style: cargo fmt --all (round 4 ingest log feature follow-up)

Phase C4 executor 의 마지막 `fix(test): clippy + fmt fixes` commit 이
test file 부분만 fmt 적용. workspace 전체 fmt 누락 발견 → cargo fmt --all
적용. 모든 import alphabetical reorder + line wrapping 정합.

추가 untracked artifact 동시 commit:
- docs/superpowers/specs/2026-05-28-v0.20-ingest-log-spec.md (491 line, ACCEPT)
- docs/superpowers/plans/2026-05-28-v0.20-ingest-log-plan.md (616 line, ACCEPT)

workspace test: 1370 passed / 0 failed / 50 ignored, ingest_log_smoke green.

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

crates/kebab-app/tests/search_stale_integration.rs

@@ -29,7 +29,9 @@ fn fresh_doc_is_not_stale_with_default_threshold() {
     assert!(
         hits.iter().all(|h| !h.stale),
         "freshly-ingested doc must not be stale at default 30d threshold: {:?}",
-        hits.iter().map(|h| (h.doc_path.0.clone(), h.stale)).collect::<Vec<_>>()
+        hits.iter()
+            .map(|h| (h.doc_path.0.clone(), h.stale))
+            .collect::<Vec<_>>()
     );
 }
 
@@ -50,7 +52,9 @@ fn threshold_zero_disables_staleness() {
     assert!(
         hits.iter().all(|h| !h.stale),
         "threshold=0 disables staleness even for year-old docs: {:?}",
-        hits.iter().map(|h| (h.doc_path.0.clone(), h.stale)).collect::<Vec<_>>()
+        hits.iter()
+            .map(|h| (h.doc_path.0.clone(), h.stale))
+            .collect::<Vec<_>>()
     );
 }