Replace front proxy with new SvelteKit frontend app

- Remove the old Hono/Bun proxy server
- Add the new `apps/frontend` SvelteKit scaffold and telemetry hook

apps/frontend/src/lib/components/ui/calendar/calendar-heading.svelte

@@ -0,0 +1,16 @@
+<script lang="ts">
+	import { Calendar as CalendarPrimitive } from "bits-ui";
+	import { cn } from "$lib/utils.js";
+
+	let {
+		ref = $bindable(null),
+		class: className,
+		...restProps
+	}: CalendarPrimitive.HeadingProps = $props();
+</script>
+
+<CalendarPrimitive.Heading
+	bind:ref
+	class={cn("px-(--cell-size) text-sm font-medium", className)}
+	{...restProps}
+/>