V007 trigram tokenizer 의 substring 매칭을 검증하던 3 test 는 V009
unicode61 으로 의도된 회귀 (spec §3 Non-Goals Path A) 가 발생하므로
obsolete:
- fts_trigram_korean_3char_substring_hits: '발생한' → '발생한다' hit
은 trigram 의 substring 매칭이라 V009 의 whole-token 매칭에서 fail.
- fts_trigram_korean_short_query_zero_hit_pinned: 2-char Korean
query 의 0-hit 동작은 V009 의 형태소 column 으로 해소되므로 이 핀
자체가 obsolete (S7 이 신규 2-char hit test 로 대체).
- fts_trigram_english_substring_hits: 'token' → 'tokenizer' hit 은
V009 unicode61 의 whole-token only 에서 fail.
신규 추가:
- fts_v009_unicode61_space_separated_korean_token_hits: V009 unicode61
의 whole-token 매칭 sanity (token '충돌은' hit, substring '발생한'
0-hit). S7 이 추가할 morphological 검증 test 와 별개의 baseline.
S7 (plan §2 Step 7) 가 v009_korean_morphological_2char_query_hits +
v009_english_whole_token_only 를 추가하여 회귀 + 신규 동작 모두 핀할
예정.
Spec: docs/superpowers/specs/2026-05-28-v0.20.x-korean-morphological-tokenizer-spec.md §3, §9.2
Plan: docs/superpowers/plans/2026-05-28-v0.20.x-korean-morphological-tokenizer-plan.md (S3 follow-up)
S3 spec compliance reviewer (sonnet) 가 2 blocker 발견:
1. crates/kebab-store-sqlite/src/documents.rs: get_chunk SELECT 가
tokenized_korean_text column 을 미조회 → DB 의 값이 read 시 유실.
SELECT column list + row → Chunk 변환 시 row.get 인덱스 추가.
ChunkRow struct + chunk_row_from_sql + get_chunk Chunk 생성 cascade.
2. crates/kebab-chunk/src/code_*_ast_v1.rs (9 file): make_chunk 가
tokenized_korean_text: None 하드코딩 → 한국어 주석을 가진 코드
파일이 FTS hit 안 됨. tier2_shared 와 동일 패턴으로
tokenize_korean_morphological(text) 호출 cascade.
이 commit 은 S3 의 rework — amend 아닌 별 commit (S3 boundary
유지). spec §6.2 invariant ("모든 chunker 가 chunk emit 직전에
tokenize 호출") 충족.
Spec: docs/superpowers/specs/2026-05-28-v0.20.x-korean-morphological-tokenizer-spec.md §6.2
Plan: docs/superpowers/plans/2026-05-28-v0.20.x-korean-morphological-tokenizer-plan.md (S3 rework)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
V009 의 tokenized_korean_text column 에 들어갈 morpheme sequence
를 lindera ko-dic 으로 분해. chunk builder pipeline 의 chunk 생성
직후 시점에서 호출 → chunk struct 의 field 에 pre-fill → store
의 put_chunks 가 단일 transaction 안에서 INSERT.
- crates/kebab-core/src/chunk.rs: Chunk struct 에
tokenized_korean_text: Option<String> field 추가 (#[serde(default)]).
- crates/kebab-chunk/src/lib.rs: tokenize_korean_morphological()
helper + OnceLock 캐싱 + fallback (None) 정책.
- crates/kebab-chunk/Cargo.toml: lindera features = ["embed-ko-dic"]
추가 (DictionaryKind::KoDic 활성화에 필요).
- 모든 chunker (tier2_shared, md_heading_v1, pdf_page_v1, 9개
code AST v1): Chunk 리터럴에 tokenized_korean_text pre-fill.
- crates/kebab-store-sqlite/src/documents.rs::put_chunks: INSERT
SQL column list + placeholder + binding 갱신 (12번째 column).
- crates/kebab-chunk/tests/tokenize_korean.rs: 단위 테스트 2개.
lindera 3.0.7 API 정정: load_dictionary_from_kind →
load_embedded_dictionary, Token.text → Token.surface.
Spec: docs/superpowers/specs/2026-05-28-v0.20.x-korean-morphological-tokenizer-spec.md §6.2
Plan: docs/superpowers/plans/2026-05-28-v0.20.x-korean-morphological-tokenizer-plan.md (S3)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
V007 trigram tokenizer 의 한국어 2자 query 0-hit 한계 (Bug #8) 해소를
위한 V009 migration 추가. unicode61 tokenizer 로 환원 + 한국어 형태소
분해 결과를 별 column `tokenized_korean_text` 에 pre-fill 하는 방식.
- migrations/V009__fts_korean_morphological.sql 신규: column ADD,
chunks_fts DROP+재정의, 3 trigger CASE expression, backfill INSERT,
corpus_revision bump.
- design §5.5 갱신: trigram → unicode61 + 형태소 column. CASE
expression trigger 본문.
- crates/kebab-store-sqlite/tests/fts.rs: V007 verbatim test 를
V009 source-of-truth 로 rename. v009_bumps_corpus_revision unit
test 추가.
- store.rs: clippy bool_to_int_with_if + cast_lossless 기존 경고 수정
(pdf_ocr_events 관련 코드, S1 작업 중 발견).
영어 substring 매칭은 V002 (whole-token only) 로 회귀 — spec §3
Non-Goals + 후속 release notes (v0.20.1) 에서 정직히 기술.
Spec: docs/superpowers/specs/2026-05-28-v0.20.x-korean-morphological-tokenizer-spec.md
Plan: docs/superpowers/plans/2026-05-28-v0.20.x-korean-morphological-tokenizer-plan.md (S1)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
LoggingCfg gains two fields with serde defaults: keep_recent_runs
(default 100, top-N file retention) and retention_days (default 30,
time-based retention for both ndjson files and the SQLite mirror).
IngestLogWriter::open now runs cleanup_old_logs before creating a new
ingest-*.ndjson — delete iff (idx >= keep_recent) OR (modified <=
cutoff). ingest_with_config_opts also calls
SqliteStore::prune_pdf_ocr_events(retention_days) at ingest start so
the SQLite mirror tracks the same retention window.
Backward compat (AC-9): both new fields use #[serde(default = ...)],
so a pre-v0.20.x config with only [logging] ingest_log_enabled +
ingest_log_dir parses unchanged. kebab init writes the new defaults
automatically via Config::default() -> toml::to_string_pretty (AC-12).
docs/SMOKE.md config example synced.
Closure r1 F5: explicit OR-on-stale comment inside cleanup_old_logs.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Two new wire schemas land as additive minor: ocr_stats.v1 (corpus-wide
aggregate — total_events, success_rate, p50/p90/p99/max_ms, by_engine,
top-10 by_doc by failure count) and ocr_failures.v1 (per-doc or
corpus-wide recent failures, with --doc-id + --limit). Both ship via
new CLI subcommands `kebab inspect ocr-stats` / `inspect ocr-failures`.
App gains four facade methods: inspect_ocr_stats /
inspect_ocr_failures plus their *_with_config companions — required by
CLAUDE.md "the facade rule" so `--config <path>` is honored. The CLI
dispatch arms thread cfg explicitly into the _with_config form.
Runtime introspection emit (WIRE_SCHEMAS in schema.rs) gains two
entries; the meta JSON Schema (schema.schema.json) is untouched
because its wire.schemas is pattern-based, not enum-based.
ingest_log::percentiles extended to (p50, p90, p99, max). p99 surfaces
only via inspect ocr-stats; IngestSummary (round 1) stays 3-percentile.
SKILL.md synced with the two new schemas (AC-13).
Closure r2 G2 (facade *_with_config pair) + G3 (runtime emit, not
meta schema file) + closure r1 F4 (p99) resolved.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Pre-capture canonical.doc_id and Arc<SqliteStore> before the OCR
emit_progress closure so both the ndjson file and the SQLite mirror
carry the same doc_id for every event. File write is durable
(errors propagate); SQLite insert is non-critical (tracing::warn on
failure, ingest does not abort) per spec R-1.
LogEvent::Ocr gains a doc_id: Option<&str> field as an additive
Serde change — round 1 ndjson logs deserialize with doc_id=None.
Closure r1 F1: doc_id NULL in dual-write resolved via
let doc_id_for_log = canonical.doc_id.0.clone() pre-capture.
Closure r2 G1: Arc::clone(&app.sqlite) reused instead of opening a
second SqliteStore — eliminates double-open lock contention and
duplicate migration runs.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Add migrations/V008__pdf_ocr_events.sql with the events table + 3
indices (doc_id, run_id, ts). SqliteStore gains two pub fn:
record_pdf_ocr_event (insert one OCR sample) and prune_pdf_ocr_events
(delete rows older than retention_days; returns the affected row
count). Both follow the existing Mutex<Connection> lock pattern.
Wiring into ingest path lands in the next commit.
Closure r1 F2: explicit lock acquisition in both methods.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Add extract_image_dimensions(bytes) helper using image::ImageReader
and fill the 2 PdfOcrProgress::Finished emit points in pdf_ocr_apply.rs
where page_image_bytes is in scope (OCR error path + success path).
The no-DCTDecode skip path leaves None as page_image_bytes is absent.
Result: LogEvent::Ocr carries non-null image_width/image_height on
successful raster decode, enabling future size-conditioned timeout tuning.
Closure r1 F3: kebab-app/Cargo.toml image features += "jpeg" added as
direct [dependencies] entry (not relying on feature unification via
kebab-parse-image).
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
crates/kebab-app/tests/ingest_log_smoke.rs 신규:
* ingest_log_smoke (AC-9): tempdir + 1 md + 1 scanned PDF →
ingest → assert log file exists + 각 line valid JSON +
각 kind ∈ {ocr,parse_error,skip,error,summary} + last
line kind=summary + scanned>0.
* ingest_log_disabled_emits_no_file (AC-6): enabled=false 일
때 log_dir 안 ingest-*.ndjson 파일 0개 verify.
fixture: ../kebab-parse-pdf/tests/fixtures/scanned_page1.pdf
재사용 (OCR disabled — Ollama 없이 smoke 실행).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
v0.20.x ingest log surface 의 config side. LoggingCfg struct 신설:
* ingest_log_enabled (bool, default true)
* ingest_log_dir (PathBuf, default "{state_dir}/logs")
#[serde(default)] tag 로 pre-v0.20 config 가 [logging] section 부재
시 LoggingCfg::default() 자동 init (AC-10 backward compat).
{state_dir} placeholder 의 실제 expand 는 step 2 (IngestLogWriter)
의 expand_log_dir helper 가 담당 (kebab-config 의 expand_path_with_base
는 {state_dir} 미지원, spec §6 R-3).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Round 3 final dogfood (2026-05-28) 에서 60s default 가 dense Korean page
(metro-korea.pdf page 8/9/13) 의 OCR 을 강제 timeout — round 2 대비 1 page
더 indexed 손실. user perspective: cost vs coverage trade-off 가 60s 에선
coverage 쪽으로 너무 깎임.
Sweet spot 점진적 축소 정책 채택 — conservative starting point 180s 부터
dogfood evidence (OCR 평균 ms 분포) 기반 점진적 축소. 60s 같은 짧은 default
로 직접 jump 안 함.
- crates/kebab-config/src/lib.rs::default_pdf_ocr_request_timeout_secs() = 180
- unit test rename (_is_60s → _is_180s) + assertion 180
- crates/kebab-config/tests/pdf_ocr.rs assert_eq 180
- tasks/HOTFIXES.md 2026-05-28 follow-up entry 추가
User override path 보존 — config.toml [pdf.ocr] request_timeout_secs = N
로 user 가 직접 tune.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
schema_report_reflects_freshly_ingested_kb 가 `!streaming_ask` 를 assert 했으나
Bug #9 fix (760eee8) 로 streaming_ask 가 true 로 정정됨. assertion 을 반전.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Step 4 의 Models struct 확장 (active_parsers / active_chunkers 추가) 이
crates/kebab-cli/src/wire.rs 의 테스트 fixture 초기화를 누락 → E0063 컴파일 에러.
#[serde(default)] 는 serde 역직렬화 전용 — struct literal 초기화 에는 모든 field 필요.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
이전: `kebab search "" --json` / `kebab search " " --json` / `kebab ask "" --json`
모두 exit=0 + silent 0 hit (search) 또는 LLM 빈 prompt round-trip (ask). user
mistake (typo, shell expansion 실수) 가 silent → debugging 비용.
이후: 양쪽 arm 에서 `query.trim().is_empty()` → kebab_app::StructuredError
(ErrorV1, code=invalid_input, hint 포함). exit=2 (StructuredError → 기존
exit_code() 의 generic non-zero path).
--bulk mode 는 영향 0 (bulk arm 이 query 무시).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
이전: schema.v1.models 가 parser_version / chunker_version 단일 값만 보고 →
multi-medium corpus (md + pdf + code Rust/Python + dockerfile + k8s + manifest)
의 version cascade audit 누락 risk.
이후: additive minor — Models struct 에 active_parsers + active_chunkers Vec<String>
추가. backward compat: 기존 단일 field 보존 (markdown default), 신규 array 는
optional (#[serde(default)] + JSON schema required 미포함).
source:
- kebab_store_sqlite::fetch_distinct_parser_versions() 가
documents.parser_version DISTINCT + ORDER BY 반환.
- fetch_distinct_chunker_versions() 가 chunks.chunker_version 동일 pattern.
- collect_models 가 매 schema 호출마다 재계산 (cache 없음 — R-3 자동 해결).
wire schema additive only — 메이저 bump 불필요. v0.20.1 minor 로 충분.
integrations/claude-code/kebab/SKILL.md 동기 갱신.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
metro-korea.pdf v0.20 final-dogfood (2026-05-27):
- page 8 + page 13 양쪽 모두 600s default 까지 완전 timeout
(`ms: 600000, chars: 0, skipped: true`)
- 결과: 본문 indexed 안 됨 + page 당 20분 cost 낭비
cloud GPU Ollama 의 실측 per-page throughput 는 6-32s (parent spec 가정 105s 보다
훨씬 빠름). 60s 면 production-friendly upper-bound. dense/고해상도 page 는
config.toml override (`[pdf.ocr] request_timeout_secs = N`) 로 user 가 늘릴 수
있음 — Step 6 에서 HOTFIXES + parent spec cross-link.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
이전: `kebab search "rust" --config /tmp/nonexistent.toml --json` 가 exit=0 +
`{"hits":[]}` silent fallback to XDG default. typo / wrong path 가 0-hit 으로만
surface — debugging nightmare.
이후: kebab_config::ConfigNotFound thiserror::Error 추가, Config::load 의
`Some(p) if !p.exists()` arm 이 anyhow::Error::new(ConfigNotFound { path })
return. kebab_app::error_wire::classify 가 downcast → ErrorV1 code=config_not_found,
hint, details.path 채워서 stderr 에 ndjson 으로 emit.
R-1 (relative path): std::path::Path::exists() 는 cwd-relative — 별도 작업 없이
absolute + relative 모두 cover. integration test 두 개로 검증.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
capabilities_snapshot() 가 streaming_ask + single_file_ingest 를 hardcoded false 로
보고했으나 실제 구현은 v0.20 final-dogfood 에서 production-grade:
- kebab ask --stream → answer_event.v1 ndjson 191 event 정상 emit
- kebab ingest-file <path> / kebab ingest-stdin --title <T> → ingest_report.v1 정상
MCP host + Claude Code skill 등 agent 가 schema.capabilities 로 routing 결정 시
false negative → 사용자가 실제 동작 feature 를 사용 불가능하다고 오인.
http_daemon 은 false 유지 (별도 sub-item 의 non-impl).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Why: Step 2 의 doc-comment edit 가 향후 누군가 value list 를 재정렬
하거나 alias section 으로 분리할 때 silently 사라질 risk. clap 의
--help 렌더링 가 doc-comment 의 free-form text 라 grep-only smoke 가
유일한 검출 수단.
Change: 신규 test file (kebab-cli convention `cli_*` prefix 답습).
CARGO_BIN_EXE_kebab 으로 fresh binary 실행, stdout 의 `code` substring
assert. spec §4.4 의 acceptance row 1:1 mapping.
Refs: docs/superpowers/specs/2026-05-27-v0.20-sub1-bugfix2-spec.md §4.4
/ §5 (acceptance row 4).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Why: kebab search --media code 가 v0.18.0 부터 functional support 됨
(MEDIA_KINDS 외 path 로 first-class 처리, schema.v1.media_breakdown.code
존재). 그러나 SearchArgs 의 clap doc-comment + SKILL.md line 57 의
value list 가 stale — `code` 누락. user 가 --help 만 보고 code 미지원이라
오해 가능.
Change: 2 surface 동기 — main.rs line 158-160 의 multi-line clap
doc-comment + integrations/claude-code/kebab/SKILL.md line 57.
Rust binary surface / wire schema 변경 0.
Out of scope (follow-up): crates/kebab-mcp/tools/search.rs:44,
crates/kebab-core/src/search.rs:32+52, crates/kebab-app/src/
ingest_progress.rs:69, crates/kebab-cli/tests/wire_schema_breakdowns.rs:35
도 동일 stale list 보유. spec ACCEPT (round 1c) 의 grep boundary
밖이므로 본 round 미포함.
Refs: docs/superpowers/specs/2026-05-27-v0.20-sub1-bugfix2-spec.md
§4.3 / §4.3a.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Why: metro-korea.pdf (Identity-H CID font without ToUnicode CMap) 의
ingest 가 pdf_ocr_pages=0 으로 잘못 종료. lopdf 0.32.0 의 emit
`?Identity-H Unimplemented?` marker 28 ASCII char 가 is_valid_text_char()
의 0x0020..=0x007E range 통과 → ratio=1.0 → OCR fallback 0.5
threshold bypass.
Change: MOJIBAKE_MARKERS const + compute_valid_char_ratio() 4-단계
(strip → trim-empty zero → dominance cap-0.3 → 기존 ratio). marker
list extensible. is_valid_text_char() 본체 변경 0.
Tests: +2 unit (dominance + minority) on top of 기존 8. parser_version
/ wire schema 변경 0.
Refs: docs/superpowers/specs/2026-05-27-v0.20-sub1-bugfix2-spec.md
§4.1 / §4.2 / §6 R-1.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
v0.20.0 sub-item 1 dogfood report 의 Bug #2 — `[ingest.code].max_file_bytes`
가 walker 단계의 모든 file 에 일률 적용 → PDF/image/markdown 의 대부분 (256 KB+)
이 walker pre-extract skip. fix:
- `crates/kebab-source-fs/src/code_meta.rs`: `pub(crate) fn is_code_file(path)
-> bool` helper 추가 (= `code_lang_for_path(path).is_some()`).
- `crates/kebab-source-fs/src/connector.rs:168-190`: walker size-cap check 가
`is_code_file(&abs_path) && is_oversized(...)` short-circuit. PDF/image/
markdown 는 walker bypass — parser 의 자체 size control (lopdf load_mem,
image OCR max_pixels) 가 cover.
- `crates/kebab-source-fs/src/connector.rs` 기존 mod tests 안 추가:
`size_cap_skips_only_code_files` — 300 KB PDF + MD + .rs 의 walker 결과
검증. 기존 sibling test (huge.rs / longfile.rs, fixture 명 `.rs`) regression 0.
spec: docs/superpowers/specs/2026-05-27-v0.20-sub1-bugfix-spec.md (§3)
plan: docs/superpowers/plans/2026-05-27-v0.20-sub1-bugfix-plan.md (Step 1)
prior: b4d9e60 (PR #189)
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
fd918a6 의 F2 test file (crates/kebab-config/tests/pdf_ocr.rs) 의 4 line
`assert_eq!(bool_field, true|false)` 가 workspace clippy pedantic
의 `bool_assert_comparison` 위반 → CI gate
`cargo clippy --workspace --all-targets -- -D warnings` exit 1.
각 assertion 의 canonical form 적용:
- assert_eq!(x, false) → assert!(!x)
- assert_eq!(x, true) → assert!(x)
semantic + behavior 동일, 4 line edit, logic 변경 0.
review trail:
- impl result: .omc/reviews/2026-05-27-pdf-ocr-step-05-impl-result.md
- spec review: .omc/reviews/2026-05-27-pdf-ocr-step-05-spec-review-result.md (I-1)
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Step 3 (Group C) of v0.20.0 sub-item 1 (scanned PDF OCR) plan.
C1 — `page_image::extract_dctdecode_page_image(pdf_doc, page_num)` ->
Result<Option<Vec<u8>>>. lopdf 의 Resources/XObject traverse, 첫 image
XObject 의 /Filter 검사 (single Name OR Array form 모두 cover, spec §4.1
line 642-664), DCTDecode + JPEG magic 검증 통과 시 raw bytes 반환. 다른
encoding 또는 image XObject 부재 시 Ok(None). v1 scope = DCTDecode
passthrough only (H-3 invariant, image crate 도입 0).
Integration test (`tests/page_image.rs`, 2 test):
- f1_fixture_yields_dctdecode_jpeg_bytes — F1 fixture happy path.
- flate_raw_fixture_yields_none — F6 fixture negative path.
C2 — `text_quality::compute_valid_char_ratio(s) -> f32`. valid char =
ASCII printable + Hangul (Jamo/Compatibility/Syllables) + CJK + Latin
Extended + common Korean punctuation. 빈 string → 0.0. caller
(`kebab-app::pdf_ocr_apply`) 가 threshold 와 비교 (default 0.5).
Unit test (`mod tests`, 7 + F4 conditional):
- empty / pure ASCII / pure Hangul / pure PUA / mixed half / CJK / Hangul Jamo.
- f4_fixture_ratio_under_threshold: active (case A — lopdf extract_text 가
ToUnicode CMap 부재 시 빈 string 반환 → valid_ratio = 0.0000 < 0.3).
Also: Cargo.toml description 갱신 ("Text PDF extractor + scanned-page
image extract helpers ...", Step 1 A2 이연분).
fixture fix: mojibake.pdf 의 startxref 22130 → 22114 (16-byte offset 오차
수정 — lopdf strict parser 가 xref 를 찾지 못하는 버그 해결).
spec: docs/superpowers/specs/2026-05-27-pdf-scanned-ocr-spec.md (§4.1 line 600-722)
plan: docs/superpowers/plans/2026-05-27-pdf-scanned-ocr-plan.md (Step 3 C1+C2)
prior: aeeff36 (Step 2 fixtures) + fb3952d (Step 2 F7 record fix)
contract: §9 (additive minor wire bump — 후속 step)
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
PR-7 (v0.18 dogfood probe-first) 머지 후 PR-5 의 test `ask_tool_routes_multi_hop_true_to_decompose_first` 가 stale empty-KB contract 로 deterministic fail. test-only fix — production code 0 touch.
- `minimal_config`: `score_gate = 0.0` (probe 의 second gate `top_score < score_gate` 우회, test config isolation).
- fixture `workspace_root/note.md`: "This note is about a compound containing X and Y in detail." — build_match_string 의 token_and branch (FTS5 implicit-AND) 가 `compound` + `about` + `and` 셋 다 매칭 필요. empirical SQLite REPL (V007 trigram DDL) 로 1 hit 확정.
- 기존 assertion 보존, single-pass branch 도 query "anything" 으로 fixture 미매칭 → NoChunks refusal 유지.
- 신규 `_multi_hop_short_circuits_when_probe_empty` test (REQUIRED — round-1 critic HIGH + verifier 격상): probe-empty short-circuit 의 MCP-layer wire shape pin (kebab-rag::multi_hop_empty_probe_pool_refuses_before_any_llm_call 은 RAG-layer 만 pin, MCP-layer 안전망 부재).
- module doc 갱신: 두 test 가 각각 pin 하는 contract enumerate. inline 주석 (line 94-101) 도 새 contract 정합.
- HOTFIXES.md 신규 dated entry \`## 2026-05-26 — HOTFIX #15 ...\` (date-top convention).
검증: cargo test --workspace -j 1 — 회귀 0 (known flaky 1 → 0). cargo clippy --workspace --all-targets -j 1 -- -D warnings clean.
Wire / behavior / version cascade: 0.
Refs: docs/superpowers/specs/2026-05-26-hotfix-15-mcp-ask-multi-hop-flaky-spec.md (review 3 rounds APPROVE)
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
