refactor(db): 统一数据库 schema — 软删除、命名规范、约束标准化
- 全表新增 deleted_at 列,统一软删除替代硬删除+archived_at - models.model_id 重命名为 external_id,消除语义混淆 - conversations.model_id 改为可空(模型为建议而非绑定) - messages 新增 updated_at,移除 CASCADE 改为 DAO 层级联 - 移除 DB 层 UNIQUE 约束,改为应用层检查(配合软删除) - 新增 helpers.ts(baseColumns + 构造层防御)、ESLint 规则、契约测试 - 迁移 0004 补全 CHECK 约束(providers.type/materials.status/messages.role) - DAO 层全面重写:级联软删除、应用层唯一、provider 删除保护 - 路由/前端/测试全量适配 externalId 重命名及类型变更
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@@ -29,6 +29,13 @@
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"when": 1780463734721,
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"tag": "0003_lying_cassandra_nova",
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"breakpoints": true
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},
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{
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"idx": 4,
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"version": "6",
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"when": 1780587528226,
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"tag": "0004_db_schema_standardization",
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"breakpoints": true
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}
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]
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}
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