Add REST API for querying model data

[i-need-token]

Description

Create a simple REST API that allows querying model data without downloading the full JSON file.

Endpoints

GET /api/models?provider=openai&tool_call=true&min_context=128000
GET /api/models/:id
GET /api/providers
GET /api/stats

Implementation

1. Create api/ directory with a simple Express or Fastify server
2. Deploy to Cloudflare Workers or Vercel for free hosting
3. Add CORS headers for browser access

Acceptance Criteria

• API responds to model queries with filtering
• Individual model lookup by ID
• Provider list endpoint
• Stats endpoint
• CORS enabled
• Deployed and accessible

Context

This would make the catalog queryable from any application without downloading 2.3MB of JSON.