fix: correct config.data.model access pattern and use dynamic config paths

- Fixed delegate-task/tools.ts to access openCodeConfig.data.model instead of openCodeConfig.model
- Updated error messages to use getOpenCodeConfigPaths() for cross-platform paths
- Fixed 12 test mocks to use correct { data: { model: ... } } structure
- Fixes delegation failing with 'requires a default model' even when model is configured

src/plugin-handlers/config-handler.ts

@@ -22,6 +22,7 @@ import { loadAllPluginComponents } from "../features/claude-code-plugin-loader";
 import { createBuiltinMcps } from "../mcp";
 import type { OhMyOpenCodeConfig } from "../config";
 import { log } from "../shared";
+import { getOpenCodeConfigPaths } from "../shared/opencode-config-dir";
 import { migrateAgentConfig } from "../shared/permission-compat";
 import { PROMETHEUS_SYSTEM_PROMPT, PROMETHEUS_PERMISSION } from "../agents/prometheus-prompt";
 import { DEFAULT_CATEGORIES } from "../tools/delegate-task/constants";
@@ -100,9 +101,10 @@ export function createConfigHandler(deps: ConfigHandlerDeps) {
     }
 
     if (!(config.model as string | undefined)?.trim()) {
+      const paths = getOpenCodeConfigPaths({ binary: "opencode", version: null })
       throw new Error(
         'oh-my-opencode requires a default model.\n\n' +
-        'Add this to ~/.config/opencode/opencode.jsonc:\n\n' +
+        `Add this to ${paths.configJsonc}:\n\n` +
         '  "model": "anthropic/claude-sonnet-4-5"\n\n' +
         '(Replace with your preferred provider/model)'
       )

src/tools/delegate-task/tools.test.ts

@@ -125,7 +125,7 @@ describe("sisyphus-task", () => {
       )
       
       // #then returns descriptive error message
-      expect(result).toContain("No default model configured")
+      expect(result).toContain("oh-my-opencode requires a default model")
     })
   })
 
@@ -304,7 +304,7 @@ describe("sisyphus-task", () => {
 
       const mockClient = {
         app: { agents: async () => ({ data: [] }) },
-        config: { get: async () => ({ model: SYSTEM_DEFAULT_MODEL }) },
+        config: { get: async () => ({ data: { model: SYSTEM_DEFAULT_MODEL } }) },
         session: {
           create: async () => ({ data: { id: "test-session" } }),
           prompt: async () => ({ data: {} }),
@@ -363,7 +363,7 @@ describe("sisyphus-task", () => {
       const mockManager = { launch: async () => ({}) }
       const mockClient = {
         app: { agents: async () => ({ data: [] }) },
-        config: { get: async () => ({ model: SYSTEM_DEFAULT_MODEL }) },
+        config: { get: async () => ({ data: { model: SYSTEM_DEFAULT_MODEL } }) },
         session: {
           create: async () => ({ data: { id: "test-session" } }),
           prompt: async () => ({ data: {} }),
@@ -406,7 +406,7 @@ describe("sisyphus-task", () => {
       const mockManager = { launch: async () => ({}) }
       const mockClient = {
         app: { agents: async () => ({ data: [] }) },
-        config: { get: async () => ({ model: SYSTEM_DEFAULT_MODEL }) },
+        config: { get: async () => ({ data: { model: SYSTEM_DEFAULT_MODEL } }) },
         session: {
           create: async () => ({ data: { id: "test-session" } }),
           prompt: async () => ({ data: {} }),
@@ -453,7 +453,7 @@ describe("sisyphus-task", () => {
       const mockManager = { launch: async () => ({}) }
       const mockClient = {
         app: { agents: async () => ({ data: [] }) },
-        config: { get: async () => ({ model: SYSTEM_DEFAULT_MODEL }) },
+        config: { get: async () => ({ data: { model: SYSTEM_DEFAULT_MODEL } }) },
         session: {
           get: async () => ({ data: { directory: "/project" } }),
           create: async () => ({ data: { id: "test-session" } }),
@@ -528,7 +528,7 @@ describe("sisyphus-task", () => {
           ],
         }),
       },
-      config: { get: async () => ({ model: SYSTEM_DEFAULT_MODEL }) },
+      config: { get: async () => ({ data: { model: SYSTEM_DEFAULT_MODEL } }) },
       app: {
         agents: async () => ({ data: [] }),
       },
@@ -586,7 +586,7 @@ describe("sisyphus-task", () => {
           data: [],
         }),
       },
-      config: { get: async () => ({ model: SYSTEM_DEFAULT_MODEL }) },
+      config: { get: async () => ({ data: { model: SYSTEM_DEFAULT_MODEL } }) },
     }
     
     const tool = createDelegateTask({
@@ -638,7 +638,7 @@ describe("sisyphus-task", () => {
           messages: async () => ({ data: [] }),
           status: async () => ({ data: {} }),
         },
-        config: { get: async () => ({ model: SYSTEM_DEFAULT_MODEL }) },
+        config: { get: async () => ({ data: { model: SYSTEM_DEFAULT_MODEL } }) },
         app: {
           agents: async () => ({ data: [{ name: "ultrabrain", mode: "subagent" }] }),
         },
@@ -698,7 +698,7 @@ describe("sisyphus-task", () => {
           }),
           status: async () => ({ data: { "ses_sync_success": { type: "idle" } } }),
         },
-        config: { get: async () => ({ model: SYSTEM_DEFAULT_MODEL }) },
+        config: { get: async () => ({ data: { model: SYSTEM_DEFAULT_MODEL } }) },
         app: {
           agents: async () => ({ data: [{ name: "ultrabrain", mode: "subagent" }] }),
         },
@@ -751,7 +751,7 @@ describe("sisyphus-task", () => {
           messages: async () => ({ data: [] }),
           status: async () => ({ data: {} }),
         },
-        config: { get: async () => ({ model: SYSTEM_DEFAULT_MODEL }) },
+        config: { get: async () => ({ data: { model: SYSTEM_DEFAULT_MODEL } }) },
         app: {
           agents: async () => ({ data: [{ name: "ultrabrain", mode: "subagent" }] }),
         },
@@ -805,7 +805,7 @@ describe("sisyphus-task", () => {
           }),
           status: async () => ({ data: {} }),
         },
-        config: { get: async () => ({ model: SYSTEM_DEFAULT_MODEL }) },
+        config: { get: async () => ({ data: { model: SYSTEM_DEFAULT_MODEL } }) },
         app: { agents: async () => ({ data: [] }) },
       }
 

src/tools/delegate-task/tools.ts

@@ -11,7 +11,7 @@ import { discoverSkills } from "../../features/opencode-skill-loader"
 import { getTaskToastManager } from "../../features/task-toast-manager"
 import type { ModelFallbackInfo } from "../../features/task-toast-manager/types"
 import { subagentSessions, getSessionAgent } from "../../features/claude-code-session-state"
-import { log, getAgentToolRestrictions, resolveModel } from "../../shared"
+import { log, getAgentToolRestrictions, resolveModel, getOpenCodeConfigPaths } from "../../shared"
 
 type OpencodeClient = PluginInput["client"]
 
@@ -415,7 +415,7 @@ ${textContent || "(No text output)"}`
       let systemDefaultModel: string | undefined
       try {
         const openCodeConfig = await client.config.get()
-        systemDefaultModel = (openCodeConfig as { model?: string })?.model
+        systemDefaultModel = (openCodeConfig as { data?: { model?: string } })?.data?.model
       } catch {
         // Config fetch failed, proceed without system default
         systemDefaultModel = undefined
@@ -434,7 +434,13 @@ ${textContent || "(No text output)"}`
       if (args.category) {
         // Guard: require system default model for category delegation
         if (!systemDefaultModel) {
-          return `No default model configured. Set a model in your OpenCode config (model field).`
+          const paths = getOpenCodeConfigPaths({ binary: "opencode", version: null })
+          return (
+            'oh-my-opencode requires a default model.\n\n' +
+            `Add this to ${paths.configJsonc}:\n\n` +
+            '  "model": "anthropic/claude-sonnet-4-5"\n\n' +
+            '(Replace with your preferred provider/model)'
+          )
         }
 
         const resolved = resolveCategoryConfig(args.category, {