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/reset_orphans.rs

@@ -16,7 +16,7 @@
 mod common;
 
 use common::TestEnv;
-use kebab_app::IngestOpts;
+use kebab_app::{IngestOpts, ingest_with_config};
 use kebab_app::reset::{ResetScope, execute};
 use kebab_core::{DocFilter, DocumentStore, SourceScope};
 
@@ -51,13 +51,8 @@ fn reset_orphans_only_purges_out_of_scope_docs() {
         include: vec!["**/*.rs".to_string()],
         exclude: env.config.workspace.exclude.clone(),
     };
-    let first = kebab_app::ingest_with_config_opts(
-        env.config.clone(),
-        wide_scope,
-        false,
-        IngestOpts::default(),
-    )
-    .expect("first ingest must succeed");
+    let first = ingest_with_config(env.config.clone(), wide_scope, IngestOpts::default())
+        .expect("first ingest must succeed");
     // The fixture workspace may contain other .rs files — just assert we
     // got at least 3 new docs (our a.rs, b.rs, c.rs).
     assert!(first.new >= 3, "expected at least 3 new docs: {first:?}");