codex-http-client

Low-level HTTP transport shared by Codex crates.

• Defines the request, response, streaming, and transport types used for outbound HTTP calls.
• Owns the reqwest implementation, custom CA handling, and ChatGPT Cloudflare cookie policy.
• Resolves system, PAC/WPAD, environment, and direct proxy routes for supported clients.

Higher-level retry, SSE, and request telemetry policy remains in codex-client.