refactor ai event creation into a promise toast

src/app/page.tsx

@@ -138,6 +138,8 @@ export default function HomePage() {
   const handleAiCreate = async () => {
     if (!aiPrompt.trim()) return
     setAiLoading(true)
+
+    const promise = (): Promise<{ message: string }> => new Promise(async (resolve, reject) => {
       try {
         const res = await fetch('/api/ai-event', {
           method: 'POST',
@@ -146,8 +148,10 @@ export default function HomePage() {
         })
 
         if (res.status === 401) {
-        toast.info('Please sign in to use AI features.')
           setAiLoading(false)
+          reject({
+            message: 'Please sign in to use AI features.'
+          })
           return
         }
 
@@ -168,6 +172,10 @@ export default function HomePage() {
             setAiPrompt("")
             setDialogOpen(true)
             setRecurrenceRule(ev.recurrenceRule || undefined)
+            resolve({
+              message: 'Event has been created!'
+            })
+
           } else {
             // Save them all directly to DB
             for (const ev of data) {
@@ -184,16 +192,34 @@ export default function HomePage() {
             setAiPrompt("")
             setSummary(`Added ${data.length} AI-generated events.`)
             setSummaryUpdated(new Date().toLocaleString())
+            resolve({
+              message: 'Event has been created!'
+            })
           }
         } else {
-        toast.error('AI did not return event data.')
+          reject({
+            message: 'AI did not return event data.'
+          })
         }
       } catch (err) {
         console.error(err)
-      toast.error('Error from AI service.')
-    } finally {
-      setAiLoading(false)
+        reject({
+          message: 'Error from AI service.'
+        })
       }
+    })
+
+    toast.promise(promise, {
+      loading: "Generating event...",
+      success: ({ message }) => {
+        return message
+      },
+      error: ({ message }) => {
+        return message
+      }
+    })
+
+    setAiLoading(false)
   }
 
   // AI Summarize Events