docs(ja-JP): translate plain text code blocks to Japanese

Translate English prose inside plain text code blocks (```text, ```)
across ja-JP documentation to Japanese, following the same approach
as PR #753 (zh-CN translation).

Translated content includes:
- Output template labels and status messages
- Folder tree inline comments
- CLI workflow descriptions
- Error/warning message examples
- Commit message templates and PR title examples

Technical identifiers, file paths, and actual code remain untranslated.

docs/ja-JP/commands/verify.md

@@ -36,16 +36,16 @@
 簡潔な検証レポートを生成します:
 
 ```
-VERIFICATION: [PASS/FAIL]
+検証結果: [PASS/FAIL]
 
-Build:    [OK/FAIL]
-Types:    [OK/X errors]
-Lint:     [OK/X issues]
-Tests:    [X/Y passed, Z% coverage]
-Secrets:  [OK/X found]
-Logs:     [OK/X console.logs]
+ビルド:       [OK/FAIL]
+型:           [OK/Xエラー]
+Lint:         [OK/X件の問題]
+テスト:       [X/Y合格, Z%カバレッジ]
+シークレット: [OK/X件発見]
+ログ:         [OK/X件のconsole.log]
 
-Ready for PR: [YES/NO]
+PR準備完了: [YES/NO]
 ```
 
 重大な問題がある場合は、修正案とともにリストアップします。