fix(cli): save and load per-agent model selection

[shssoichiro]

Context

Fixes #6220

Implementation

Setting the model per-agent is already supported, but is not persisted across sessions. This change includes the selected model when we save and load the configuration so that it is persisted properly.

Screenshots

Screencast_20260224_120010.webm

How to Test

• Set a custom model for each agent in the CLI
• Exit the CLI
• Reload the CLI
• The custom model per agent should still be set

[kilo-code-bot]

Code Review Summary

Status: No Issues Found | Recommendation: Merge

Files Reviewed (1 files)

• packages/opencode/src/cli/cmd/tui/context/local.tsx

[github-actions]

The following comment was made by an LLM, it may be inaccurate:

Found a potential duplicate:

#12274 - fix: Model Change persistes across sessions
anomalyco/opencode#12274

This PR appears to directly address the same issue — persisting model selection across sessions. It's likely the same fix or a related attempt at solving this problem.

[shssoichiro]

#12274 appears to be related to a different issue, regarding sub-agents.