chore: fix eslint errors introduced across phases 1-3

apps/next/src/components/agent-workspace/agent-workspace-shell.tsx

@@ -1,6 +1,5 @@
 'use client';
 
-import type { FunctionReturnType } from 'convex/server';
 import type { CSSProperties, PointerEvent as ReactPointerEvent } from 'react';
 import { useCallback, useEffect, useState } from 'react';
 import { useMutation, useQuery } from 'convex/react';
@@ -61,10 +60,7 @@ type PendingOverwrite = {
 };
 
 export const AgentWorkspaceShell = ({ jobId }: { jobId: Id<'agentJobs'> }) => {
-  const job = useQuery(api.agentJobs.get, { jobId }) as
-    | FunctionReturnType<typeof api.agentJobs.get>
-    | null
-    | undefined;
+  const job = useQuery(api.agentJobs.get, { jobId });
   const messages =
     useQuery(
       api.agentJobs.listMessages,