de39f1f493
Fixes #39 - Added headers field to Model type (provider and model level) - Model headers override provider headers when merged - Supported in all APIs: - Anthropic: defaultHeaders - OpenAI (completions/responses): defaultHeaders - Google: httpOptions.headers - Enables bypassing Cloudflare bot detection for proxied endpoints - Updated documentation with examples Also fixed: - Mistral/Chutes syntax error (iif -> if) - process.env.ANTHROPIC_API_KEY bug (use delete instead of = undefined)