refactor(app): ingest API 6변종 → 2 (ingest + ingest_with_config{IngestOpts})

summary_only를 IngestOpts에 흡수, progress/cancellable/opts 변종 제거.
재인덱싱 게이트 CHUNKS/SEARCH/ASK byte-IDENTICAL, clippy --all-targets 0.

crates/kebab-app/tests/pdf_ocr_events_insert_smoke.rs

@@ -66,7 +66,7 @@ async fn ingest_dual_write_doc_id_matches_ndjson() {
         std::fs::copy(scanned_pdf_src(), &dest).expect("copy scanned PDF");
 
         // Run ingest
-        kebab_app::ingest_with_config(env.config.clone(), env.scope(), false).expect("ingest");
+        kebab_app::ingest_with_config(env.config.clone(), env.scope(), kebab_app::IngestOpts::default()).expect("ingest");
 
         // Read ndjson log
         let log_files: Vec<_> = std::fs::read_dir(&log_dir)