feat: FT204 datetime — ISO 8601 パース・タイムゾーン変換・日時演算 (v1.8.81)#569
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- 実装: parse_datetime / convert_timezone / diff_datetimes / get_now / add_duration - ZoneInfo によるタイムゾーン変換（pytz 不要） - _TIMEZONE_PATTERN による入力バリデーション（パストラバーサル防御） - _ISO8601_PATTERN による入力バリデーション（SQLi/ReDoS 防御） - naive/aware 混在検出（TypeError を API 境界で 422 に変換） - セキュリティ診断: 合格（全12カテゴリ） - クラッカーペンテスト: 堅牢（15攻撃すべて耐えた） - ruff DTZ ルール（flake8-datetimez）を pyproject.toml に追加 - バージョン v1.8.81 Closes #568 Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Summary
datetime+zoneinfoモジュールの FT204 実装（セキュリティ診断・クラッカーペンテスト両方実施）ruff DTZルール（flake8-datetimez）をpyproject.tomlに追加 —datetime.now()naive 呼び出しを検出実装内容
parse_datetime(text)convert_timezone(iso8601, tz_name)ZoneInfo）diff_datetimes(start, end)get_now(tz_name)add_duration(iso8601, days, hours, minutes)セキュリティ診断結果（FT204: 204 % 3 = 0）
総合評価: 合格
_TIMEZONE_PATTERNで../../etc/passwd等を遮断_ISO8601_PATTERNでアポストロフィ等を遮断クラッカーペンテスト結果（FT204: 204 % 4 = 0）
攻撃耐性評価: 堅牢（15攻撃すべて耐えた）
Test plan
uv run pytest)Closes #568
🤖 Generated with Claude Code