feat: process now button

frontend/components/letterfeed/Header.tsx

@@ -1,6 +1,10 @@
+"use client"
+
 import { Button } from "@/components/ui/button"
-import { Plus, Settings } from "lucide-react"
+import { processEmails } from "@/lib/api"
+import { Mail, Plus, Settings } from "lucide-react"
 import Image from "next/image"
+import { toast } from "sonner"
 
 interface HeaderProps {
   onOpenAddNewsletter: () => void
@@ -8,13 +12,35 @@ interface HeaderProps {
 }
 
 export function Header({ onOpenAddNewsletter, onOpenSettings }: HeaderProps) {
+  const handleProcessEmails = async () => {
+    try {
+      await processEmails()
+      toast.success("Email processing started successfully!")
+    } catch (error) {
+      const message =
+        error instanceof Error
+          ? error.message
+          : "An unexpected error occurred."
+      console.error(error)
+      toast.error(message)
+    }
+  }
+
   return (
     <div className="flex items-center justify-between mb-8">
       <div className="flex items-center gap-4">
-        <Image src="/logo.png" alt="LetterFeed Logo" width={48} height={48} className="rounded-lg" />
+        <Image
+          src="/logo.png"
+          alt="LetterFeed Logo"
+          width={48}
+          height={48}
+          className="rounded-lg"
+        />
         <div>
           <h1 className="text-3xl font-bold text-gray-900">LetterFeed</h1>
-          <p className="text-gray-600 mt-1">Read your newsletters as RSS feeds!</p>
+          <p className="text-gray-600 mt-1">
+            Read your newsletters as RSS feeds!
+          </p>
         </div>
       </div>
 
@@ -24,6 +50,11 @@ export function Header({ onOpenAddNewsletter, onOpenSettings }: HeaderProps) {
           Add Newsletter
         </Button>
 
+        <Button variant="outline" onClick={handleProcessEmails}>
+          <Mail className="w-4 h-4 mr-2" />
+          Process Now
+        </Button>
+
         <Button variant="outline" onClick={onOpenSettings}>
           <Settings className="w-4 h-4 mr-2" />
           Settings