docs(tasks): clarify admission lifecycle

2026-08-11 23:13:35 +08:00
parent e3ac9e85e5
commit 38922cbbb9
14 changed files with 34 additions and 19 deletions
@@ -25,7 +25,7 @@ Long-running tools are producers. `dsh-tool-bash` adapts a `BashProcess` into in

 The literal types live on the [tasks subsystem page](../../../../docs/subsystems/tasks.md). A producer calls `ctx.tasks.start()` with a kind, label, optional owning `Agent`, optional positive `outputLimitBytes`, and a `run()` function. The runtime completes all failable preflight work before calling `run()` and invokes it once. After `run()` returns hooks, registration commits without another failable step; a producer cannot start work that lacks a collectable task id.

-The process-local provider also owns bounded admission. Its positive-safe-integer `maxConcurrentTasksPerOwner` config defaults to `10`; `start()` derives each exact `Agent` object's active count from `running` and `stopping` records, while every unowned task shares one service bucket. Capacity rejection occurs before `run()` and id allocation, and producer `done` settlement is the only event that releases a stopping task's place. The provider does not queue, preempt, or retain a second mutable count.
+The process-local provider also owns bounded admission, whose rationale is recorded in the [bounded background task admission decision](../bug-fix/2026-08-11-bounded-background-task-admission.md). Its positive-safe-integer `maxConcurrentTasksPerOwner` config defaults to `10`; `start()` derives each exact `Agent` object's active count from `running` and `stopping` records, while every unowned task shares one service bucket. Capacity rejection occurs before `run()` and id allocation, and producer `done` settlement is the only event that releases a stopping task's place. The provider does not queue, preempt, or retain a second mutable count.

 `outputLimitBytes` is producer-owned presentation policy, not a registry buffer. The registry validates and projects it unchanged into `TaskSnapshot`; generic control APIs apply the cap to complete model-facing output after adding their own status or notice metadata. Omitting it preserves the existing controller behavior, so the runtime does not impose a hidden default on unrelated producer families.