) would not reach across the integration-
tests crate boundary; #[doc(hidden)] keeps it out of rustdoc and the
function comment flags it as test-only.

kb-store-sqlite additions:
- pub struct IngestRunRow + pub fn record_ingest_run on SqliteStore
  for the kb-app aggregate-counts persistence path. Helper writes
  the ingest_runs row directly with all aggregate columns; jobs
  table still gets a JobRepo create/update_progress/finish trio in
  parallel.

Tests (11 default, 2 #[ignore] AVX-gated):
- ingest_lexical: round-trip, idempotent, summary_only_drops_items,
  provider_none_skips_lance (asserts no .lance dir on disk),
  records_ingest_runs_row_with_aggregate_counts, tags_any filter,
  inspect_doc_not_found, inspect_chunk_not_found.
- search_lexical: lexical hits with embedding_model=None,
  empty_query_returns_empty, vector_mode_with_provider_none returns
  clear error.
- search_vector: hybrid mode end-to-end (#[ignore], AVX), Vector
  mode embedding_model assertion (#[ignore], AVX). Both run on the
  AVX VM in ~21s combined (first run pays the model download).
- TestEnv pins workspace.root + storage.{data_dir,model_dir} to a
  TempDir so tests don't touch the user's $HOME/.local/share.
- Fixture workspace at crates/kb-app/tests/fixtures/workspace/ has
  three small markdown files with varied frontmatter (rust+cargo+
  python tags) so the tags_any filter test exercises a non-trivial
  predicate.

Workspace 269 passed / 24 ignored / 0 failed (was 261/22). cargo
clippy --workspace --all-targets -- -D warnings clean. CLI smoke
verified manually: `cargo run -p kb-cli -- index` returns a real
IngestReport JSON; `cargo run -p kb-cli -- search "..."` returns
hits with citations; `cargo run -p kb-cli -- list docs` lists the
indexed documents.

Allowed deps respected: kb-source-fs, kb-parse-md, kb-parse-types,
kb-normalize, kb-chunk, kb-store-sqlite, kb-search, kb-store-vector,
kb-embed, kb-embed-local plus existing tracing / anyhow / serde /
toml / dirs and now blake3 (run_id) + time. Forbidden (kb-llm*,
kb-rag, kb-tui, kb-desktop, kb-parse-{pdf,image,audio}) absent from
cargo tree -p kb-app.

Out of scope per spec: ask body (P4-3), --rebuild-fts wiring,
--resume checkpointing (P+), --watch (P+), TUI / desktop integration
(P9 consumes this facade).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-01 12:11:21 +00:00
ccd49ef546 feat(p3-4): hybrid-fusion — VectorRetriever + HybridRetriever (RRF)
Composes the existing LexicalRetriever (P2-2) with a new VectorRetriever
wrapper around LanceVectorStore (P3-3) into a single Retriever that
dispatches by SearchMode. For SearchMode::Hybrid, fuses lexical and
vector candidates via Reciprocal Rank Fusion and populates the full
RetrievalDetail per SearchHit so kb search --explain can attribute
scores back to each side.

Public surface (kb-search crate):
- pub struct VectorRetriever — Arc<dyn VectorStore + Send + Sync>,
  Arc<dyn Embedder>, Arc<SqliteStore>, IndexVersion at construction.
- pub struct HybridRetriever { lexical, vector, fusion, k }.
- pub enum FusionPolicy { Rrf { k_rrf: u32 } }.

VectorRetriever:
- Embeds query.text as EmbeddingKind::Query before delegating to
  VectorStore::search(query_vec, query.k * 2, &query.filters). Over-
  fetches by ×2 for filter losses; LanceVectorStore applies the
  filters internally so they propagate naturally.
- Hydrates each VectorHit into a full SearchHit by joining on
  chunk_id in a single IN-clause batch (no N+1): doc_path,
  section_label, chunker_version, source_spans for citation, plus
  embedding_model from embedder.model_id().
- Snippet trimmed to config.search.snippet_chars (vector mode lacks
  FTS5 highlighting; chunk text prefix is the next-best signal).
- Citation built from the chunk's first source span via the shared
  citation_helper module — extracted from lexical.rs so both
  retrievers compute citations identically (Byte/empty fallback to
  Line{1,1} preserved with tracing::warn).
- RetrievalDetail.method = Vector for standalone calls; both
  fusion_score and vector_score set to the LanceVectorStore-shifted
  cosine score; lexical_* None.

HybridRetriever:
- Lexical / Vector modes delegate 1:1 — no rebuild of RetrievalDetail.
- Hybrid mode runs both retrievers with k * 2 fanout, fuses with
  RRF (score(c) = Σ 1/(k_rrf + rank_m(c))), sorts fused-score DESC
  with deterministic tiebreaker (lex_rank ASC then chunk_id ASC),
  takes top query.k. Fusion math runs in f64 throughout; cast to
  f32 only at the SearchHit boundary where bounded magnitude (≤
  ~0.033 at k_rrf=60) makes f32 precision sufficient for ranking.
- Per-hit lexical preferred for snippet/citation/heading_path/
  chunker_version/embedding_model when the chunk appears in both
  retrievers — FTS5 highlighting is more user-relevant than vector's
  truncated text. Vector-only chunks fall through to vector hit data.
- index_version returns format!("hybrid:{}+{}", lex_iv, vec_iv) at
  construction; mismatched lex/vec versions trigger a tracing::warn
  so users notice stale indexes (spec line 143).

kb-search additions:
- citation_helper.rs — pub(crate) citation_from_first_span shared
  between lexical and vector retrievers. Extracted from lexical.rs;
  no behavior drift.

Tests (38 default + 3 ignored):
- 12 unit tests in hybrid.rs covering RRF math (1/61 + 1/62 within
  f32 epsilon × 10 tolerance), lexical/vector mode delegation, hybrid
  preserves single-side hits with the missing side's RetrievalDetail
  None, deterministic tiebreaker on identical fused scores, composite
  index_version, mismatched-version warn at construction.
- 2 unit tests in vector.rs covering the snippet-prefix and citation
  fallback paths.
- 11 unit tests in lexical.rs (unchanged from P2-2).
- 13 lexical integration tests (unchanged).
- 3 #[ignore] AVX-gated hybrid integration tests: disjoint-corpus
  recall (lex returns A,B; vec returns C,D; hybrid returns all 4),
  determinism over two queries, snapshot stability against
  tests/fixtures/search/hybrid/run-1.json. Snapshot fixture was
  regenerated against this branch on an AVX-enabled VM and contains
  4 real chunks (c1/c2 lex+vec, c3/c4 vec-only).
- KB_UPDATE_SNAPSHOTS=1 path now panics after writing instead of
  silently passing — matches the P3-2/P3-3 fail-loud-instead-of-
  silent-pass philosophy.

Allowed deps respected (kb-core, kb-config, kb-store-sqlite,
kb-store-vector, kb-embed, tracing, thiserror) plus pre-existing
kb-search deps from P2-2 (rusqlite, globset, serde_json, anyhow).
kb-embed-local does NOT appear — VectorRetriever takes Arc<dyn Embedder>
trait object; the concrete adapter is runtime-injected by kb-app.

Out of scope: reranker (P+), score calibration across modes (RRF is
rank-comparable so absolute calibration is P+), multimodal retrieval
(P6+).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-01 11:22:21 +00:00
3cd5117a7e feat(p3-3): kb-store-vector — LanceDB VectorStore + V003 embedding status
First VectorStore implementation. Per-model Lance tables under
config.storage.vector_dir, two-phase upsert (SQLite-pending → Lance
MergeInsert → SQLite-committed) with crash-safe retry, search via
cosine distance with the spec's score-shift (preserves negative
similarity ranking signal that clamping would crush).

V003 migration:
- Adds status (CHECK constraint pending|committed|tombstone, default
  pending) and vector_committed columns to embedding_records.
- BEFORE DELETE trigger on chunks flips dependent rows to tombstone.
  Currently overshadowed by V001's ON DELETE CASCADE FK; trigger UPDATE
  runs first then row vanishes via CASCADE. Spec-faithful tombstone
  preservation requires recreating embedding_records to drop the
  CASCADE — deferred to a P+ migration since no production rows exist
  yet (P3-3 is the first writer). V003 SQL comment explains.

LanceVectorStore:
- ensure_table is idempotent: opens existing or creates with the
  Arrow schema (chunk_id, doc_id, embedding FixedSizeList<Float32,
  dim>, model_id, embedding_version, text, heading_path, created_at).
- IndexId computed via id_for_index with collection="chunk_embeddings",
  index_kind="flat", params_hash = blake3(descriptor JSON). Schema
  bumps automatically rotate the IndexId.
- upsert: phase-1 INSERT OR REPLACE INTO embedding_records (status=
  'pending') in a single SQLite tx; phase-2 Lance MergeInsert keyed
  on chunk_id (idempotent re-run); phase-3 UPDATE status='committed',
  vector_committed=1. If phase-2 fails the rows stay 'pending' and
  the next upsert call retries idempotently.
- search joins embedding_records WHERE status='committed' so partial-
  write rows never surface. Cosine distance from Lance ∈ [0, 2] →
  similarity = 1 - distance ∈ [-1, 1] → score = (similarity + 1)/2 ∈
  [0, 1]. NaN coerced to 0 with tracing::warn. Filter by SearchFilters
  via SqliteStore::filter_chunks (added in this commit).
- Sync trait + async LanceDB bridged by an embedded current-thread
  tokio runtime. Doc-comment on the struct flags the "do NOT call
  from inside another tokio runtime" panic (block_on cannot nest).
  kb-app's job scheduler is sync today.

kb-store-sqlite additions:
- pub fn put_embedding_records_pending(&[EmbeddingRecordRow]) — phase-1
  INSERT OR REPLACE (status='pending', vector_committed=0).
- pub fn mark_embedding_records_committed(&[EmbeddingId]) — phase-3
  single UPDATE … WHERE embedding_id IN (?, ?, …) via
  params_from_iter, guarded by WHERE status='pending' so tombstones
  don't get clobbered.
- pub fn filter_chunks(&[ChunkId], &SearchFilters) → Vec<ChunkId>
  consolidates the JOIN against documents/document_tags/
  embedding_records + path_glob via globset. Lets kb-store-vector
  honor SearchFilters without depending on rusqlite or globset
  directly. (kb-search's filter logic is structurally different —
  interleaved with the FTS5 SELECT — so it stays as-is for now;
  consolidation is a P+ refactor.)
- 4 new unit tests cover the phase-1 round-trip, empty batch,
  replay reset of pending rows, and the WHERE-status-pending guard.

Tests:
- 9 lib unit tests in kb-store-vector covering paths/sanitization,
  arrow_batch dim validation + descriptor hash, bm25-style cosine
  score shift math.
- 4 new kb-store-sqlite unit tests on filter_chunks (committed-only,
  tags/lang/trust/path_glob, order preservation, empty input).
- 4 new kb-store-sqlite unit tests on the embedding_records helpers.
- 8 integration tests in upsert_search.rs and 1 snapshot test marked
  #[ignore = "requires AVX-capable hardware (LanceDB)"]. They invoke
  require_avx_or_panic() at the top of each body so a missing-AVX
  --ignored run fails loudly instead of silently passing. This dev
  host (qemu64 model) lacks AVX so these were NOT exercised end-to-
  end here — first CI lane on AVX hardware will validate them.
- Snapshot fixture tests/fixtures/vector/run-1.json is a placeholder
  with an _comment marker. Snapshot test panics until the placeholder
  is replaced via KB_UPDATE_SNAPSHOTS=1 on AVX hardware.
- Workspace 241 passed, 19 ignored, 0 failed; cargo clippy --workspace
  --all-targets -- -D warnings clean.

Allowed deps respected (kb-core, kb-config, kb-store-sqlite, lancedb,
arrow + arrow-array + arrow-schema, serde, serde_json, tracing,
thiserror) plus forced waivers — anyhow (trait return type), tokio
+ futures (LanceDB async-only API), blake3 (params_hash). rusqlite
and globset are NOT direct deps of kb-store-vector — confirmed via
cargo metadata --no-deps. rusqlite stays in [dev-dependencies] for
the test fixture seeder only.

Out of scope: IVF/PQ index tuning (P+), image vectors (P6), kb-app
embed_index orchestration (P3-4 facade).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-01 10:01:31 +00:00
bcbe2b8531 feat(p3-2): kb-embed-local crate — fastembed adapter for multilingual-e5-small
First real Embedder implementation. Wraps fastembed-rs (ONNX runtime)
with the e5 prefix convention, batching, and {data_dir}/${XDG_DATA_HOME}
template expansion so model files land under config.storage.model_dir/
fastembed/ without polluting kb-config's public API.

Public surface:
- pub struct FastembedEmbedder
- pub fn new(config: &Config) -> Result<Self>
- impl kb_core::Embedder (via kb-embed re-export)

Behavior:
- Default model multilingual-e5-small (384 dims). model_id and
  model_version come from config.models.embedding.{model,version}.
- Pre-load dim check via TextEmbedding::get_model_info: dim mismatch
  bails before paying the ~470MB ONNX init cost.
- e5 prefix applied BEFORE tokenization: "passage: " for
  EmbeddingKind::Document, "query: " for EmbeddingKind::Query. Pinned
  by prefix_input unit tests.
- Batches inputs into chunks of config.models.embedding.batch_size,
  concatenates results in input order.
- L2 normalization is performed by fastembed 4.9's default transformer
  pipeline (verified at fastembed/src/text_embedding/output.rs:43);
  we skip re-normalization. Integration test pins ‖v‖ ≈ 1.0 ± 1e-3 so
  a future fastembed bump that drops this invariant fails loudly.
- Synchronous (no async runtime). Mutex serializes calls into the
  underlying ONNX session — conservative; ORT Session is Send+Sync but
  callers (kb-app indexer) batch sequentially anyway. Revisit if
  profiling shows contention.
- First-run model download surfaces via tracing::info before/after
  TextEmbedding::try_new — users no longer stare at a silent 30-60s
  pause during the 470MB pull.

Tests:
- 11 default-lane tests covering: check_dim match/mismatch (no model
  load), prefix_input Document/Query/empty, resolve_model
  known/unknown, expand_path substitution + no-op + XDG_DATA_HOME set
  + XDG_DATA_HOME unset (falls back to ~/.local/share with recursive
  ~ expansion). XDG tests serialize on a Mutex + RAII guard since
  edition 2024 makes set_var/remove_var unsafe.
- 7 #[ignore] integration tests covering: full construction with
  default config, dim-mismatch belt-and-braces, Document vs Query
  cosine differential, L2 unit norm, byte-equal determinism, batch-64
  performance under 5s, snapshot-hash stability over a 5-sentence
  multilingual fixture.
- Snapshot test fails LOUDLY when SNAPSHOT_HASH_BASELINE is 0 — prints
  the captured hash and panics with paste-back instructions, so first
  --ignored run forces the maintainer to pin the baseline rather than
  silently passing.
- Workspace: 222 tests pass (default lane); clippy clean.

Allowed deps respected: kb-config, kb-embed (re-exports kb-core
trait surface), fastembed = "4.9", tracing, anyhow. tokenizers and
ort enter transitively through fastembed; reqwest/hyper/hf-hub also
transitive (model download is fastembed's responsibility per spec
carve-out). No direct kb-core dep needed — re-exports cover it.

Pinned to fastembed 4.x rather than the recent 5.x to limit blast
radius; consider bump when p3-3 (lancedb-store) consumes the embedder
output shape.

Out of scope: reranker (P+), Ollama embedding endpoint, candle
adapter, image embeddings (P6).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-01 08:39:38 +00:00
2e3eb8f437 feat(p3-1): kb-embed crate — Embedder trait re-export + MockEmbedder
Establishes the kb-embed trait crate so concrete embedding adapters
(p3-2 fastembed, future ollama-embed/candle) target a stable surface.
Pure re-export of kb_core::{Embedder, EmbeddingInput, EmbeddingKind,
EmbeddingModelId, EmbeddingVersion} plus a feature-gated deterministic
mock for downstream tests.

MockEmbedder (cfg(feature = "mock"), default OFF):
- Per-component hash recipe: blake3(seed_le8 || kind_byte ||
  text_len_le8 || text || i_le8). Length-prefixed text avoids the
  domain-separation ambiguity where two (text, i) pairs could shift
  bytes between text tail and the i field.
- Document = 0u8, Query = 1u8 — same text different kind yields
  different vectors (mirrors e5 prefix behaviour).
- Per component: blake3 first 8 bytes → u64 → reinterpret as i64 →
  f64/i64::MAX → f32. i64::MIN gives -1.0000000000000002 which f32
  rounds to -1.0; range [-1, 1] holds.
- L2 unit-normalised. Norm sums in f64 (avoid catastrophic precision
  loss) before f32 cast. Zero-norm guard skips the divide.
- with_seed(...) constructor lets two embedders share identity but
  produce different vectors — useful for downstream parametric tests.

Helpers:
- assert_vector_shape(vecs, dims) — len + finite check.
- assert_unit_norm(vecs, tolerance) — caller-supplied tolerance;
  5e-4 documented as safe for dims=384 under f32 epsilon × √dims.

Tests:
- cargo test -p kb-embed (no features): 2 reexport/dyn-dispatch tests.
- cargo test -p kb-embed --features mock: 7 tests including 100-case
  proptest asserting len == dims, all finite, ‖v‖ ≈ 1.0 within
  tolerance, Doc(text) byte-equal Doc(text), Doc(text) ≠ Query(text),
  Doc(text1) ≠ Doc(text2).
- All 220 workspace tests pass; clippy clean for both default and
  mock-on feature configurations.

Symbol gating: nm on the release rlib confirms zero MockEmbedder
symbols under default features; three trait impl symbols under
--features mock. Spec invariant "release builds MUST NOT include
MockEmbedder" verified at the symbol level.

Allowed deps respected: kb-core, kb-config, serde, thiserror, tracing,
plus anyhow (forced by trait return type) and blake3 (justified by
the determinism contract; already in workspace lockfile via kb-core).
No fastembed/ort/tokenizers anywhere.

Out of scope: real adapter (p3-2), reranker traits (P+).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-01 08:15:44 +00:00
b335151d18 feat(p2-2): kb-search crate + LexicalRetriever (FTS5 + bm25)
Adds the first concrete kb_core::Retriever, exercising chunks_fts (P2-1)
to answer SearchMode::Lexical queries. Returns Vec<SearchHit> with
bm25-derived ranking, snippet() previews, and W3C-fragment-style
Citation built from the chunk's first source_spans entry.

New crate kb-search:
- LexicalRetriever::new(Arc<SqliteStore>, IndexVersion).
- search() builds an FTS5 MATCH expression by escaping every whitespace
  token into a quoted literal (inner " doubled); single-quote-wrapped
  text passes through verbatim as raw FTS5 syntax. Empty query
  short-circuits to Ok(vec![]).
- bm25 normalization: score = -bm25 / (1 + |bm25|), bounded (0, 1] for
  any FTS5-returned negative bm25.
- Snippet via snippet(chunks_fts, 3, '', '', '…', word_budget) where
  word_budget = snippet_chars / 4 clamped to [1, 64]; trim_snippet
  enforces the char cap on the way out (chars per design §6.4 — accepts
  the combining-mark trade-off).
- Citation from chunks.source_spans_json first span: Line / Page /
  Region / Time forwarded; Byte / empty array fall back to Line{1,1}
  with a tracing::warn so forward-compat regressions surface.
- Filters: tags_any (subquery on document_tags), lang (= column),
  trust_min (CASE-rank in SQL) all applied at SQL level. path_glob
  uses globset with literal_separator(true) — guarantees '*' does not
  cross '/' per spec Risks/notes — applied as Rust post-filter with
  +128 row over-fetch when set, then rank reassigned 1..k contiguously.
- Determinism: ORDER BY score, f.chunk_id (lexicographic blake3 hex
  tiebreaker on identical bm25). Tested explicitly with two chunks of
  identical text content.
- RetrievalDetail: method=Lexical, both lexical_score and fusion_score
  set, vector_* None.

kb-store-sqlite:
- Adds pub fn read_conn(&self) -> MutexGuard<'_, Connection>.
  Read-only contract is doc-only — kb-search needs MutexGuard for
  prepare_cached + iter, which a closure-scoped wrapper would awkwardly
  constrain. Closure variant left as a P3 follow-up.

Tests (26 new): empty corpus, empty query, single hit + citation
round-trip, snippet length cap, tags_any exclusion, lang+trust
composition, path_glob with '*' not crossing '/', citation line round-
trip, bm25 top-1 ∈ (0, 1], determinism (varied scores AND identical-
score tiebreaker), index_version passthrough, snapshot
(crates/kb-search/tests/fixtures/search/lexical/run-1.json — stable
under bundled SQLite; KB_UPDATE_SNAPSHOTS=1 to regenerate). Workspace:
211 tests pass, cargo clippy --workspace --all-targets -D warnings
clean.

Allowed deps respected: kb-core, kb-config, kb-store-sqlite, rusqlite,
tracing, thiserror, anyhow (forced by trait return type), serde_json
(parses *_json TEXT columns), globset (path_glob '*' boundary).

Out of scope (deferred): vector retriever (p3-3), hybrid fusion (p3-4),
reranker (P+), Korean morphological tokenizer (P+).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-01 05:20:35 +00:00
111f40ddf0 p1-6: kb-store-sqlite test suite (8 categories)
All 8 test categories from the task plan, plus a JobRepo subset:

  migration   — tests/migration.rs: fresh DB after run_migrations
                exposes every required §5 table + index.
  unit (copy) — tests/asset_writer.rs: copy mode writes file with
                mode 0o644 + correct bytes.
  unit (ref)  — tests/asset_writer.rs: reference mode does not write
                file; row records source path.
  unit (cs)   — tests/asset_writer.rs: tampered checksum returns a
                Conflict-flavoured anyhow error.
  unit (idem) — tests/idempotency.rs: same put_document twice → 1 row,
                doc_version 1→2; tags re-derived.
  unit (rb)   — tests/idempotency.rs: put_blocks with FK violation
                rolls back; pre-existing rows unchanged.
  contract    — tests/contract_roundtrip.rs: drives kb-parse-md +
                kb-normalize + kb-chunk on
                fixtures/markdown/code-and-table.md, persists, then
                reloads via DocumentStore::get_document /
                get_chunk and asserts byte-equal round-trip.
  snapshot    — tests/ingest_report_snapshot.rs +
                snapshots/ingest_report.snapshot.json: pin the wire
                JSON form of kb_core::IngestReport for an inline
                fixture run.
  jobs        — tests/jobs.rs: create → progress → finish flow;
                error message round-trip; list filters on status/kind.

Drops the unused `serde` direct dep from Cargo.toml; serde_json brings
its own. Dev-deps confirmed via `cargo tree -p kb-store-sqlite --depth 1`
to live only in the dev tree.
2026-04-30 17:13:03 +00:00
a3390d5171 p1-6: scaffold kb-store-sqlite crate + V001 full §5 DDL
New workspace member crate `kb-store-sqlite` (allowed deps only:
kb-core, kb-config, rusqlite[bundled], refinery, serde, serde_json,
time, blake3, tracing, anyhow, thiserror; dev-deps add kb-parse-md /
kb-normalize / kb-chunk for the contract round-trip test).

Migration V001 replaces the P0-1 stub with the full §5 DDL (assets,
documents, document_tags, blocks, chunks with policy_hash,
embedding_records, jobs, ingest_runs, answers, eval_runs,
eval_query_results) plus the §5 indexes. FTS5 virtual table + triggers
remain deferred to V002 (P2-1).

Public surface per task spec:
  SqliteStore::open / run_migrations / put_asset_with_bytes
  impl DocumentStore for SqliteStore (7 trait methods)
  impl JobRepo for SqliteStore (4 trait methods)
  StoreError { Sqlx, Migration, Conflict }

Behavior:
- Pragmas at open: foreign_keys=ON, journal_mode=WAL,
  synchronous=NORMAL, temp_store=MEMORY.
- Asset writer: byte_len ≤ copy_threshold_mb * 1MiB → copy to
  data_dir/assets/<aa>/<asset_id> (mode 0o644 on Unix), else
  reference. blake3(bytes) verified against asset.checksum; mismatch →
  Conflict.
- Idempotency: put_document UPSERTs and bumps doc_version + 1 on
  conflict; put_blocks / put_chunks DELETE-then-INSERT; document_tags
  re-derived per put_document.
- get_document rehydrates blocks via payload_json ordered by stream
  ordinal.
- list_documents builds dynamic WHERE from DocFilter (lang / trust_min
  / path_glob via GLOB / tags_any via document_tags subquery).
- JobRepo: jobs.kind/status are stored as lowercase enum tags; create
  mints a 32-hex JobId via blake3(kind || payload || nanos).

Tests follow in subsequent commits.
2026-04-30 17:08:36 +00:00
58f7b8573d p1-5: add long-section fixture + Vec<Chunk> snapshot test
Bakes the chunker output for fixtures/markdown/long-section.md (3 H1s,
nested H2 under Alpha, a 50-line code block, a 3-col x 4-row table,
and a multi-paragraph Gamma section) into the JSON snapshot baseline.
Confirms the priority rules end-to-end:

  - Heading boundaries hold across H1 → H2 → H1 transitions
  - The code block emits one chunk at 427 tokens > target=200
  - The table stays single-chunk
  - Gamma's paragraph stream splits with one block of overlap seed

A second test runs the full parse → normalize → chunk pipeline 5
times and asserts identical chunk_ids each pass.

Drops the unused `kb-config` and `serde` from regular dependencies —
they were declared but no source path imports them; `serde` flows in
transitively via `kb-core` as a public API requirement, and
`ChunkingCfg` lives in `kb-config` but the chunker takes
`ChunkPolicy` directly. Production deps are now exactly the allowed
set actually used: anyhow, blake3, kb-core, serde_json_canonicalizer,
tracing.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-04-30 16:33:29 +00:00
8142449eb7 p1-5: scaffold kb-chunk crate with MdHeadingV1Chunker skeleton
Adds the new workspace member with the bare Chunker impl shape:
chunker_version() returns "md-heading-v1"; policy_hash() blake3-hashes
canonical JSON of ChunkPolicy and truncates to 16 hex chars; chunk()
is an empty stub the next commits fill in.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-04-30 16:27:42 +00:00
e0df42984e p1-4: address review I1-I3 + minors (extract attribution, audio-ref skip, NFC heading_path)
I1: warning_agent maps ExtractFailed → "kb-parse-md" (the panic-recovery
emitter in kb-parse-md/src/blocks.rs). Lift-stage warnings from
build_canonical_document are tracked separately and attributed to
"kb-normalize", so the I1 mapping change does not lie about
kb-normalize-originated drops.

I2: ParsedPayload::AudioRef no longer synthesizes Block::AudioRef with
an invalid empty AssetId (would violate AssetId::from_str's 32-hex
invariant). Block is dropped, Warning surfaces in Provenance with src
mention, attributed to kb-normalize (lift-stage decision). TODO(P8)
comment marks this as a placeholder until the audio extractor lands.

I3: NFC-normalize each heading_path string in lift_block before feeding
into id_for_block AND into CommonBlock.heading_path. pulldown-cmark does
not NFC heading text and serde_json_canonicalizer v0.3 does not either,
so canonically-equivalent NFD/NFC inputs would produce different
block_ids without this normalization. Mirrors the existing doc_id NFC
handling via to_posix.

Minors:
- M4: trim Cargo.toml — drop kb-config, serde_json_canonicalizer,
  blake3 (unused); keep tracing (now wired) + unicode-normalization
  (now used by I3).
- M5: determinism_1000_iterations_under_1s now uses the same 5-block
  fixture as block_ordinals_scoped_per_heading_and_kind (extracted into
  fixture_blocks_five helper) so the determinism property is exercised
  on a real lift_block path, not just an empty Vec. Still < 1s.
- M6: snapshot integration test now passes BodyHints { first_h1:
  Some("Code And Table"), .. } and asserts doc.title == "Code And Table"
  end-to-end. Baseline JSON updated.
- M7: title/lang edge-case unit tests pin policy: empty string lifts to
  empty string; non-stringy values silently drop. Rustdoc updated.
- M10: provenance_contains_stage_events_in_order asserts events[1].at
  == events[2].at to pin the shared-now_utc invariant.

New tests (unit, kb-normalize):
- provenance_with_extract_failed_warning_attributes_to_kb_parse_md (I1)
- audio_ref_block_skipped_with_warning (I2)
- nfc_nfd_korean_heading_path_same_block_id (I3)
- title_empty_string_in_user_map_falls_back_to_default (M7)
- title_non_string_in_user_map_silently_drops (M7)
- lang_invalid_shape_silently_drops (M7)

kb-normalize unit tests: 9 → 14. Integration snapshot: 1 (unchanged).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-04-30 15:41:50 +00:00
c0096ce44b p1-4: scaffold kb-normalize crate
Add the workspace member, `Cargo.toml` with the §8-allowed dep set
(kb-core, kb-parse-types, kb-config, serde, serde_json_canonicalizer,
blake3, unicode-normalization, time, anyhow, tracing) and a stubbed
`build_canonical_document` that pins the public signature plus
`doc_id` derivation. `kb-parse-md` is permitted only as a *dev*-dep so
the integration snapshot test (added later in this series) can drive
a fixture through the real parser without violating the production
boundary — `cargo tree -p kb-normalize --depth 1 --edges normal`
confirms no parser implementation appears in the regular dep tree.

`id_for_doc` and `id_for_block` are re-exported from kb-core (which
holds the canonical recipe per §4.2); kb-normalize is the canonical
*entry point* per design §8.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-04-30 15:16:53 +00:00
4e7e9cad87 p1-3: add parse_blocks (pulldown-cmark walker) submodule
Implements `kb_parse_md::parse_blocks(body, body_offset_lines)` returning a
flat `Vec<ParsedBlock>` plus warnings. Walks pulldown-cmark events through a
small frame-based state machine that tracks heading paths, accumulates
inline buffers (Text/Code/Link/Strong/Emph only — design §3.4), and
reports SourceSpan::Line spans in 1-indexed file-line coordinates.

Covers headings, paragraphs, code blocks (lang from info string), GFM
tables (with malformed fallback to paragraph + MalformedTable warning),
lists (nested sub-lists flattened into parent item), and block-level image
references. Inline images are dropped silently per the inline filter.
Adversarial inputs are caught with `catch_unwind` and degrade to an empty
output + ExtractFailed warning.

15 unit tests cover heading-path correctness, code lang, table parsing,
malformed-table fallback (driven via synthetic events since pulldown-cmark
auto-normalizes table widths), LF/CRLF line-range parity, image refs,
nested-list flattening, inline filter, and 100-iteration random-bytes plus
hand-crafted adversarial-input no-panic guards.
2026-04-30 14:14:34 +00:00
a86b463fc4 p1-2: scaffold kb-parse-md crate
Add the workspace member with the dep allow-list pinned by design §0 Q9
and the task spec. P1-2 will land the frontmatter submodule in the next
commit; P1-3 will add the block parser as a sibling.

Notable choice: serde_yaml (dtolnay) was archived as unmaintained in 2024
so we use serde_yaml_ng, the maintained fork. lingua's per-language
features are explicitly enabled (default-features=false) to keep build
time + binary size sane — only the languages we need at parse time.
2026-04-30 12:55:20 +00:00
7c75e10b2c p1-1: scaffold kb-source-fs crate (FsSourceConnector)
Walk config.workspace.root, apply gitignore-style filters
(config.workspace.exclude ∪ .kbignore ∪ baked-in defaults for
.DS_Store / ._*), stream BLAKE3 over each file, and emit a
deterministic Vec<RawAsset> sorted by workspace_path.

Modules:
  - hash:      streaming blake3::Hasher + 64 KiB read buffer (no whole-file
               loads); pinned digests for empty input and "hello world".
  - media:     extension → MediaType (markdown/pdf/image/audio/other).
  - walker:    ignore::OverrideBuilder for filter union; walkdir with
               manual visited-set cycle protection on top of follow_links.
  - connector: public FsSourceConnector::new(&Config) +
               SourceConnector::scan(&SourceScope) impl. Uses
               kb_core::to_posix for WorkspacePath construction (carries
               P0-1 # rejection through unchanged) and kb_core::id_for_asset
               for AssetId derivation. Storage variant signals intent only;
               actual byte copy is P1-6's responsibility.

Per design §3.3, §6.2, §6.6, §7.1, §7.2, §8.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-04-30 12:27:34 +00:00
d2c8728095 p0-1: address review (drop unused thiserror dep, document kb-core reserve)
- Cargo.toml: remove `thiserror` from kb-config, kb-parse-types, kb-app
  (unused — none of those crates' src trees reference thiserror; CoreError
  in kb-core is the only consumer).
- kb-config keeps the `kb-core` dep with a one-line comment marking
  CoreError reserved for P1-* config-error wiring per the review thread.
- ids.rs: switch `validate_hex32` from a hand-rolled `matches!` byte range
  to `is_ascii_hexdigit()` so the hex check is the canonical idiom (and
  satisfies `clippy::manual_is_ascii_check` under `-D warnings`).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-04-30 08:55:39 +00:00
f86df99fe9 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>
2026-04-30 05:16:37 +00:00