@@ -23,6 +23,7 @@ import {
2323mockedExtractObservedOverflowTokenCount,
2424mockedGlobalHookRunner,
2525mockedGetApiKeyForModel,
26+mockedIsLikelyContextOverflowError,
2627mockedMarkAuthProfileSuccess,
2728mockedPickFallbackThinkingLevel,
2829mockedResolveAuthProfileOrder,
@@ -1543,6 +1544,39 @@ describe("runEmbeddedPiAgent overflow compaction trigger routing", () => {
15431544expect(result.meta.error).toBeUndefined();
15441545});
154515461547+it("surfaces a visible blocked payload for Codex promptError overflow without assistant text", async () => {
1548+const promptError = new Error(
1549+"Codex ran out of room in the model's context window. Start a new thread or clear earlier history before retrying.",
1550+);
1551+const terminalLifecycleMeta: Array<Record<string, unknown>> = [];
1552+mockedRunEmbeddedAttempt.mockResolvedValueOnce(
1553+makeAttemptResult({
1554+ promptError,
1555+promptErrorSource: "prompt",
1556+assistantTexts: [],
1557+attemptUsage: { input: 0, output: 0, total: 0 },
1558+setTerminalLifecycleMeta: (meta) => {
1559+terminalLifecycleMeta.push(meta);
1560+},
1561+}),
1562+);
1563+1564+const result = await runEmbeddedPiAgent(overflowBaseRunParams);
1565+1566+expect(mockedIsLikelyContextOverflowError).toHaveBeenCalledWith(promptError.message);
1567+expect(mockedCompactDirect).toHaveBeenCalledTimes(1);
1568+expect(result.payloads?.[0]).toMatchObject({
1569+isError: true,
1570+text: expect.stringContaining("Context overflow"),
1571+});
1572+expect(result.payloads?.[0]?.text).toContain("/reset");
1573+expect(result.payloads?.[0]?.text).toContain("/new");
1574+expect(result.meta.error?.kind).toBe("context_overflow");
1575+expect(result.meta.livenessState).toBe("blocked");
1576+expect(result.meta.finalAssistantVisibleText).toBe(result.payloads?.[0]?.text);
1577+expect(terminalLifecycleMeta.at(-1)).toMatchObject({ livenessState: "blocked" });
1578+});
1579+15461580it("does not reset compaction attempt budget after successful tool-result truncation", async () => {
15471581const overflowError = queueOverflowAttemptWithOversizedToolOutput(
15481582mockedRunEmbeddedAttempt,
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