Refactor event and fight repositories to use numeric IDs for groups; update datetime picker input handling; add new generator components for event fights and group phases.

src/components/admin/pages/generate/DragAcceptor.svelte

@@ -18,12 +18,14 @@
   -->
 
 <script lang="ts">
-    import {createEventDispatcher} from "svelte";
-  interface Props {
-    children?: import('svelte').Snippet;
-  }
+    import { Card } from "@components/ui/card";
 
-  let { children }: Props = $props();
+    interface Props {
+        children?: import("svelte").Snippet;
+        ondrop: (event: DragEvent) => void;
+    }
+
+    let { children, ondrop }: Props = $props();
 
     let dragover = $state(false);
 
@@ -32,19 +34,16 @@
         dragover = true;
     }
 
-    const dispatch = createEventDispatcher();
-
     function handleDrop(ev: DragEvent) {
         ev.preventDefault();
         dragover = false;
-        dispatch("drop", ev);
+        ondrop(ev);
     }
 </script>
 
-<div class="w-56 bg-gray-800 p-4 rounded" class:border={dragover} class:m-px={!dragover} ondrop={handleDrop}
-     ondragover={handleDragOver} ondragleave={() => dragover = false} role="none">
+<Card class="w-56 p-4 rounded m-px {dragover ? 'border-white' : ''}" ondrop={handleDrop} ondragover={handleDragOver} ondragleave={() => (dragover = false)} role="none">
     {@render children?.()}
-</div>
+</Card>
 
 <style>
     div {