🚨 fix: resolve all linter and typecheck warnings across codebase

src/components/ics-file-picker.tsx

@@ -47,7 +47,6 @@ export function IcsFilePicker({
 				accept=".ics"
 				onChange={handleFileChange}
 				className="hidden"
-				aria-hidden="true"
 			/>
 			<Button
 				onClick={handleButtonClick}

src/components/rrule-display.tsx

@@ -41,8 +41,8 @@ export function RRuleDisplayDetailed({
 
 				{showBadges && details.length > 0 && (
 					<div className="flex flex-wrap gap-1">
-						{details.map((detail, index) => (
-							<Badge key={index} variant="outline" className="text-xs">
+						{details.map((detail) => (
+							<Badge key={detail} variant="outline" className="text-xs">
 								{detail}
 							</Badge>
 						))}
@@ -159,7 +159,7 @@ function formatRRuleToHuman(rule: RecurrenceRule): string {
 				const [, num, dayCode] = match;
 				const dayName = dayNames[dayCode as keyof typeof dayNames];
 				if (num) {
-					const ordinal = getOrdinal(parseInt(num));
+					const ordinal = getOrdinal(parseInt(num, 10));
 					return `${ordinal} ${dayName}`;
 				}
 				return dayName;

src/components/sign-in.tsx

@@ -13,7 +13,7 @@ export default function SignIn() {
 		try {
 			await signOut();
 			router.push("/");
-		} catch (_error) {
+		} catch {
 			toast.error("Failed to sign out. Please try again.");
 		}
 	};