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/cli_error_wire.rs

@@ -36,12 +36,7 @@ fn json_mode_emits_error_v1_on_config_invalid() {
     std::fs::write(&bad_config, b"this is not { valid toml !!!").unwrap();
 
     let mut cmd = Command::new(kebab_bin());
-    cmd.args([
-        "--json",
-        "--config",
-        bad_config.to_str().unwrap(),
-        "ingest",
-    ]);
+    cmd.args(["--json", "--config", bad_config.to_str().unwrap(), "ingest"]);
     for (k, v) in xdg_envs(tmp.path()) {
         cmd.env(k, v);
     }
@@ -55,7 +50,10 @@ fn json_mode_emits_error_v1_on_config_invalid() {
     assert_eq!(exit_code, 2, "expected exit code 2, got {exit_code}");
 
     let stderr = String::from_utf8(out.stderr).unwrap();
-    let first_line = stderr.lines().next().expect("stderr must have at least one line");
+    let first_line = stderr
+        .lines()
+        .next()
+        .expect("stderr must have at least one line");
     let v: serde_json::Value =
         serde_json::from_str(first_line).expect("stderr first line must be valid JSON");