docs(adr): ADR-0009 schema migration story を draft する (#409)#416
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評価レポート REPORT_commercial_feasibility.md (PR #401) が「マイグレーション 機構の欠如」を **最大の実務懸念** と指摘。ADR-0005 が deferred とした migration story の trigger 条件 (外部視点 friction の明文化) が満たされた ため、ADR-0009 として整理。 ### Status: Accepted 3 options を比較: - A: 外付け Phinx / Liquibase - B: 版付き SchemaDefinition + auto-generated ALTER TABLE - C: cli/schemaDiff.php + operator-applied SQL (採用) 採用理由: NeNe philosophy (small framework / env-driven / operator-side concerns stay operator-side) と一致。ADR-0005 の single source を保つ (SchemaDefinition::buildTables() を直接読む)。destructive ops の責任を operator に明示 (rollback fantasy を約束しない)。Phinx を排除しない。 ### 初期 scope - Add column / Add table / Add index は ALTER TABLE 生成 - Drop column / Drop table / Drop index / type change / rename は CLI が warning を出すが SQL は出さない (operator 手書き) ### 実装 本 ADR は draft のみ。実装は次の trial / PR で個別。 ### Cross-link ADR-0005 Consequences の "Migrations are out of scope" 文に "addressed by ADR-0009" の cross-link を追加。 ADR README index に 0009 を追加。 Closes #409. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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評価レポート `REPORT_commercial_feasibility.md` (#401) が「マイグレーション機構の欠如」を 最大の実務懸念 と指摘 → ADR-0005 が deferred とした migration story の trigger 条件 (外部視点 friction 明文化) が満たされた。ADR-0009 として整理。
Decision: Option C 採用
3 options 比較:
採用は Option C。NeNe philosophy (small framework / env-driven / operator-side concerns stay operator-side) と一致。
Initial scope (実装は別 PR)
Cross-link
実装
本 PR は draft のみ。実装 (`cli/schemaDiff.php`) は次の trial / PR で。
Test plan
Closes #409.