feat(app): ingest 별칭 생성 hook (flag off 기본, fail-soft)

crates/kebab-app/src/lib.rs

@@ -1251,10 +1251,35 @@ fn ingest_one_asset(
         build_canonical_document(asset, metadata, parsed_blocks, parser_version, all_warnings)
             .context("kb-parse-md::build_canonical_document")?;
 
-    let chunks = MdHeadingV1Chunker
+    let mut chunks = MdHeadingV1Chunker
         .chunk(&canonical, chunk_policy)
         .context("kb-chunk::MdHeadingV1Chunker::chunk")?;
 
+    // Phase 2 doc-side expansion: flag on 이면 청크당 별칭 생성 (fail-soft).
+    if app.config.ingest.expansion.enabled {
+        let exp = &app.config.ingest.expansion;
+        let llm_built = if exp.model.is_empty() {
+            OllamaLanguageModel::new(&app.config)
+        } else {
+            OllamaLanguageModel::with_model(&app.config, &exp.model)
+        };
+        match llm_built {
+            Ok(llm) => {
+                let generator =
+                    crate::expansion::ExpansionGenerator::new(&llm, exp.max_aliases_per_chunk);
+                for chunk in &mut chunks {
+                    chunk.aliases = generator.generate(chunk);
+                }
+            }
+            Err(e) => {
+                tracing::warn!(
+                    target: "kebab-app", error = %e,
+                    "kb-app::ingest: expansion LLM 빌드 실패 — 별칭 없이 진행"
+                );
+            }
+        }
+    }
+
     // Stamp chunker + embedding versions so Task 7's skip detection has
     // data on the second run.
     canonical.last_chunker_version = Some(MdHeadingV1Chunker.chunker_version());

crates/kebab-app/tests/search_lexical.rs

@@ -109,10 +109,10 @@ fn first_ingest_bumps_corpus_revision() {
     let env = TestEnv::lexical_only();
     let store_before = kebab_store_sqlite::SqliteStore::open(&env.config).unwrap();
     store_before.run_migrations().unwrap();
-    // V004 seeds 0; V009 migration bumps to 1 to invalidate any pre-V009
-    // LRU cache (spec §5.2). Baseline before ingest = post-migration value.
+    // V004 seeds 0; V009 + V010 migrations each bump by 1 to invalidate
+    // stale LRU caches (spec §5.2). Baseline before ingest = 2.
     let baseline = store_before.corpus_revision();
-    assert_eq!(baseline, 1, "fresh store post-V009 baseline = 1");
+    assert_eq!(baseline, 2, "fresh store post-V010 baseline = 2");
 
     let report = kebab_app::ingest_with_config(env.config.clone(), env.scope(), true).unwrap();
     assert!(

crates/kebab-llm-local/src/ollama.rs

@@ -95,6 +95,24 @@ impl OllamaLanguageModel {
             default_seed: llm.seed,
         })
     }
+
+    /// `new` 와 동일하되 모델 ID 만 override. doc-side expansion(Task 5)이
+    /// `[ingest.expansion].model` 을 쓸 수 있게 한다. 빈 문자열이면 호출측이
+    /// `new` 를 쓰도록 분기(여기선 비어있지 않은 model_id 를 신뢰).
+    pub fn with_model(config: &kebab_config::Config, model_id: &str) -> anyhow::Result<Self> {
+        let llm = &config.models.llm;
+        let client = reqwest::blocking::Client::builder()
+            .timeout(Duration::from_secs(llm.request_timeout_secs))
+            .build()?;
+        Ok(Self {
+            client,
+            endpoint: llm.endpoint.clone(),
+            model_id: model_id.to_string(),
+            context_tokens: llm.context_tokens,
+            default_temperature: llm.temperature,
+            default_seed: llm.seed,
+        })
+    }
 }
 
 impl LanguageModel for OllamaLanguageModel {