feat(web): rewrite subagent conversations for FIFO activation

packages/client/ui-question/tests/plan-review-panel.spec.tsx

@@ -29,6 +29,7 @@ const seatOver = (dict: Record<string, string>, common: Record<string, string>):
 /** Framework standard-kit stubs: the panel consumes only the locale seat. */
 const kit = {
   sessionId: SID,
+  session: undefined,
   useSession: (() => { throw new Error('unused') }) as unknown as SnapshotSelectorHook<ConversationSnapshot>,
   useSessions: (() => { throw new Error('unused') }) as unknown as SnapshotSelectorHook<SessionListState>,
   useWorkspaces: (() => { throw new Error('unused') }) as unknown as SnapshotSelectorHook<WorkspaceListState>,

packages/client/ui-question/tests/question-composer.spec.tsx

@@ -26,7 +26,7 @@ const seatOver = (dict: Record<string, string>, common: Record<string, string>):
  *  the composed props type mandates delivery of the rest (framework hooks are
  *  plain stubs per the client testing discipline). */
 const kit = {
-  subagentReadOnly: false,
+  session: undefined,
   sessionId: SID,
   useSession: (() => { throw new Error('unused') }) as unknown as SnapshotSelectorHook<ConversationSnapshot>,
   useSessions: (() => { throw new Error('unused') }) as unknown as SnapshotSelectorHook<SessionListState>,