fix(agent-config): share task_system resolution

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

src/plugin-handlers/agent-config-handler.ts

@@ -1,7 +1,7 @@
 import { createBuiltinAgents } from "../agents";
 import { createSisyphusJuniorAgentWithOverrides } from "../agents/sisyphus-junior";
 import type { OhMyOpenCodeConfig } from "../config";
-import { log, migrateAgentConfig } from "../shared";
+import { isTaskSystemEnabled, log, migrateAgentConfig } from "../shared";
 import { AGENT_NAME_MAP } from "../shared/migration";
 import { getAgentDisplayName } from "../shared/agent-display-names";
 import { registerAgentName } from "../features/claude-code-session-state";
@@ -90,7 +90,7 @@ export async function applyAgentConfig(params: {
     params.pluginConfig.browser_automation_engine?.provider ?? "playwright";
   const currentModel = params.config.model as string | undefined;
   const disabledSkills = new Set<string>(params.pluginConfig.disabled_skills ?? []);
-  const useTaskSystem = params.pluginConfig.experimental?.task_system ?? false;
+  const useTaskSystem = isTaskSystemEnabled(params.pluginConfig);
   const disableOmoEnv = params.pluginConfig.experimental?.disable_omo_env ?? false;
 
   const includeClaudeAgents = params.pluginConfig.claude_code?.agents ?? true;

src/plugin-handlers/config-handler.test.ts

@@ -1281,6 +1281,10 @@ describe("per-agent todowrite/todoread deny when task_system enabled", () => {
     await handler(config)
 
     //#then
+    const lastCall =
+      createBuiltinAgentsMock.mock.calls[createBuiltinAgentsMock.mock.calls.length - 1]
+    expect(lastCall?.[11]).toBe(false)
+
     const agentResult = config.agent as Record<string, { permission?: Record<string, unknown> }>
     expect(agentResult[getAgentDisplayName("sisyphus")]?.permission?.todowrite).toBeUndefined()
     expect(agentResult[getAgentDisplayName("sisyphus")]?.permission?.todoread).toBeUndefined()
@@ -1315,6 +1319,10 @@ describe("per-agent todowrite/todoread deny when task_system enabled", () => {
     await handler(config)
 
     //#then
+    const lastCall =
+      createBuiltinAgentsMock.mock.calls[createBuiltinAgentsMock.mock.calls.length - 1]
+    expect(lastCall?.[11]).toBe(false)
+
     const agentResult = config.agent as Record<string, { permission?: Record<string, unknown> }>
     expect(agentResult[getAgentDisplayName("sisyphus")]?.permission?.todowrite).toBeUndefined()
     expect(agentResult[getAgentDisplayName("sisyphus")]?.permission?.todoread).toBeUndefined()