chore(ui): add example section in dashboard

frontend/src/app/(dashboard)/dashboard/_components/suggestions/examples.tsx

@@ -0,0 +1,65 @@
+'use client';
+
+import React from 'react';
+import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
+import {
+  BarChart3,
+  Bot,
+  Briefcase,
+  Settings,
+} from 'lucide-react';
+
+type PromptExample = {
+  title: string;
+  query: string;
+  icon: React.ReactNode;
+};
+
+const prompts: PromptExample[] = [
+  {
+    title: 'Market research dashboard',
+    query: 'Create a comprehensive market research dashboard analyzing industry trends, customer segments, and competitive landscape. Include data visualization and actionable recommendations.',
+    icon: <BarChart3 size={16} />,
+  },
+  {
+    title: 'Recommendation engine development',
+    query: 'Develop a recommendation engine for personalized product suggestions. Include collaborative filtering, content-based filtering, and hybrid approaches with evaluation metrics.',
+    icon: <Bot size={16} />,
+  },
+  {
+    title: 'Go-to-market strategy',
+    query: 'Develop a comprehensive go-to-market strategy for a new product. Include market sizing, customer acquisition channels, pricing strategy, and launch timeline.',
+    icon: <Briefcase size={16} />,
+  },
+  {
+    title: 'Data pipeline automation',
+    query: 'Create an automated data pipeline for ETL processes. Include data validation, error handling, monitoring, and scalable architecture design.',
+    icon: <Settings size={16} />,
+  },
+];
+
+export const Examples = ({
+  onSelectPrompt,
+}: {
+  onSelectPrompt?: (query: string) => void;
+}) => {
+  return (
+    <div className="w-full max-w-3xl mx-auto px-4">
+      <div className="grid grid-cols-2 md:grid-cols-2 xl:grid-cols-4 gap-4">
+        {prompts.map((prompt, index) => (
+          <Card
+            key={index}
+            className="group cursor-pointer h-full shadow-none transition-all bg-sidebar hover:bg-neutral-100 dark:hover:bg-neutral-800/60"
+            onClick={() => onSelectPrompt && onSelectPrompt(prompt.query)}
+          >
+            <CardContent className="px-4 pt-0">
+              <p className="group-hover:text-foreground transition-all text-muted-foreground text-sm line-clamp-3">
+                {prompt.query}
+              </p>
+            </CardContent>
+          </Card>
+        ))}
+      </div>
+    </div>
+  );
+};

frontend/src/app/(dashboard)/dashboard/page.tsx

@@ -27,6 +27,7 @@ import { cn } from '@/lib/utils';
 import { useInitiateAgentWithInvalidation } from '@/hooks/react-query/dashboard/use-initiate-agent';
 import { ModalProviders } from '@/providers/modal-providers';
 import { useModal } from '@/hooks/use-modal-store';
+import { Examples } from './_components/suggestions/examples';
 
 const PENDING_PROMPT_KEY = 'pendingAgentPrompt';
 
@@ -105,7 +106,6 @@ function DashboardContent() {
     }
   };
 
-
   useEffect(() => {
     const timer = setTimeout(() => {
       const pendingPrompt = localStorage.getItem(PENDING_PROMPT_KEY);
@@ -133,7 +133,7 @@ function DashboardContent() {
   return (
     <>
       <ModalProviders />
-      <div className="flex flex-col items-center justify-center h-full w-full">
+      <div className="flex flex-col h-screen w-full">
         {isMobile && (
           <div className="absolute top-4 left-4 z-10">
             <Tooltip>
@@ -153,16 +153,37 @@ function DashboardContent() {
           </div>
         )}
 
-        <div className="absolute top-1/2 left-1/2 transform -translate-x-1/2 -translate-y-1/2 w-[650px] max-w-[90%]">
-          <div className="flex flex-col items-center text-center mb-2 w-full">
-            <h1 className={cn('tracking-tight text-4xl font-semibold leading-tight')}>
+        <div className={cn(
+          "flex-1 flex flex-col items-center justify-center px-4",
+          "lg:justify-center",
+          "sm:justify-center sm:px-6"
+        )}>
+          <div className={cn(
+            "flex flex-col items-center text-center w-full",
+            "max-w-full",
+            "sm:max-w-3xl"
+          )}>
+            <h1 className={cn(
+              'tracking-tight font-semibold leading-tight',
+              'text-3xl',
+              'sm:text-4xl'
+            )}>
               Hey
             </h1>
-            <p className="tracking-tight text-3xl font-normal text-muted-foreground/80 mt-2 flex items-center gap-2">
+            <p className={cn(
+              "tracking-tight font-normal text-muted-foreground/80 mt-2 flex items-center gap-2",
+              "text-2xl",
+              "sm:text-3xl sm:mt-3 sm:px-4"
+            )}>
               What would you like Suna to do today?
             </p>
           </div>
           
+          <div className={cn(
+            "w-full mb-2",
+            "max-w-full",
+            "sm:max-w-3xl"
+          )}>
             <ChatInput
               ref={chatInputRef}
               onSubmit={handleSubmit}
@@ -174,6 +195,9 @@ function DashboardContent() {
             />
           </div>
           
+          <Examples onSelectPrompt={setInputValue} />
+        </div>
+
         <BillingErrorAlert
           message={billingError?.message}
           currentUsage={billingError?.currentUsage}
@@ -191,16 +215,18 @@ export default function DashboardPage() {
   return (
     <Suspense
       fallback={
-        <div className="flex flex-col items-center justify-center h-full w-full">
-          <div className="absolute top-1/2 left-1/2 transform -translate-x-1/2 -translate-y-1/2 w-[560px] max-w-[90%]">
-            <div className="flex flex-col items-center text-center mb-10">
-              <Skeleton className="h-10 w-40 mb-2" />
-              <Skeleton className="h-7 w-56" />
+        <div className="flex flex-col h-full w-full">
+          <div className="flex-1 flex flex-col items-center justify-center px-4">
+            <div className={cn(
+              "flex flex-col items-center text-center w-full space-y-8",
+              "max-w-[850px] sm:max-w-full sm:px-4"
+            )}>
+              <Skeleton className="h-10 w-40 sm:h-8 sm:w-32" />
+              <Skeleton className="h-7 w-56 sm:h-6 sm:w-48" />
+              <Skeleton className="w-full h-[100px] rounded-xl sm:h-[80px]" />
+              <div className="block sm:hidden lg:block w-full">
+                <Skeleton className="h-20 w-full" />
               </div>
-
-            <Skeleton className="w-full h-[100px] rounded-xl" />
-            <div className="flex justify-center mt-3">
-              <Skeleton className="h-5 w-16" />
             </div>
           </div>
         </div>

frontend/src/components/thread/chat-input/chat-input.tsx

@@ -230,7 +230,7 @@ export const ChatInput = forwardRef<ChatInputHandles, ChatInputProps>(
           }}
         >
           <div className="w-full text-sm flex flex-col justify-between items-start rounded-lg">
-            <CardContent className="w-full p-1.5 pb-2 bg-sidebar rounded-2xl border">
+            <CardContent className="w-full p-1.5 pb-2 bg-[#efefef] dark:bg-sidebar rounded-2xl border">
               <AttachmentGroup
                 files={uploadedFiles || []}
                 sandboxId={sandboxId}