feat(client): inject slot declaration lifetimes

packages/client/ui-subagent/src/client/index.ts

@@ -36,7 +36,7 @@ export type {
 } from './SubagentReadOnlyComposer.tsx'
 
 /** Required services for references, conversation slots, and session navigation. */
-export const inject = ['slash', 'sessions', 'conversation', 'slots', 'locale']
+export const inject = ['slash', 'sessions', 'slots', 'locale']
 
 /** Claim the composer for one-shot history or an unavailable continuation owner. */
 function selectReadOnlySubagent(owner: ComposerChainProps): SubagentReadOnlyMatch | null {
@@ -103,7 +103,8 @@ export function apply(ctx: ClientContext): void {
       sessions.setSubagentCatalogOpen(parentSessionId, open)
     },
   })
-  ctx.effect(
+  ctx.slots.inject(
+    'conversation.session.header.actions',
     () => ctx.slots.register({
       name: 'conversation.session.header.actions',
       id: 'subagent-catalog',
@@ -111,15 +112,14 @@ export function apply(ctx: ClientContext): void {
       locale: NS,
       inject: catalogActions,
     }, SubagentCatalogAction),
-    'ui-subagent: lazy descendant catalog action',
   )
-  ctx.effect(
+  ctx.slots.inject(
+    'conversation.composer',
     () => ctx.slots.register({
       name: 'conversation.composer',
       priority: -10,
       locale: NS,
       select: selectReadOnlySubagent,
     }, SubagentReadOnlyComposer),
-    'ui-subagent: read-only addressed composer',
   )
 }