Can't select plan/build mode on OpenCode Descktop v1.18.1

[iamartinlong]

System: Windows 11 专业版 22H2 22621.3447
OpenCode Desktop：v1.18.1

[github-actions]

This issue does not fully meet our contributing guidelines.

What needs to be fixed:

• No issue template was used. Bug reports must include a Description field with real content explaining what the problem is, Steps to reproduce, and relevant system information.
• The only content is a failed image upload and a brief system info line — there is no description of the actual bug, what you expected to happen, or how to reproduce it.

Please edit this issue to address the above within 2 hours, or it will be automatically closed.

---

This issue also appears to be a duplicate of several existing reports about the Plan/Build mode toggle being missing in v1.18.1. Please check:

• [BUG] Unreachable Agent mode (Plan/Build) switch in lastest version1.18.1, causing opencode desktop app unusable #36995: Plan/Build agent mode switch unreachable in v1.18.1 (Windows)
• [Bug] Desktop App v1.18.1 new layout hides agent (Plan/Build) switching UI #36997: Desktop App v1.18.1 new layout hides Plan/Build switching UI (includes a workaround)
• Desktop app on macOS 1.18.1: session history inaccessible, slash commands broken, Plan/Build toggle disappeared in new layout #37025: Plan/Build toggle disappeared in new layout on macOS v1.18.1
• Build/Plan missing in new layout #37035: Build/Plan missing in new layout

If you believe this was flagged incorrectly, please let a maintainer know.

[iamartinlong]

update： 首页 - 设置 - 通用，拉到最下面， 高级 - 自定义智能体-启用。

[iamartinlong]

真是个糟糕的设计