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/i18n/messages/en-US.ts

@@ -79,8 +79,8 @@ const enUS = {
     contentManagement: "Content Management",
     knowledge: "Knowledge Base",
     images: "Image Management",
-    kolMarket: "Refined Templates",
-    kolMarketplace: "Refined Templates",
+    kolMarket: "Refined Template Marketplace",
+    kolMarketplace: "Refined Template Marketplace",
     kolWorkspace: "KOL Workspace",
     kolManage: "Prompt Management",
     kolDashboard: "Dashboard",
@@ -186,6 +186,8 @@ const enUS = {
     },
     manage: {
       title: "KOL Prompt Management",
+      packageTitle: "Packages",
+      promptTitle: "Prompts",
       createPackage: "Create package",
       editPackage: "Edit package",
       publishPackage: "Publish",
@@ -193,8 +195,46 @@ const enUS = {
       createPrompt: "Create prompt",
       activatePrompt: "Go live",
       archivePrompt: "Take offline",
+      confirmDeletePackage: "Are you sure you want to delete this package?",
+      confirmDeletePrompt: "Are you sure you want to delete this prompt?",
+      emptyPromptSelection: "Select a package on the left to view its prompts",
       platformHint: "Platform",
       platformHintDefault: "General",
+      packageStatus: {
+        draft: "Draft",
+        published: "Published",
+        archived: "Archived",
+      },
+      messages: {
+        packageCreated: "Package created successfully",
+        packageUpdated: "Package updated successfully",
+        packagePublished: "Package published successfully",
+        packageArchived: "Package archived successfully",
+        packageDeleted: "Package deleted successfully",
+        promptCreated: "Prompt created successfully",
+        promptActivated: "Prompt is live",
+        promptArchived: "Prompt is offline",
+        promptDeleted: "Prompt deleted successfully",
+      },
+      packageForm: {
+        tags: "Tags",
+        tagsPlaceholder: "Type a tag and press Enter",
+        priceNote: "Price Note",
+        priceNotePlaceholder: "For example: Contact me for pricing",
+        cover: "Cover Image",
+        coverHint: "Choose from the image library or upload a local image and convert it to WebP automatically.",
+        selectCover: "Select cover image",
+        changeCover: "Change cover image",
+        removeCover: "Remove cover image",
+        noCover: "No cover image selected",
+        nameRequired: "Package title is required",
+        coverPicker: {
+          title: "Select package cover",
+          localTab: "Local upload",
+          emptyTitle: "Choose an image for this package cover",
+          emptyHint: "Choose from the image library or upload a local image and convert it to WebP automatically.",
+        },
+      },
       status: {
         draft: "Draft",
         active: "Live",
@@ -221,6 +261,11 @@ const enUS = {
         required: "Required",
         placeholder: "Placeholder",
         options: "Options (comma separated)",
+        maxLength: "Max length",
+        defaultValue: "Default value",
+        minValue: "Min number",
+        maxValue: "Max number",
+        defaultNumber: "Default number",
       },
     },
     dashboard: {