test: migrate suites to e2e coverage layout

src/agents/pi-embedded-helpers.islikelycontextoverflowerror.e2e.test.ts

@@ -0,0 +1,40 @@
+import { describe, expect, it } from "vitest";
+import { isLikelyContextOverflowError } from "./pi-embedded-helpers.js";
+
+describe("isLikelyContextOverflowError", () => {
+  it("matches context overflow hints", () => {
+    const samples = [
+      "Model context window is 128k tokens, you requested 256k tokens",
+      "Context window exceeded: requested 12000 tokens",
+      "Prompt too large for this model",
+    ];
+    for (const sample of samples) {
+      expect(isLikelyContextOverflowError(sample)).toBe(true);
+    }
+  });
+
+  it("excludes context window too small errors", () => {
+    const samples = [
+      "Model context window too small (minimum is 128k tokens)",
+      "Context window too small: minimum is 1000 tokens",
+    ];
+    for (const sample of samples) {
+      expect(isLikelyContextOverflowError(sample)).toBe(false);
+    }
+  });
+
+  it("excludes rate limit errors that match the broad hint regex", () => {
+    const samples = [
+      "request reached organization TPD rate limit, current: 1506556, limit: 1500000",
+      "rate limit exceeded",
+      "too many requests",
+      "429 Too Many Requests",
+      "exceeded your current quota",
+      "This request would exceed your account's rate limit",
+      "429 Too Many Requests: request exceeds rate limit",
+    ];
+    for (const sample of samples) {
+      expect(isLikelyContextOverflowError(sample)).toBe(false);
+    }
+  });
+});