weichen
fb7104d7ce
Why: The first material reply could stream an unsupported numeric relationship before the sourced background card had any verified finding. Evidence: Task 2 red/green SQLite run tests cover parent provider suppression, queue/reuse, completed source binding, focus retention, squad entry, failed/unknown state, and attempt ordering; full Backend vet/Go/race SELF receipt /tmp/fast-slow-u3-r05-task2-backend-final-v2.json exited 0. Impact: Prestarted material sends receive one server-owned status message with zero parent model calls; small-text and explicit completed follow-up paths retain their existing runner. No public contract or model budget increases. Refs: U3 r0.5 approved design and plan; Backend PR #193
Agent-System-Backend
对话系统后端：Go 模块化单体，默认构建为单二进制（go:embed 内嵌前端与嵌入式 SQLite 存储）。组合 Agent-Native / Agent-Squad / Agent-Intent 生态，依赖 agent-system-core 契约。
契约与架构见 Agent-System-Documents 设计方案与架构文档；开发规范见 development-guidelines（Dev 仓 development/guidelines）。本仓为 Agent-System 多仓组合的组成部分。