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>

crates/kebab-store-sqlite/tests/migration.rs

@@ -0,0 +1,83 @@
+//! Migration test: a fresh DB, after `run_migrations`, exposes every
+//! table and index P1 needs (per §5.1–§5.7).
+
+use kebab_store_sqlite::SqliteStore;
+
+mod common;
+
+#[test]
+fn fresh_db_has_all_p1_tables_and_indexes() {
+    let env = common::TestEnv::new();
+    let store = SqliteStore::open(&env.config()).expect("open");
+    store.run_migrations().expect("run migrations");
+
+    // Pull the list of user tables from sqlite_master.
+    let tables: Vec<String> = env.with_conn(|c| {
+        let mut stmt = c.prepare(
+            "SELECT name FROM sqlite_master
+             WHERE type = 'table' AND name NOT LIKE 'sqlite_%'
+             ORDER BY name",
+        )?;
+        let rows = stmt.query_map([], |r| r.get::<_, String>(0))?;
+        let tables: rusqlite::Result<Vec<String>> = rows.collect();
+        tables
+    });
+
+    let required = [
+        "answers",
+        "assets",
+        "blocks",
+        "chunks",
+        "document_tags",
+        "documents",
+        "embedding_records",
+        "eval_query_results",
+        "eval_runs",
+        "ingest_runs",
+        "jobs",
+        // refinery's own bookkeeping table (`refinery_schema_history`)
+        // also lands here; we don't pin it but it's expected.
+        "migrations",
+        "schema_meta",
+    ];
+    for t in required {
+        assert!(
+            tables.iter().any(|n| n == t),
+            "table `{t}` missing; got {tables:?}"
+        );
+    }
+
+    // Pin the documented indexes (subset that matters for hot paths).
+    let indexes: Vec<String> = env.with_conn(|c| {
+        let mut stmt = c.prepare(
+            "SELECT name FROM sqlite_master
+             WHERE type = 'index' AND name NOT LIKE 'sqlite_%'
+             ORDER BY name",
+        )?;
+        let rows = stmt.query_map([], |r| r.get::<_, String>(0))?;
+        let idx: rusqlite::Result<Vec<String>> = rows.collect();
+        idx
+    });
+    for i in [
+        "idx_assets_workspace_path",
+        "idx_assets_media_type",
+        "idx_docs_workspace_path",
+        "idx_docs_lang",
+        "idx_docs_source_type",
+        "idx_document_tags_tag",
+        "idx_blocks_doc_id",
+        "idx_chunks_doc_id",
+        "idx_chunks_chunker_version",
+        "idx_embed_chunk",
+        "idx_embed_model",
+        "idx_jobs_status",
+        "idx_jobs_kind",
+        "idx_answers_created_at",
+        "idx_answers_grounded",
+    ] {
+        assert!(
+            indexes.iter().any(|n| n == i),
+            "index `{i}` missing; got {indexes:?}"
+        );
+    }
+}