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fix(session): persist the delegation depth in the session header

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A subagent child's recursion depth lived only in runtime AgentOptions,
so a persisted child came back from resume counted as top-level and
maxDepth stopped binding after every restart. Add
SessionHeader.delegationDepth, round-trip it through the JSONL and
SQLite backends (SQLite schema v5), restore it on agent-loop resume,
and write it when the in-process backends create a child. The seam now
owns the shared depth vocabulary (delegationDepthOf): the persisted
header is authoritative and monotone — runtime options may deepen it
but never lower it.
This commit is contained in:
Yichen Jiang
2026-07-19 17:20:36 +08:00
parent e05e7a0870
commit 0d00106fa8
29 changed files with 229 additions and 106 deletions
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website/zh-CN/api/harness/subagents.md
+5 -5
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@@ -6,7 +6,7 @@
Named provider registry and capability-checked start surface.
[Source](https://github.com/deepseek-harness/deepseek-harness/blob/master/packages/subagent/subagent/src/index.ts#L153)
[Source](https://github.com/deepseek-harness/deepseek-harness/blob/master/packages/subagent/subagent/src/index.ts#L179)
### ctx.subagents.registerProvider(provider)
@@ -27,7 +27,7 @@ Register a provider under its name. Registration is effect-scoped and HMR safe;
**Returns** the exact Cordis effect disposer.
[Source](https://github.com/deepseek-harness/deepseek-harness/blob/master/packages/subagent/subagent/src/index.ts#L167)
[Source](https://github.com/deepseek-harness/deepseek-harness/blob/master/packages/subagent/subagent/src/index.ts#L193)
### ctx.subagents.getProvider(name)
@@ -46,7 +46,7 @@ Look up a provider by name.
**Returns** the provider, or undefined when absent.
[Source](https://github.com/deepseek-harness/deepseek-harness/blob/master/packages/subagent/subagent/src/index.ts#L190)
[Source](https://github.com/deepseek-harness/deepseek-harness/blob/master/packages/subagent/subagent/src/index.ts#L216)
### ctx.subagents.list()
@@ -62,7 +62,7 @@ List registered provider names in insertion order.
**Returns** the registered names.
[Source](https://github.com/deepseek-harness/deepseek-harness/blob/master/packages/subagent/subagent/src/index.ts#L198)
[Source](https://github.com/deepseek-harness/deepseek-harness/blob/master/packages/subagent/subagent/src/index.ts#L224)
### ctx.subagents.start(name, request)
@@ -86,4 +86,4 @@ Establish a ready child on the named provider. Capability and semantic checks ru
**Returns** the ready holder-owned run.
[Source](https://github.com/deepseek-harness/deepseek-harness/blob/master/packages/subagent/subagent/src/index.ts#L211)
[Source](https://github.com/deepseek-harness/deepseek-harness/blob/master/packages/subagent/subagent/src/index.ts#L237)