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S0 first shape: task workspace overlay with frozen base and CAS apply (pin bd4b3bc) #318

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weichen merged 6 commits from feature/agent-s0-workspace-overlay into main 2026-10-11 02:29:02 +00:00
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weichen commented 2026-10-11 02:24:17 +00:00
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S0-1（提案 §4.4，用户「继续完成下一步」授权）：sandbox 档会话目录由直写改为冻结基底 overlay——

  • 执行前硬链接冻结 + sha256 基线（.agentx 排除）
  • 执行期 bwrap overlay 三件套，写入只落私有 upper；超时/中止整体丢弃（半写状态不落地）
  • 正常退出 CAS 写回（基线一致→原子替换/删除；外部已改→双存 .conflict-）
  • -ws 壳目录用后即清；工具输出尾附变更摘要（模型可见）
  • 入口 --exec-workspace overlay / AGENT_SYSTEM_EXEC_WORKSPACE（仅 sandbox 后端；缺省行为不变）

Evidence: Backend #135/#136 CI success（GATE）；bwrap 集成 3（overlay 往返含 whiteout、超时丢弃、壳清理）+ 单测 4；live 三件套端到端（失败执行零落地→[工作区变更：无]、成功 build 新增 1（docx 落地）、重 build 修改 1、-ws 清理）；make test 全绿（收据）。

任务卡：feature/agent-s0-workspace-overlay。S0-2（fs 联合读/任务级工作区/封存）待授权。

S0-1（提案 §4.4，用户「继续完成下一步」授权）：sandbox 档会话目录由直写改为冻结基底 overlay—— - 执行前硬链接冻结 + sha256 基线（.agentx 排除） - 执行期 bwrap overlay 三件套，写入只落私有 upper；超时/中止整体丢弃（半写状态不落地） - 正常退出 CAS 写回（基线一致→原子替换/删除；外部已改→双存 *.conflict-*） - -ws 壳目录用后即清；工具输出尾附变更摘要（模型可见） - 入口 --exec-workspace overlay / AGENT_SYSTEM_EXEC_WORKSPACE（仅 sandbox 后端；缺省行为不变） Evidence: Backend #135/#136 CI success（GATE）；bwrap 集成 3（overlay 往返含 whiteout、超时丢弃、壳清理）+ 单测 4；live 三件套端到端（失败执行零落地→[工作区变更：无]、成功 build 新增 1（docx 落地）、重 build 修改 1、-ws 清理）；make test 全绿（收据）。 任务卡：feature/agent-s0-workspace-overlay。S0-2（fs 联合读/任务级工作区/封存）待授权。
weichen added 5 commits 2026-10-11 02:24:17 +00:00
Record the task card for feature-agent-s0-workspace-overlay a60a975b2c 
Why: establish the authorized task workspace and its initial baseline.

Evidence: preserved precheck receipt in .task/feature-agent-s0-workspace-overlay.md; R0=73c901fa341a3653d6e0826d0da3497507995482.

Impact: task metadata only; the feature workspace starts at 73c901fa34.

Refs: .task/feature-agent-s0-workspace-overlay.md
Pin backend with the S0 workspace overlay 55fbe2651d
Pin backend bd4b3bc (S0 overlay with shell cleanup) 8faac84195
Record the S0-1 verification evidence and finalize the card b332b2e9ee
Record the sync checkpoint
ci / test (pull_request) Failing after 1m44s
Details
e46f34065e 
Why: bind the task validation checkpoint to the latest integration baseline.

Evidence: SELF recursive component checks; sync_base=73c901fa341a3653d6e0826d0da3497507995482; candidate=b332b2e9ee22690de76cb82fa54e74b3442d1dd0.

Impact: task metadata only.

Refs: .task/feature-agent-s0-workspace-overlay.md
weichen added 1 commit 2026-10-11 02:24:20 +00:00
Fill the task record PR link
ci / test (pull_request) Successful in 2m20s
Details
cc57c1f4dd
weichen merged commit 92ca774e94 into main 2026-10-11 02:29:02 +00:00
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Reference: weichen/Agent-System-Dev#318