fix(agents): extend cache-ttl eligibility for moonshot and zai

Co-authored-by: lailoo <lailoo@users.noreply.github.com>

src/agents/pi-embedded-runner/cache-ttl.test.ts

@@ -0,0 +1,30 @@
+import { describe, expect, it } from "vitest";
+import { isCacheTtlEligibleProvider } from "./cache-ttl.js";
+
+describe("isCacheTtlEligibleProvider", () => {
+  it("allows anthropic", () => {
+    expect(isCacheTtlEligibleProvider("anthropic", "claude-sonnet-4-20250514")).toBe(true);
+  });
+
+  it("allows moonshot and zai providers", () => {
+    expect(isCacheTtlEligibleProvider("moonshot", "kimi-k2.5")).toBe(true);
+    expect(isCacheTtlEligibleProvider("zai", "glm-5")).toBe(true);
+  });
+
+  it("is case-insensitive for native providers", () => {
+    expect(isCacheTtlEligibleProvider("Moonshot", "Kimi-K2.5")).toBe(true);
+    expect(isCacheTtlEligibleProvider("ZAI", "GLM-5")).toBe(true);
+  });
+
+  it("allows openrouter cache-ttl models", () => {
+    expect(isCacheTtlEligibleProvider("openrouter", "anthropic/claude-sonnet-4")).toBe(true);
+    expect(isCacheTtlEligibleProvider("openrouter", "moonshotai/kimi-k2.5")).toBe(true);
+    expect(isCacheTtlEligibleProvider("openrouter", "moonshot/kimi-k2.5")).toBe(true);
+    expect(isCacheTtlEligibleProvider("openrouter", "zai/glm-5")).toBe(true);
+  });
+
+  it("rejects unsupported providers and models", () => {
+    expect(isCacheTtlEligibleProvider("openai", "gpt-4o")).toBe(false);
+    expect(isCacheTtlEligibleProvider("openrouter", "openai/gpt-4o")).toBe(false);
+  });
+});