refactor(frontend) : reorganize components into subdirectories and fix imports

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

frontend/components/ui/DataTable.vue

@@ -0,0 +1,77 @@
+<template>
+    <div class="mt-6 overflow-x-auto rounded-lg border border-neutral-200">
+        <table class="w-full text-left text-sm">
+            <thead class="border-b border-neutral-200 bg-neutral-50">
+                <tr>
+                    <th
+                        v-for="col in columns"
+                        :key="col.key"
+                        class="px-4 py-3 font-semibold text-neutral-700"
+                    >
+                        {{ col.label }}
+                    </th>
+                    <th v-if="deletable" class="px-4 py-3 font-semibold text-neutral-700">
+                        Actions
+                    </th>
+                </tr>
+            </thead>
+            <tbody>
+                <tr
+                    v-for="item in items"
+                    :key="item.id"
+                    class="cursor-pointer border-b border-neutral-100 hover:bg-neutral-50"
+                    @click="$emit('row-click', item)"
+                >
+                    <td
+                        v-for="col in columns"
+                        :key="col.key"
+                        class="px-4 py-3"
+                        :class="[col.class, { 'font-semibold text-primary-500': col.primary }]"
+                    >
+                        <slot :name="`cell-${col.key}`" :item="item" :value="item[col.key]">
+                            {{ item[col.key] }}
+                        </slot>
+                    </td>
+                    <td v-if="deletable" class="px-4 py-3">
+                        <button
+                            class="text-red-500 hover:text-red-700"
+                            @click.stop="$emit('delete', item)"
+                        >
+                            <Icon name="mdi:delete-outline" size="20" />
+                        </button>
+                    </td>
+                </tr>
+                <tr v-if="items.length === 0 && !loading">
+                    <td
+                        :colspan="columns.length + (deletable ? 1 : 0)"
+                        class="px-4 py-8 text-center text-neutral-400"
+                    >
+                        {{ emptyMessage }}
+                    </td>
+                </tr>
+            </tbody>
+        </table>
+    </div>
+</template>
+
+<script setup lang="ts">
+export interface DataTableColumn {
+    key: string
+    label: string
+    primary?: boolean
+    class?: string
+}
+
+defineProps<{
+    columns: DataTableColumn[]
+    items: Record<string, any>[]
+    loading?: boolean
+    emptyMessage?: string
+    deletable?: boolean
+}>()
+
+defineEmits<{
+    (e: 'row-click', item: any): void
+    (e: 'delete', item: any): void
+}>()
+</script>