feat(subagent): continuable background subagents
Implement the continuable background subagents RFC: a durable child session with a series of Task-backed activations, each disposing its run before the Task settles. - dsh-subagent: rename SubagentRun.sendMessage to strict steer, drop run-level resume, add SubagentProvider.resume dispatch via SubagentService.resume, the continuation start field, and the versioned model-hidden subagent/descriptor session event. - dsh-subagent-inprocess/-spawn/-fork: publish the control-allocated child id, append the descriptor inside the initial turn, implement cold resume from the child's own transcript under the live parent scope, and strict running-only steer. - dsh-subagent-control (new): SubagentControlService owning stable child ids, descriptor snapshot/fold/authorization, Task-backed activation with settle-then-dispose ordering, the process-local active-run association, and steer-or-resume sendMessage routing. - dsh-tool-subagent: background route branches on the provider's resume capability (continuable via the control service; one-shot task for ACP), returning both child and task ids. - dsh-tool-subagent-control (new): the globally named send_message tool rendering steered/started routes. Keyless coverage spans Task ownership and disposal ordering, running delivery, cold follow-up, descriptor rejection and rollback, known-id reconstruction, kill during lookup, admission races, and a new subagent-continuable ACP snapshot scenario.
This commit is contained in:
Dudu-0223
@@ -65,11 +65,13 @@ flowchart TD
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subgraph group_subagent["packages/subagent"]
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pkg_subagent["subagent"]
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pkg_subagent_acp["subagent-acp"]
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pkg_subagent_control["subagent-control"]
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pkg_subagent_dsh_sdk["subagent-dsh-sdk"]
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pkg_subagent_fork["subagent-fork"]
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pkg_subagent_inprocess["subagent-inprocess"]
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pkg_subagent_spawn["subagent-spawn"]
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pkg_tool_subagent["tool-subagent"]
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pkg_tool_subagent_control["tool-subagent-control"]
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end
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subgraph group_web["packages/web"]
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pkg_tool_web["tool-web"]
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@@ -890,6 +892,13 @@ flowchart TD
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pkg_subagent_acp --> pkg_session
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pkg_subagent_acp --> pkg_subagent
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pkg_subagent_acp --> pkg_subprocess
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pkg_subagent_control --> pkg_agent
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pkg_subagent_control --> pkg_invariants
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pkg_subagent_control --> pkg_llm
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pkg_subagent_control --> pkg_session
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pkg_subagent_control --> pkg_session_persistence
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pkg_subagent_control --> pkg_subagent
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pkg_subagent_control --> pkg_tasks
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pkg_subagent_inprocess --> pkg_agent
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pkg_subagent_inprocess --> pkg_invariants
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pkg_subagent_inprocess --> pkg_llm
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@@ -899,12 +908,6 @@ flowchart TD
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pkg_subagent_inprocess --> pkg_system_prompt
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pkg_subagent_inprocess --> pkg_tools
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pkg_subagent_inprocess --> pkg_user_approval
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pkg_tool_subagent --> pkg_agent
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pkg_tool_subagent --> pkg_invariants
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pkg_tool_subagent --> pkg_llm
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pkg_tool_subagent --> pkg_subagent
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pkg_tool_subagent --> pkg_tasks
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pkg_tool_subagent --> pkg_tools
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pkg_repository_plugin --> pkg_invariants
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pkg_repository_plugin --> pkg_mcp_client
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pkg_repository_plugin --> pkg_paths
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@@ -1011,6 +1014,18 @@ flowchart TD
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pkg_subagent_spawn --> pkg_invariants
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pkg_subagent_spawn --> pkg_subagent
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pkg_subagent_spawn --> pkg_subagent_inprocess
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pkg_tool_subagent --> pkg_agent
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pkg_tool_subagent --> pkg_invariants
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pkg_tool_subagent --> pkg_llm
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pkg_tool_subagent --> pkg_subagent
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pkg_tool_subagent --> pkg_subagent_control
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pkg_tool_subagent --> pkg_tasks
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pkg_tool_subagent --> pkg_tools
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pkg_tool_subagent_control --> pkg_invariants
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pkg_tool_subagent_control --> pkg_llm
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pkg_tool_subagent_control --> pkg_session
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pkg_tool_subagent_control --> pkg_subagent_control
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pkg_tool_subagent_control --> pkg_tools
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pkg_jsonrpc --> pkg_agent
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pkg_jsonrpc --> pkg_invariants
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pkg_jsonrpc --> pkg_llm
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@@ -1211,8 +1226,8 @@ flowchart TD
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| [`tool-tasks`](../packages/tasks/tool-tasks) | `tasks` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`retention`](../packages/util/retention), [`system-prompt`](../packages/core/system-prompt), [`tasks`](../packages/tasks/tasks), [`tools`](../packages/core/tools) |
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| [`tool-workflow`](../packages/workflow/tool-workflow) | `workflow` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`system-prompt`](../packages/core/system-prompt), [`tools`](../packages/core/tools), [`workflow`](../packages/workflow/workflow) |
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| [`subagent-acp`](../packages/subagent/subagent-acp) | `subagent` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session), [`subagent`](../packages/subagent/subagent), [`subprocess`](../packages/subprocess/subprocess) |
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| [`subagent-control`](../packages/subagent/subagent-control) | `subagent` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session), [`session-persistence`](../packages/session-persistence/session-persistence), [`subagent`](../packages/subagent/subagent), [`tasks`](../packages/tasks/tasks) |
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| [`subagent-inprocess`](../packages/subagent/subagent-inprocess) | `subagent` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`sandbox-policy`](../packages/sandbox/sandbox-policy), [`session`](../packages/core/session), [`subagent`](../packages/subagent/subagent), [`system-prompt`](../packages/core/system-prompt), [`tools`](../packages/core/tools), [`user-approval`](../packages/ui/user-approval) |
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| [`tool-subagent`](../packages/subagent/tool-subagent) | `subagent` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`subagent`](../packages/subagent/subagent), [`tasks`](../packages/tasks/tasks), [`tools`](../packages/core/tools) |
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| [`repository-plugin`](../packages/cordis/repository-plugin) | `cordis` | [`invariants`](../packages/support/invariants), [`mcp-client`](../packages/mcp/mcp-client), [`paths`](../packages/util/paths), [`skill-local`](../packages/skill/skill-local) |
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| [`hooks-claude`](../packages/hooks/hooks-claude) | `hooks` | [`agent`](../packages/core/agent), [`hook-protocol`](../packages/hooks/hook-protocol), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session), [`session-persistence`](../packages/session-persistence/session-persistence), [`subagent`](../packages/subagent/subagent), [`tools`](../packages/core/tools) |
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| [`tui`](../packages/ui/tui) | `ui` | [`agent`](../packages/core/agent), [`agent-loop`](../packages/core/agent-loop), [`commands`](../packages/ui/commands), [`compact`](../packages/compact/compact), [`goal`](../packages/goal/goal), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`llm-retry`](../packages/llm/llm-retry), [`session`](../packages/core/session), [`session-persistence`](../packages/session-persistence/session-persistence), [`session-query`](../packages/session-query/session-query), [`session-reference`](../packages/context/session-reference), [`session-title`](../packages/session-title/session-title), [`skill`](../packages/skill/skill), [`subprocess`](../packages/subprocess/subprocess), [`system-prompt`](../packages/core/system-prompt), [`token-meter`](../packages/llm/token-meter), [`tools`](../packages/core/tools), [`user-interaction`](../packages/ui/user-interaction) |
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@@ -1225,6 +1240,8 @@ flowchart TD
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| [`workflow-workerthread`](../packages/workflow/workflow-workerthread) | `workflow` | [`agent`](../packages/core/agent), [`brand`](../packages/util/brand), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session), [`subagent`](../packages/subagent/subagent), [`tools`](../packages/core/tools), [`workflow`](../packages/workflow/workflow) |
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| [`subagent-fork`](../packages/subagent/subagent-fork) | `subagent` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`session`](../packages/core/session), [`subagent`](../packages/subagent/subagent), [`subagent-inprocess`](../packages/subagent/subagent-inprocess) |
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| [`subagent-spawn`](../packages/subagent/subagent-spawn) | `subagent` | [`invariants`](../packages/support/invariants), [`subagent`](../packages/subagent/subagent), [`subagent-inprocess`](../packages/subagent/subagent-inprocess) |
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| [`tool-subagent`](../packages/subagent/tool-subagent) | `subagent` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`subagent`](../packages/subagent/subagent), [`subagent-control`](../packages/subagent/subagent-control), [`tasks`](../packages/tasks/tasks), [`tools`](../packages/core/tools) |
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| [`tool-subagent-control`](../packages/subagent/tool-subagent-control) | `subagent` | [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session), [`subagent-control`](../packages/subagent/subagent-control), [`tools`](../packages/core/tools) |
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| [`jsonrpc`](../packages/ui/jsonrpc) | `ui` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`llm-deepseek`](../packages/llm/llm-deepseek), [`scope`](../packages/core/scope), [`sdk-protocol`](../packages/sdk/sdk-protocol), [`session`](../packages/core/session), [`subagent`](../packages/subagent/subagent) |
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| [`acp-demo`](../packages/examples/acp-demo) | `examples` | [`acp`](../packages/acp/acp), [`agent-spine-demo`](../packages/examples/agent-spine-demo), [`app-boot`](../packages/ui/app-boot), [`invariants`](../packages/support/invariants), [`session-checkpoint-policy`](../packages/session-persistence/session-checkpoint-policy), [`session-persistence-jsonl`](../packages/session-persistence/session-persistence-jsonl), [`session-query`](../packages/session-query/session-query), [`session-query-sqlite`](../packages/session-query/session-query-sqlite), [`tools`](../packages/core/tools), [`workspace-context`](../packages/context/workspace-context) |
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| [`cli-demo`](../packages/examples/cli-demo) | `examples` | [`agent`](../packages/core/agent), [`agent-spine-demo`](../packages/examples/agent-spine-demo), [`app-boot`](../packages/ui/app-boot), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session), [`session-checkpoint-policy`](../packages/session-persistence/session-checkpoint-policy), [`session-persistence-jsonl`](../packages/session-persistence/session-persistence-jsonl), [`tools`](../packages/core/tools), [`workspace-context`](../packages/context/workspace-context) |
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