docs(subagent): land the continuable-subagents note and supersede its predecessors

Moves the RFC to implemented/, restates it as current-state prose under the
implemented note format, and records what the Task-backed continuable-subagents
note and the two subagent-service simplification notes retain versus what this
record replaces.
This commit is contained in:
Dudu-0223
2026-07-30 13:40:45 +08:00
committed by Tianyi Cui
parent 4e7a5f19cf
commit 72f8f47335
13 changed files with 48 additions and 40 deletions
@@ -4,7 +4,7 @@ Status: implemented
English | [中文](2026-07-21-continuable-background-subagents.zh.md)
The service-placement and provider-capability policy in this record are superseded by [Merge subagent control into the subagent service](../simplification/2026-07-26-merge-subagent-control-service.md) and [Intent-named subagent continuation operations](../simplification/2026-07-27-intent-named-subagent-continuation-operations.md). The continuation, persistence, Task, routing, authorization, and durability semantics remain in force.
This record is superseded by [Continuable subagents](2026-07-28-continuable-subagent-conversations.md), which replaces its Task-backed activation model, routing, cancellation, and durability semantics with one durable Session plus at most one process-local Activation. Its service-placement and provider-capability policy were already superseded by [Merge subagent control into the subagent service](../simplification/2026-07-26-merge-subagent-control-service.md) and [Intent-named subagent continuation operations](../simplification/2026-07-27-intent-named-subagent-continuation-operations.md). Only the durable child-session and descriptor rationale remains in force.
## Problem