diff --git a/packages/pi-coding-agent/src/modes/interactive/components/__tests__/provider-display-name.test.ts b/packages/pi-coding-agent/src/modes/interactive/components/__tests__/provider-display-name.test.ts
new file mode 100644
index 000000000..221356e90
--- /dev/null
+++ b/packages/pi-coding-agent/src/modes/interactive/components/__tests__/provider-display-name.test.ts
@@ -0,0 +1,16 @@
+// GSD-2 — Provider display name mapping tests
+import { test, describe } from "node:test";
+import assert from "node:assert/strict";
+import { providerDisplayName } from "../model-selector.js";
+
+describe("providerDisplayName", () => {
+	test("renames 'anthropic' to 'anthropic-api'", () => {
+		assert.equal(providerDisplayName("anthropic"), "anthropic-api");
+	});
+
+	test("passes through unmapped providers unchanged", () => {
+		assert.equal(providerDisplayName("claude-code"), "claude-code");
+		assert.equal(providerDisplayName("openai"), "openai");
+		assert.equal(providerDisplayName("bedrock"), "bedrock");
+	});
+});
diff --git a/packages/pi-coding-agent/src/modes/interactive/components/model-selector.ts b/packages/pi-coding-agent/src/modes/interactive/components/model-selector.ts
index 078f6eb86..9f978ffdf 100644
--- a/packages/pi-coding-agent/src/modes/interactive/components/model-selector.ts
+++ b/packages/pi-coding-agent/src/modes/interactive/components/model-selector.ts
@@ -20,7 +20,7 @@ const PROVIDER_DISPLAY_NAMES: Record<string, string> = {
 	anthropic: "anthropic-api",
 };
 
-function providerDisplayName(provider: string): string {
+export function providerDisplayName(provider: string): string {
 	return PROVIDER_DISPLAY_NAMES[provider] ?? provider;
 }