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-parse-md/tests/frontmatter_snapshots.rs

@@ -52,8 +52,7 @@ fn assert_snapshot(fixture: &str, baseline: &str) {
     };
     let actual: Value = serde_json::to_value(&snap).unwrap();
 
-    let expected_text =
-        fs::read_to_string(dir.join(baseline)).expect("snapshot baseline readable");
+    let expected_text = fs::read_to_string(dir.join(baseline)).expect("snapshot baseline readable");
     let expected: Value = serde_json::from_str(&expected_text).expect("baseline parses as json");
 
     if actual != expected {
@@ -107,5 +106,8 @@ fn snapshot_is_deterministic_across_runs() {
     let bytes = fs::read(dir.join("frontmatter-only.md")).unwrap();
     let (a, _, _) = parse_frontmatter(&bytes, &pinned_hints()).unwrap();
     let (b, _, _) = parse_frontmatter(&bytes, &pinned_hints()).unwrap();
-    assert_eq!(serde_json::to_value(&a).unwrap(), serde_json::to_value(&b).unwrap());
+    assert_eq!(
+        serde_json::to_value(&a).unwrap(),
+        serde_json::to_value(&b).unwrap()
+    );
 }