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-store-sqlite/tests/contract_roundtrip.rs

@@ -10,7 +10,7 @@ use std::path::PathBuf;
 
 use kebab_chunk::MdHeadingV1Chunker;
 use kebab_core::{
-    AssetId, AssetStorage, Checksum, ChunkPolicy, ChunkerVersion, Chunker, DocumentStore,
+    AssetId, AssetStorage, Checksum, ChunkPolicy, Chunker, ChunkerVersion, DocumentStore,
     MediaType, ParserVersion, RawAsset, SourceUri, WorkspacePath,
 };
 use kebab_parse_md::{BodyHints, build_canonical_document, parse_blocks, parse_frontmatter};
@@ -58,8 +58,7 @@ fn document_and_chunks_round_trip_through_sqlite() {
         fs_mtime: asset.discovered_at,
         fallback_lang: Some("en".into()),
     };
-    let (mut metadata, _fm_span, _fm_warns) =
-        parse_frontmatter(&bytes, &hints).unwrap();
+    let (mut metadata, _fm_span, _fm_warns) = parse_frontmatter(&bytes, &hints).unwrap();
     let (parsed_blocks, parse_warns) = parse_blocks(&bytes, 1).unwrap();
 
     metadata.aliases.sort();
@@ -91,9 +90,7 @@ fn document_and_chunks_round_trip_through_sqlite() {
     store
         .put_blocks(&doc.doc_id, &doc.blocks)
         .expect("put_blocks");
-    store
-        .put_chunks(&doc.doc_id, &chunks)
-        .expect("put_chunks");
+    store.put_chunks(&doc.doc_id, &chunks).expect("put_chunks");
 
     // ── Read back ────────────────────────────────────────────────────
     let loaded = store