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>

packages/shared-types/src/index.ts

@@ -88,6 +88,7 @@ export interface TemplateCard {
 export interface KolWorkspaceCard {
   subscription_prompt_id: number;
   granted_at: string;
+  updated_at: string;
   prompt_name: string;
   platform_hint: string | null;
   package_name: string;
@@ -1183,6 +1184,11 @@ export interface KolVariableDefinition {
   required?: boolean;
   placeholder?: string;
   options?: string[];    // only for select / checkbox
+  max_length?: number;   // only for input / textarea
+  default_value?: string; // only for input / textarea
+  min_value?: number;    // only for number
+  max_value?: number;    // only for number
+  default_number?: number; // only for number
 }
 
 export interface KolSchemaJson {