Add RRuleDisplay component and clean up unused imports

- Create new RRuleDisplay component for better recurrence rule formatting
- Replace Badge with RRuleDisplay in EventCard for improved UX
- Remove unused imports across multiple files (CalendarEvent, Badge, Card components)
- Remove unused catch parameter in ai-event route

src/app/api/ai-summary/route.ts

@@ -1,5 +1,4 @@
 import { NextResponse } from "next/server";
-import type { CalendarEvent } from "@/lib/types";
 
 export async function POST(request: Request) {
 	try {