Phase 2.3: Agent Management Module

Backend:
- agents_admin.py: 10 REST API endpoints for AI Agent CRUD
  - GET/POST/PUT/DELETE /admin/agents/
  - Stats overview, reviews, available skills/models
  - Agent = MarketApp with type='agent'

Frontend:
- Agents.tsx: Full admin page (780 lines)
  - Stats dashboard, filterable table, create/edit modal
  - Config: system prompt, temperature, model, linked skills
- api/index.ts: 10 new Agent API methods
- App.tsx: /admin/agents route
- AdminLayout.tsx: Agent management nav item

frontend/src/types/index.ts

@@ -222,12 +222,17 @@ export interface ModelProvider {
   protocol: string;
   apiKey: string;
   apiBaseUrl: string;
+  // Support both snake_case and camelCase
+  api_key?: string;
+  api_base_url?: string;
   createdAt: string;
   updatedAt?: string;
 }
 
+// AIModel: supports both camelCase (TypeScript) and snake_case (from backend API)
 export interface AIModel {
   id: string;
+  // camelCase (TypeScript convention)
   providerId: string;
   providerName?: string;
   name: string;
@@ -238,8 +243,22 @@ export interface AIModel {
   status: 'free' | 'paid';
   pricePerMillionTokens: number;
   isEnabled: boolean;
+  isDefault?: boolean;
   totalCalls?: number;
   totalTokens?: number;
+  createdAt?: string;
+  updatedAt?: string;
+  // snake_case (from backend)
+  provider_id?: string;
+  provider_name?: string;
+  api_key?: string;
+  price_per_million_tokens?: number;
+  is_enabled?: boolean;
+  is_default?: boolean;
+  total_calls?: number;
+  total_tokens?: number;
+  created_at?: string;
+  updated_at?: string;
 }
 
 export interface ProtocolDef {