From c6595bee3ecac86951d234eacf7d2f50ce987566 Mon Sep 17 00:00:00 2001
From: YeonGyu-Kim <code.yeon.gyu@gmail.com>
Date: Wed, 17 Dec 2025 18:27:24 +0900
Subject: [PATCH] Add OmO agent model fallback chain to inherit OpenCode system
 default (#79)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

- Add systemDefaultModel parameter to createBuiltinAgents() function
- Implement model fallback priority chain for OmO agent:
  1. oh-my-opencode.json agents.OmO.model (explicit override)
  2. OpenCode system config.model (system default)
  3. Hardcoded default in omoAgent (fallback)
- Pass config.model from OpenCode settings to createBuiltinAgents()

This fixes issue #79 where users couldn't change agent models via OpenCode config.

🤖 Generated with assistance of OhMyOpenCode (https://github.com/code-yeongyu/oh-my-opencode)
---
 src/agents/utils.ts | 15 ++++++++++++++-
 src/index.ts        |  1 +
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/src/agents/utils.ts b/src/agents/utils.ts
index d33a276..07fca91 100644
--- a/src/agents/utils.ts
+++ b/src/agents/utils.ts
@@ -62,7 +62,8 @@ function mergeAgentConfig(
 export function createBuiltinAgents(
   disabledAgents: BuiltinAgentName[] = [],
   agentOverrides: AgentOverrides = {},
-  directory?: string
+  directory?: string,
+  systemDefaultModel?: string
 ): Record<string, AgentConfig> {
   const result: Record<string, AgentConfig> = {}
 
@@ -84,6 +85,18 @@ export function createBuiltinAgents(
     }
 
     const override = agentOverrides[agentName]
+
+    // Apply model fallback chain for OmO agent:
+    // 1. oh-my-opencode.json agents.OmO.model (highest priority)
+    // 2. OpenCode system config.model (middle priority)
+    // 3. Hardcoded default in omoAgent (lowest priority / fallback)
+    if (agentName === "OmO" && systemDefaultModel && !override?.model) {
+      finalConfig = {
+        ...finalConfig,
+        model: systemDefaultModel,
+      }
+    }
+
     if (override) {
       result[name] = mergeAgentConfig(finalConfig, override)
     } else {
diff --git a/src/index.ts b/src/index.ts
index dc4a877..86ecc47 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -294,6 +294,7 @@ const OhMyOpenCodePlugin: Plugin = async (ctx) => {
         pluginConfig.disabled_agents,
         pluginConfig.agents,
         ctx.directory,
+        config.model,
       );
 
       const userAgents = (pluginConfig.claude_code?.agents ?? true) ? loadUserAgents() : {};