test(agent-config): add regression tests for agent merge priority order

src/tools/call-omo-agent/agent-resolver.ts

@@ -0,0 +1,45 @@
+import type { PluginInput } from "@opencode-ai/plugin";
+import { ALLOWED_AGENTS } from "./constants";
+import { normalizeSDKResponse } from "../../shared";
+import { log } from "../../shared/logger";
+
+type AgentInfo = {
+  name: string;
+  mode?: "subagent" | "primary" | "all";
+};
+
+/**
+ * Resolves the set of callable agent names at execute-time by merging the
+ * hardcoded `ALLOWED_AGENTS` with any additional agents discovered dynamically
+ * via `client.app.agents()`. Custom agents loaded from registered agent
+ * directories appear here alongside built-ins.
+ *
+ * Falls back to `ALLOWED_AGENTS` alone if the dynamic lookup fails.
+ *
+ * @param client - The plugin client with access to the agent registry
+ * @returns Array of lowercase callable agent names (excludes primary-mode agents)
+ */
+export async function resolveCallableAgents(
+  client: PluginInput["client"],
+): Promise<string[]> {
+  try {
+    const agentsResult = await client.app.agents();
+    const agents = normalizeSDKResponse(agentsResult, [] as AgentInfo[], {
+      preferResponseOnMissingData: true,
+    });
+
+    const dynamicAgents = agents
+      .filter((a) => a.mode !== "primary")
+      .map((a) => a.name.toLowerCase());
+
+    const merged = new Set([...ALLOWED_AGENTS, ...dynamicAgents]);
+    return [...merged];
+  } catch (error) {
+    const message = error instanceof Error ? error.message : String(error);
+    log(
+      "[call_omo_agent] Failed to resolve dynamic agents, falling back to built-in list",
+      { error: message },
+    );
+    return [...ALLOWED_AGENTS];
+  }
+}