feat: #1775 默认项目/素材库幂等化（DB 唯一约束兜底） #1783
Merged
xiaoxia
merged 2 commits from 2026-09-08 08:43:31 +08:00
feature/default-project-idempotent-1775 into develop
2 Commits
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 saas-backend-agent
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f6c18b3aa9 |
chore: schema 快照仅增量 is_default 列+部分唯一索引（修正缩进格式）
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saas-backend-agent
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6b1966ce90 |
feat: #1775 默认项目/默认素材库幂等化（DB 唯一约束兜底）
问题：小程序端 getOrCreateDefaultProject 在重试/并发/重复调用下， 仅靠应用层"先查后插"不保证幂等，会给同一用户重复创建默认项目。 素材库虽有唯一约束 uq_asset_libraries_project_kind（迁移058）， 但 ensure-default 接口未捕获冲突，并发下直接 500。 改动： 1. projects 表新增 is_default 列 + 部分唯一索引 uq_projects_owner_default（owner_user_id WHERE is_default=true）， 保证每用户至多一个默认项目（迁移069，存量"默认项目"最早一条回填） 2. Project 实体/Model/Repository 增加 is_default 字段 3. 新增 get_or_create_default_project / find_default_by_owner： INSERT 冲突时捕获 IntegrityError 回滚重查，返回已有记录不报500 4. 素材库仓储新增 get_or_create_default_library（同上幂等语义） 5. 新增 POST /projects/ensure-default 组合接口： 一次请求幂等返回默认项目 + 三类默认素材库ID 6. ensure-default 素材库接口改用幂等仓储方法（修复并发500） 7. in-memory 仓储同步幂等方法 测试：15 个新测试（并发10次只建1个、跨用户独立、IntegrityError恢复、 字段语义），99 个相关旧测试全过。 |