test: move duplicate local scenario suites out of agents e2e

src/agents/pi-embedded-runner/model.forward-compat.test.ts

@@ -0,0 +1,63 @@
+import { beforeEach, describe, expect, it, vi } from "vitest";
+
+vi.mock("../pi-model-discovery.js", () => ({
+  discoverAuthStorage: vi.fn(() => ({ mocked: true })),
+  discoverModels: vi.fn(() => ({ find: vi.fn(() => null) })),
+}));
+
+import { buildInlineProviderModels, resolveModel } from "./model.js";
+import {
+  makeModel,
+  mockDiscoveredModel,
+  OPENAI_CODEX_TEMPLATE_MODEL,
+  resetMockDiscoverModels,
+} from "./model.test-harness.js";
+
+beforeEach(() => {
+  resetMockDiscoverModels();
+});
+
+describe("pi embedded model e2e smoke", () => {
+  it("attaches provider ids and provider-level baseUrl for inline models", () => {
+    const providers = {
+      custom: {
+        baseUrl: "http://localhost:8000",
+        models: [makeModel("custom-model")],
+      },
+    };
+
+    const result = buildInlineProviderModels(providers);
+    expect(result).toEqual([
+      {
+        ...makeModel("custom-model"),
+        provider: "custom",
+        baseUrl: "http://localhost:8000",
+        api: undefined,
+      },
+    ]);
+  });
+
+  it("builds an openai-codex forward-compat fallback for gpt-5.3-codex", () => {
+    mockDiscoveredModel({
+      provider: "openai-codex",
+      modelId: "gpt-5.2-codex",
+      templateModel: OPENAI_CODEX_TEMPLATE_MODEL,
+    });
+
+    const result = resolveModel("openai-codex", "gpt-5.3-codex", "/tmp/agent");
+    expect(result.error).toBeUndefined();
+    expect(result.model).toMatchObject({
+      provider: "openai-codex",
+      id: "gpt-5.3-codex",
+      api: "openai-codex-responses",
+      baseUrl: "https://chatgpt.com/backend-api",
+      reasoning: true,
+    });
+  });
+
+  it("keeps unknown-model errors for non-forward-compat IDs", () => {
+    const result = resolveModel("openai-codex", "gpt-4.1-mini", "/tmp/agent");
+    expect(result.model).toBeUndefined();
+    expect(result.error).toBe("Unknown model: openai-codex/gpt-4.1-mini");
+  });
+});