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-mcp/tests/tools_call_search_trace.rs

@@ -79,7 +79,10 @@ async fn search_with_trace_true_returns_trace_field() {
     let result = kebab_mcp::tools::search::handle(handler.state(), make_input(Some(true)));
     let v = extract_json(&result);
     assert_eq!(v["schema_version"], "search_response.v1");
-    assert!(v["trace"].is_object(), "trace field present when trace:true");
+    assert!(
+        v["trace"].is_object(),
+        "trace field present when trace:true"
+    );
     assert!(v["trace"]["timing"]["total_ms"].is_number());
     assert!(v["trace"]["lexical"].is_array());
     assert!(v["trace"]["vector"].is_array());