copy: replace agent-architecture chat starter with job-oriented alternative

Replace "Which specialist should I start with?" with "What's the first
marketing deliverable I should create?" to reinforce the job-first mental
model. Update the chat empty state subtitle to emphasize deliverables and
outputs over generic strategy language.

Author: marian2js

apps/desktop/src/features/chat/components/ChatWorkspace.tsx

@@ -2,7 +2,6 @@ import { Chat, useChat } from "@ai-sdk/react";
 import {
   ArrowRightIcon,
   BotIcon,
-  CalendarIcon,
   CopyIcon,
   CrosshairIcon,
   FileTextIcon,
@@ -230,7 +229,7 @@ interface ChatWorkspaceProps {
 
 const DEFAULT_STARTER_PROMPTS: { icon: LucideIcon; text: string }[] = [
   { icon: TrendingUpIcon, text: "What's the highest-leverage marketing move for my company right now?" },
-  { icon: CalendarIcon, text: "Which specialist should I start with?" },
+  { icon: FileTextIcon, text: "What's the first marketing deliverable I should create?" },
   { icon: CrosshairIcon, text: "Summarize opportunities across all marketing channels." },
 ];
 
@@ -721,7 +720,7 @@ function ChatSessionView({
                 <p className="mx-auto max-w-sm text-[13px] leading-relaxed text-muted-foreground/50">
                   {effectiveSpecialistMeta
                     ? effectiveSpecialistMeta.role
-                    : "Ask your AI CMO about marketing strategy, growth, and content."}
+                    : "Get marketing deliverables, strategy recommendations, and competitive insights."}
                 </p>
               </div>
             </div>

apps/desktop/src/features/chat/components/chat-starter-prompts-scoping.test.ts

@@ -66,8 +66,8 @@ void test("DEFAULT_STARTER_PROMPTS contains generic CMO starters", () => {
     "Default starters must include generic CMO prompt about highest-leverage move",
   );
   assert.ok(
-    src.includes("Which specialist should I start with"),
-    "Default starters must include prompt about which specialist to start with",
+    src.includes("first marketing deliverable I should create"),
+    "Default starters must include job-oriented prompt about first deliverable",
   );
   assert.ok(
     src.includes("Summarize opportunities"),