Build agent can't find plan file #8435

Description

After upgrading this morning to v1.1.19, the build agent is getting blocked looking for a {{plan}} file.

When this happens, the build agent stops and asks me where the file is, and the majority of the time refuses to continue if I say that I don't know where it is, or that it should continue without one.

In the few times that it's continued without the plan file, it's clear that it did not, in fact, have the plan file. The changes that it made was somewhat related to the conversation but certainly wasn't following the plan.

Plugins

None

OpenCode version

1.1.19

Steps to reproduce

1. Upgrade to v1.1.19.
2. Use the plan agent (I'm not sure this is necessary).
3. Switch to the build agent.
4. Tell 'em to go.

Screenshot and/or share link

Operating System

macOS 26.1

Terminal

Ghostty 1.2.3