OpenCode v1.14.40 tightens provider correctness and browser/network reliability

This reads like a correctness release, not a flashy feature drop, and that is exactly what a terminal coding agent needs if it wants to stay trustworthy.

• –Preserves assistant content around signed reasoning blocks, which reduces the risk of losing visible model output in provider-specific flows.
• –Makes 404 behavior consistent for missing sessions and applies CORS before auth, which should help SDK and browser integrations behave more predictably.
• –Adds support for remote `.well-known/opencode` config files, giving orgs a cleaner way to distribute defaults.
• –Includes provider compatibility fixes for Cloudflare AI Gateway and Mistral Medium 3.5 variants, plus safer handling of surrogate characters and overload retries.
• –Desktop and TUI fixes target startup, update, and model-refresh stability rather than user-facing expansion.