feat(intelligence): complete migration to Rust backend

- Unify all intelligence modules to use intelligenceClient
- Delete legacy TS implementations (agent-memory, reflection-engine, heartbeat-engine, context-compactor, agent-identity, memory-index)
- Update all consumers to use snake_case backend types
- Remove deprecated llm-integration.test.ts

This eliminates code duplication between frontend and backend, resolves
localStorage limitations, and enables persistent intelligence features.

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

desktop/src/lib/skill-adapter.ts

@@ -191,3 +191,17 @@ export function getCategories(skills: UISkillInfo[]): string[] {
   }
   return Array.from(categories);
 }
+
+// === Aliases for backward compatibility ===
+
+/**
+ * Alias for UISkillInfo for backward compatibility
+ */
+export type SkillDisplay = UISkillInfo;
+
+/**
+ * Alias for adaptSkills for catalog adaptation
+ */
+export function adaptSkillsCatalog(skills: ConfigSkillInfo[]): UISkillInfo[] {
+  return adaptSkills(skills);
+}