chore(tui): PR #173 회차 1 리뷰 반영

test `spawn_snapshot_multi_hop_into_askopts` →
`ask_state_multi_hop_field_default_false_and_round_trips` 로 rename.
이전 이름은 spawn 동작 검증을 약속했으나 본문은 단순 field
default + setter round-trip 만 검증 — name 과 실제 의도의 mismatch.
새 이름이 실제 검증 (field shape pin) 과 정확히 일치.

doc string 도 spawn 동작은 별 path (live dogfood) 로 검증된다고
명확히 표기 — test 의 책임 범위가 무엇인지 reader 가 즉시 파악.

검증
- `cargo test -p kebab-tui -j 1 --test ask` — 42 test (6 multi-hop
  포함) 모두 통과.

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

crates/kebab-tui/tests/ask.rs

@@ -1154,18 +1154,15 @@ fn status_panel_omits_hops_summary_for_single_pass() {
     );
 }
 
+/// Light field-shape pin: the toggle exists, is bool, defaults
+/// to false, and round-trips through the public `AskState` surface.
+/// The actual spawn-time snapshot semantics (toggle value at Enter
+/// is the value the worker sees) are guaranteed by the
+/// `let multi_hop = s.multi_hop;` line at the top of
+/// `spawn_ask_worker` — exercised in live multi-hop dogfood rather
+/// than here (worker thread needs Ollama + a real KB).
 #[test]
-fn spawn_snapshot_multi_hop_into_askopts() {
-    // We can't actually spawn the worker (no Ollama / KB), but we
-    // can pin the snapshot semantics: the toggle's value at the
-    // moment of Enter is the value the worker sees. Flipping F2
-    // after Enter doesn't retro-affect the in-flight turn.
-    //
-    // Strategy: read the toggle directly, then verify the contract
-    // by inspecting `AskState.multi_hop` after a flip — the
-    // toggle's "next-turn" semantics are documented but we keep
-    // the regression light: the field exists, is bool, defaults
-    // to false, and round-trips through the public surface.
+fn ask_state_multi_hop_field_default_false_and_round_trips() {
     let mut app = fresh_app();
     let s = app.ask.as_mut().unwrap();
     assert!(!s.multi_hop, "default false");
@@ -1175,6 +1172,7 @@ fn spawn_snapshot_multi_hop_into_askopts() {
     assert!(!s.multi_hop, "settable back to false");
 }
 
+
 /// Small render helper shared with the rest of the test module's
 /// buffer-snapshot pattern. We define it locally here to avoid
 /// reaching into private internals.