v2.7.2

Fixed

• ChatGPT login detection - Accept chunked NextAuth session cookies such as __Secure-next-auth.session-token.0 during login checks, matching ChatGPT's current cookie layout.
• ChatGPT response extraction - Improved assistant turn detection and completion polling so responses are still captured when ChatGPT's DOM structure shifts or thinking output renders through newer turn containers.
• ChatGPT model selection - Updated surf chatgpt --model to match the current ChatGPT model menu and select Instant, Thinking, and Pro reliably.
• ChatGPT error reporting - Preserve /backend-api/me login check failures instead of downgrading them to a generic ChatGPT login required error.