refactor: remove all legacy files

+ comment/delete things that haven't yet migrated to mantine

inertia/components/home/feature.tsx

@@ -0,0 +1,48 @@
+import { Text, ThemeIcon, rem } from '@mantine/core';
+import { useTranslation } from 'react-i18next';
+import { AiFillFolderOpen } from 'react-icons/ai';
+import { FaUser } from 'react-icons/fa';
+import { IoIosLink, IoIosSearch, IoIosShareAlt } from 'react-icons/io';
+import { IoExtensionPuzzleOutline } from 'react-icons/io5';
+import { featureList } from '~/components/home/feature_list';
+
+type FeatureName = (typeof featureList)[number];
+
+function getIcon(name: FeatureName) {
+	switch (name) {
+		case 'collection':
+			return AiFillFolderOpen;
+		case 'link':
+			return IoIosLink;
+		case 'search':
+			return IoIosSearch;
+		case 'extension':
+			return IoExtensionPuzzleOutline;
+		case 'share':
+			return IoIosShareAlt;
+		case 'contribute':
+			return FaUser;
+	}
+}
+
+interface FeatureProps {
+	name: FeatureName;
+}
+
+export function Feature({ name: featureName }: FeatureProps) {
+	const { t } = useTranslation('about');
+	const Icon = getIcon(featureName);
+	return (
+		<div>
+			<ThemeIcon variant="light" size={40} radius={40}>
+				<Icon style={{ width: rem(18), height: rem(18) }} />
+			</ThemeIcon>
+			<Text mt="sm" mb={7}>
+				{t(`${featureName}.title`)}
+			</Text>
+			<Text size="sm" c="dimmed" lh={1.6}>
+				{t(`${featureName}.text`)}
+			</Text>
+		</div>
+	);
+}