diff --git a/packages/subagent/subagent/src/activation-setup-registry.ts b/packages/subagent/subagent/src/activation-setup-registry.ts
index 3e8ef4fe61..5681e89863 100644
--- a/packages/subagent/subagent/src/activation-setup-registry.ts
+++ b/packages/subagent/subagent/src/activation-setup-registry.ts
@@ -113,10 +113,6 @@ export class SubagentActivationSetupRegistry {
         // Dispose that escaped record and invalidate the provisioning batch.
         if (isRemoved(registration)) this.release(installation)
       }
-      // Register the scope-disposal release inside the same try so the
-      // setup-rollback catch also covers a hypothetical effect-registration
-      // throw; today effect() cannot reject on a live unpublished scope.
-      childCtx.effect(() => () => { this.releaseChild(childCtx) }, 'subagents.activationSetup()')
     } catch (error: unknown) {
       // Keep the installer failure authoritative, but attempt every rollback.
       try {
@@ -127,6 +123,7 @@ export class SubagentActivationSetupRegistry {
       }
       throw error
     }
+    childCtx.effect(() => () => { this.releaseChild(childCtx) }, 'subagents.activationSetup()')
     return {
       commit: () => {
         if (state.invalidated) {