docs(rename): kb → kebab — README, tasks/, docs/, design doc, report

마지막 commit. 모든 .md 안의 `kb` 단어 일괄 갱신.

- 19 개 crate 이름 (`kb-core`, `kb-app`, …) → `kebab-*` (Rust 모듈
  path 표기 `kb_*` → `kebab_*` 포함).
- 미래 component (`kb-tui`, `kb-desktop`, `kb-asr-whisper`, `kb-ocr`,
  `kb-mcp`, `kb-vlm`, `kb-rerank`, `kb-vision-ocr`, `kb-index`,
  `kb-smoke`, `kb-architecture`) → `kebab-*` (P6+ 가 시작될 때
  같은 prefix 사용).
- CLI 명령 예제: `kb ingest` / `kb search` / `kb ask` / `kb init` /
  `kb doctor` / `kb inspect` / `kb list` / `kb eval` →
  `kebab <verb>`. fenced code block + 인라인 backtick 모두.
- XDG paths + env vars + binary 경로 (`target/release/kb` →
  `target/release/kebab`) 동기화.
- design doc / 최초 보고서 / SMOKE / HOTFIXES / phase epic / task
  spec 모든 reference 통일.
- task-decomposition.md 의 `git -c user.name=kb` 는 과거 git history
  기록용 author 정보라 그대로 유지 (실제 git history 의 author 는
  변경 불가).
- `tasks/phase-5-evaluation.md` 의 `status: planned` →
  `completed` 도 같이 (P5-1 + P5-2 PR 머지 후 미반영분).

## 검증

- `grep -rEn "\bkb-[a-z]|\bkb_[a-z]|\.config/kb\b|kb\.sqlite|\bKB_[A-Z]"
   --include="*.md"` 0 hits (task-decomposition.md 의 git author
  제외).
- 모든 file path reference 살아있음 (renamed file 들 모두 새 path
  로 update).

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

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

tasks/p8/p8-2-segment-chunker.md

@@ -1,12 +1,12 @@
 ---
 phase: P8
-component: kb-chunk (audio-segment-v1)
+component: kebab-chunk (audio-segment-v1)
 task_id: p8-2
 title: "Audio segment chunker (audio-segment-v1)"
 status: planned
 depends_on: [p8-1]
 unblocks: []
-contract_source: ../../docs/superpowers/specs/2026-04-27-kb-final-form-design.md
+contract_source: ../../docs/superpowers/specs/2026-04-27-kebab-final-form-design.md
 contract_sections: [§3.5 Chunk, §3.4 SourceSpan::Time, §4.2 chunk_id recipe, §0 Q3 citation, §9 versioning]
 ---
 
@@ -22,8 +22,8 @@ Per-medium chunker. Tiny but versioned — `chunk_id` depends on `chunker_versio
 
 ## Allowed dependencies
 
-- `kb-core`
-- `kb-config`
+- `kebab-core`
+- `kebab-config`
 - `serde`, `serde_json`
 - `blake3` (policy_hash)
 - `serde-json-canonicalizer`
@@ -31,30 +31,30 @@ Per-medium chunker. Tiny but versioned — `chunk_id` depends on `chunker_versio
 
 ## Forbidden dependencies
 
-- `kb-source-fs`, `kb-parse-md`, `kb-parse-pdf`, `kb-parse-image`, `kb-parse-audio` (consumes via `kb-core` only), `kb-normalize`, `kb-store-*`, `kb-embed*`, `kb-search`, `kb-llm*`, `kb-rag`, `kb-tui`, `kb-desktop`
+- `kebab-source-fs`, `kebab-parse-md`, `kebab-parse-pdf`, `kebab-parse-image`, `kebab-parse-audio` (consumes via `kebab-core` only), `kebab-normalize`, `kebab-store-*`, `kebab-embed*`, `kebab-search`, `kebab-llm*`, `kebab-rag`, `kebab-tui`, `kebab-desktop`
 
 ## Inputs
 
 | input | type | source |
 |-------|------|--------|
-| `CanonicalDocument` containing one `AudioRefBlock` with `Transcript` | `kb_core::CanonicalDocument` | p8-1 |
-| `ChunkPolicy` | `kb_core::ChunkPolicy` | `kb-app` |
+| `CanonicalDocument` containing one `AudioRefBlock` with `Transcript` | `kebab_core::CanonicalDocument` | p8-1 |
+| `ChunkPolicy` | `kebab_core::ChunkPolicy` | `kebab-app` |
 
 ## Outputs
 
 | output | type | downstream |
 |--------|------|------------|
-| `Vec<Chunk>` | `kb_core::Chunk` | `kb-store-sqlite`, embedders |
+| `Vec<Chunk>` | `kebab_core::Chunk` | `kebab-store-sqlite`, embedders |
 
 ## Public surface (signatures only — no new types)
 
 ```rust
 pub struct AudioSegmentV1Chunker;
 
-impl kb_core::Chunker for AudioSegmentV1Chunker {
-    fn chunker_version(&self) -> kb_core::ChunkerVersion { kb_core::ChunkerVersion("audio-segment-v1".into()) }
-    fn policy_hash(&self, policy: &kb_core::ChunkPolicy) -> String;
-    fn chunk(&self, doc: &kb_core::CanonicalDocument, policy: &kb_core::ChunkPolicy) -> anyhow::Result<Vec<kb_core::Chunk>>;
+impl kebab_core::Chunker for AudioSegmentV1Chunker {
+    fn chunker_version(&self) -> kebab_core::ChunkerVersion { kebab_core::ChunkerVersion("audio-segment-v1".into()) }
+    fn policy_hash(&self, policy: &kebab_core::ChunkPolicy) -> String;
+    fn chunk(&self, doc: &kebab_core::CanonicalDocument, policy: &kebab_core::ChunkPolicy) -> anyhow::Result<Vec<kebab_core::Chunk>>;
 }
 ```
 
@@ -92,12 +92,12 @@ impl kb_core::Chunker for AudioSegmentV1Chunker {
 | determinism | same input → same chunk_ids twice | inline |
 | snapshot | `Vec<Chunk>` JSON for fixture transcript stable | `fixtures/audio/transcript-1.json` (constructed) |
 
-All tests under `cargo test -p kb-chunk audio`.
+All tests under `cargo test -p kebab-chunk audio`.
 
 ## Definition of Done
 
-- [ ] `cargo check -p kb-chunk` passes (md-heading-v1 + pdf-page-v1 + audio-segment-v1 all coexist)
-- [ ] `cargo test -p kb-chunk audio` passes
+- [ ] `cargo check -p kebab-chunk` passes (md-heading-v1 + pdf-page-v1 + audio-segment-v1 all coexist)
+- [ ] `cargo test -p kebab-chunk audio` passes
 - [ ] Snapshot stable across two runs
 - [ ] No imports outside Allowed dependencies
 - [ ] PR links design §3.5, §3.4 SourceSpan::Time, §4.2