refactor(db): 迁移异步数据库操作与事务边界 - #105
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- repository 和 UoW 工厂归入 app/persistence，business 保留用例入口 - 实体批量读取通过应用用例，数据库 lint 使用独立配置 - 记录 SDK 合并发布及现有 PostgreSQL 验收结果
- 采用正式 SDK 0.1.4，拆分 Extension state 用例和 session-bound repository - 迁移 Host、Twitter state/config 消费者和 Source catalog，保留锁与 enabled RPC - 验证并发、回滚、取消清理与补偿，隔离 Host 0.2 兼容窗口 - 记录 callback SDK 修复 #39 的正式交付依赖
- 验证公开 route 的启动、取消和重启 - 关闭步骤 05 artifact 阻塞，进入 Source 与 Job/Cron 迁移
- 在 persistence 组合短事务，保留 Cron 与 Job 的原子创建 - 异步化执行资格检查，验证并发领取、取消收尾与回滚 - 扩大数据库边界 lint 并适配既有验收调用
- 通过必需的 UoW 组合 graph、storage 与 Source checkpoint - 保持协议定义的部分提交与清理语义，修复 Twitter checkpoint 提前推进 - 验证 Memos 附件并发归属及采集失败回滚，扩大边界 lint
- 将检索 SQL 与批量投影写入移入 persistence - 明确组织行为事务边界并迁移图导航调用链 - 验证重放、回滚、媒体解释和导航约束
- 使用有界队列和独立异步事务持久化日志 - 排空调度回调及日志后释放数据库连接池 - 明确 readiness 的隔离同步适配边界
- 完成 MCP 数据库调用链与旧 factory/session API 清零 - 将测试数据准备移入独立适配器，业务验收调用异步入口 - 通过全 runtime lint 和结构检查维护持久化及事务职责
- 参数化图规模和并发，记录提交与批量读取延迟 - 精确清理本轮数据并保存隔离环境测量证据
- 先排空 Job，再取消其余调度回调 - 收尾阶段拒绝重复取消，停止 admission 后拒绝新 claim - 验证 terminal write 与 shutdown 的交错
- 更新最终迁移清单并区分历史阶段证据\n- 记录已通过的代码检查与待完成的 preview 交付
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当前 async HTTP、Resolver 和后台任务曾直接执行同步 SQL，多个 Manager 又用可选 session 参数切换事务所有权。此变更将业务数据库 I/O 迁移到原生 async，并以用例拥有的短 UoW 明确提交和回滚边界。
app/business保留业务编排；app/persistence持有 session-bound repositories 与事务工厂。HTTP 通过业务入口访问数据库，并发 task 各自拥有 UoW。依赖 ext-reg #38、#39 已合并并正式发布，Core 锁定 Runtime SDK 0.1.5。Host 合同推进到 0.2，七个 first-party wheel 声明匹配窗口；旧同步 wheel 必须先停用并升级，新 immutable artifact 版本仍由正式 Release PR 准备。
本地验证：完整
pdm run check通过；隔离 PostgreSQL 回归覆盖 Graph/blob 回滚、配置 HTTP、AI/Agent/Peer、组织行为、Memos/RSS、检索，首轮 38 passed／2 skipped，fixture 修复后的目标复验通过；三项无需真实 AI 凭据的语义纵向验收通过。任务 probes 验证 Job/Cron 并发与取消、扩展 state/config 生命周期、采集 checkpoint、导航、MCP、日志隔离和 shutdown drain。OpenAPI 无差异，无 schema migration。Mail graph/checkpoint 已验证；本轮未运行依赖专用 Dovecot distribution 和命名 disposable database 的完整 IMAP 验收。已提供
scripts/benchmark_database.py：100 Blocks／99 Relations、30 次提交及批量读取，在本任务隔离 PostgreSQL 上并发 1／8 分别为 9.127／51.354 graph/s，两次零错误。原始延迟和环境记录在 task packet；没有旧版对照，不宣称相对同步版本的提升倍数。最终提交
52d59239ce6d34c7379f563d73c51a3047b7a4f4已通过全部远端验收：repository/artifact/portable-runtime、preview database、preview application 部署及线上探测。PR 已按后续授权合并。执行计划及逐步证据见tasks/async-database-boundaries/。交付完成：#105 合并为
5b8dbf8，Release PR #106 合并为2c4be48，发布 Core 0.4.0 及七个匹配 Host 0.2 的扩展版本。生产部署与探测 全部成功，stable已更新为sha256:111be24909a3de44dfd779080606dce6e4642d091245a3004b4d3f25fd4de1ca。任务实施与交付已完成，task packet 保留为已完成任务的历史证据。