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-cli/tests/wire_search_stale.rs

@@ -59,15 +59,14 @@ fn search_json_includes_indexed_at_and_stale() {
         .get("hits")
         .and_then(|h| h.as_array())
         .unwrap_or_else(|| panic!("expected hits array, got {stdout}"));
-    let first = arr.first().unwrap_or_else(|| panic!("expected ≥1 hit, got empty hits: {stdout}"));
+    let first = arr
+        .first()
+        .unwrap_or_else(|| panic!("expected ≥1 hit, got empty hits: {stdout}"));
     assert!(
         first.get("indexed_at").is_some(),
         "missing indexed_at in {first}"
     );
-    assert!(
-        first.get("stale").is_some(),
-        "missing stale in {first}"
-    );
+    assert!(first.get("stale").is_some(), "missing stale in {first}");
     assert_eq!(
         first["stale"], false,
         "freshly ingested doc must not be stale at default 30d threshold"