[OpenCode Go] muse-spark-1.3-contributor gets stuck in repeated Read/Search loops and fails to progress to edits #47992

Description

Description

opencode-go/muse-spark-1.3-contributor repeatedly gets stuck in agentic coding tasks doing Read / Search / Inspect operations without progressing to implementation.

The characteristic pattern is:

1. The model reads/searches relevant files.
2. It explicitly says it now understands the problem or has enough context, for example:
   • "I have enough context"
   • "ready to implement"
   • "next I will fix..."
   • "资料已齐"
   • "准备动手"
3. Instead of moving to Edit / Write / Test, it performs more Read / Search operations.
4. This can continue for many tool calls with little or no state-changing progress.

I have observed the model repeatedly saying that the investigation is complete and that it is ready to implement, and then continuing to read more files.

Reproduces across different agent clients

This is not limited to one client.

I can reproduce the same behavior with:

• ZCode using muse-spark-1.3-contributor through OpenCode Go
• Claude Code v2.1.228 routed through ccSwitch to the same muse-spark-1.3-contributor

Changing the agent client does not remove the behavior.

In my usage, other models used for the same kind of coding/agent workflows normally transition from investigation to edits/tests. The repeated read-only behavior is specifically reproducible with Muse Spark 1.3 Contributor.

Why I do not think this is only a prompt issue

I have reproduced this across different repositories, different coding tasks, and different agent clients.

The prompts were not identical.

The common factor was:

muse-spark-1.3-contributor via OpenCode Go.

For example, in one UI implementation task the model repeatedly reported that it had finished gathering context and was ready to implement, but continued reading files instead of editing.

This is representative of the observed sequence:

read/search files
→ "I now have enough context"
→ read more files
→ "ready to implement"
→ read more files
→ more inspection
→ little or no Edit/Test progress

### Plugins

_No response_

### OpenCode version

_No response_

### Steps to reproduce

_No response_

### Screenshot and/or share link

_No response_

### Operating System

_No response_

### Terminal

_No response_