feat: opencode release v1.18.31

[github-actions]

What's Changed

Core

Bugfixes

• Restored ACP session model, effort, mode, and reasoning chunk boundaries when loading, resuming, or forking sessions. (@JacobNWolf)

TUI

Bugfixes

• Show remote config authentication errors during startup and exit with a failure status.

Extensions

Improvements

• Request summarized adaptive thinking for GitHub Copilot models.

Thank you to 4 community contributors:

• @heimoshuiyu:
  • feat(console): add batch workspace block endpoints (#48491)
• @JacobNWolf:
  • fix(acp): restore session options and reasoning boundaries (#48225)
• @R-Taneja:
  • chore(deps): bump @ai-sdk/gateway to 3.0.191 (#48710)
• @MatthewFeroz:
  • fix(ui): add Merge Gateway logo (#42015)

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Full Changelog: https://github.com/anomalyco/opencode/releases/tag/v1.18.31

This PR was created automatically by a scheduled workflow.