fix(subagent): keep Codex provider opt-in

apps/cli/config/base.cordis.yml

@@ -254,9 +254,6 @@
   config:
     providerName: fork
 
-- id: subagent-codex
-  name: '@deepseek-ai/dsh-subagent-codex'
-
 # Continuable background children are selected per delegation tool. The
 # separately loaded follow-up tool registers the one global `send_message`.
 - id: tool-subagent-control
@@ -279,14 +276,6 @@
     toolName: subagent_fork
     backgroundMode: continuable
 
-- id: tool-subagent-codex
-  name: '@deepseek-ai/dsh-tool-subagent'
-  config:
-    provider: codex
-    toolName: subagent_codex
-    enableRunInBackground: false
-    maxDepth: 'provider-managed'
-
 # Optional direct-child return channel; absent from roots and one-shot agents.
 - id: tool-subagent-report
   name: '@deepseek-ai/dsh-tool-subagent-report'