feat(kol): expand variable schema and polish KOL UI

- Add length/range limits to KOL variable definitions: max_length and
  default_value for input/textarea, min_value/max_value/default_number
  for number. Backend validates and normalizes; frontend renders limit
  inputs in KolVariableConfig and applies limits at runtime in
  KolDynamicForm.
- Sort workspace cards by most recent prompt/package update, falling
  back to granted_at. Adds updated_at to KolWorkspaceCard.
- Polish TemplatesView, WorkspaceView, and KOL package management UI;
  route create/update/publish/archive/delete toasts through i18n and
  expand package form copy and status labels.
- Remove stale KnowledgeView.vue.patch.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/admin-web/src/components/kol/KolPackageCard.vue

@@ -1,8 +1,11 @@
 <script setup lang="ts">
+import { computed } from "vue";
 import { UserOutlined, TagOutlined, TeamOutlined, ThunderboltOutlined } from "@ant-design/icons-vue";
 import type { KolPackageSummary } from "@geo/shared-types";
 import { useI18n } from "vue-i18n";
 
+import { resolveApiURL } from "@/lib/api";
+
 const props = defineProps<{
   package: KolPackageSummary;
 }>();
@@ -12,6 +15,7 @@ const emit = defineEmits<{
 }>();
 
 const { t } = useI18n();
+const coverUrl = computed(() => resolveApiURL(props.package.cover_url));
 
 function handleClick() {
   emit("click", props.package.id);
@@ -21,8 +25,8 @@ function handleClick() {
 <template>
   <a-card hoverable class="kol-package-card" @click="handleClick">
     <template #cover>
-      <div v-if="props.package.cover_url" class="card-cover-image">
-        <img alt="cover" :src="props.package.cover_url" />
+      <div v-if="coverUrl" class="card-cover-image">
+        <img alt="cover" :src="coverUrl" />
       </div>
       <div v-else class="card-cover-fallback">
         <ThunderboltOutlined class="fallback-icon" />