refactor(subagent): merge continuation control service

apps/cli/composition.md

@@ -94,8 +94,6 @@ flowchart LR
   cfg --> plugin_tui_subagent_spawn
   plugin_tui_subagent_fork["subagent-fork<br/>@deepseek-ai/dsh-subagent-fork"]
   cfg --> plugin_tui_subagent_fork
-  plugin_tui_subagent_control["subagent-control<br/>@deepseek-ai/dsh-subagent-control"]
-  cfg --> plugin_tui_subagent_control
   plugin_tui_tool_subagent_control["tool-subagent-control<br/>@deepseek-ai/dsh-tool-subagent-control"]
   cfg --> plugin_tui_tool_subagent_control
   plugin_tui_tool_subagent["tool-subagent<br/>@deepseek-ai/dsh-tool-subagent"]
@@ -189,7 +187,6 @@ flowchart LR
 | `subagent` | `@deepseek-ai/dsh-subagent` |
 | `subagent-spawn` | `@deepseek-ai/dsh-subagent-spawn` |
 | `subagent-fork` | `@deepseek-ai/dsh-subagent-fork` |
-| `subagent-control` | `@deepseek-ai/dsh-subagent-control` |
 | `tool-subagent-control` | `@deepseek-ai/dsh-tool-subagent-control` |
 | `tool-subagent` | `@deepseek-ai/dsh-tool-subagent` |
 | `tool-subagent-fork` | `@deepseek-ai/dsh-tool-subagent` |

apps/cli/config/base.cordis.yml

@@ -257,12 +257,8 @@
   config:
     providerName: fork
 
-# Continuable background children: the control service owns durable child ids
-# and Task-backed activations; the control tool registers the one global
-# `send_message` shared by both delegation tools.
-- id: subagent-control
-  name: '@deepseek-ai/dsh-subagent-control'
-
+# Continuable background children are selected per delegation tool. The
+# separately loaded follow-up tool registers the one global `send_message`.
 - id: tool-subagent-control
   name: '@deepseek-ai/dsh-tool-subagent-control'
 
@@ -271,12 +267,14 @@
   config:
     provider: spawn
     toolName: subagent
+    backgroundMode: continuable
 
 - id: tool-subagent-fork
   name: '@deepseek-ai/dsh-tool-subagent'
   config:
     provider: fork
     toolName: subagent_fork
+    backgroundMode: continuable
 
 - id: workflow-workerthread
   name: '@deepseek-ai/dsh-workflow-workerthread'

apps/cli/package.json

@@ -101,7 +101,6 @@
     "@deepseek-ai/dsh-storage-domain": "workspace:^",
     "@deepseek-ai/dsh-storage-json": "workspace:^",
     "@deepseek-ai/dsh-subagent": "workspace:^",
-    "@deepseek-ai/dsh-subagent-control": "workspace:^",
     "@deepseek-ai/dsh-subagent-fork": "workspace:^",
     "@deepseek-ai/dsh-subagent-spawn": "workspace:^",
     "@deepseek-ai/dsh-subprocess-local": "workspace:^",