diff --git a/src/cli/cli-installer.telemetry.test.ts b/src/cli/cli-installer.telemetry.test.ts
new file mode 100644
index 000000000..c1b8eb8ac
--- /dev/null
+++ b/src/cli/cli-installer.telemetry.test.ts
@@ -0,0 +1,74 @@
+import { afterEach, describe, expect, it, mock, spyOn } from "bun:test"
+import * as configManager from "./config-manager"
+import type { InstallArgs } from "./types"
+
+describe("runCliInstaller telemetry isolation", () => {
+  afterEach(() => {
+    mock.restore()
+  })
+
+  it("does not crash CLI install when telemetry shutdown throws", async () => {
+    // given
+    const restoreSpies = [
+      spyOn(configManager, "detectCurrentConfig").mockReturnValue({
+        isInstalled: false,
+        installedVersion: null,
+        hasClaude: false,
+        isMax20: false,
+        hasOpenAI: false,
+        hasGemini: false,
+        hasCopilot: false,
+        hasOpencodeZen: false,
+        hasZaiCodingPlan: false,
+        hasKimiForCoding: false,
+        hasOpencodeGo: false,
+        hasVercelAiGateway: false,
+      }),
+      spyOn(configManager, "isOpenCodeInstalled").mockResolvedValue(true),
+      spyOn(configManager, "getOpenCodeVersion").mockResolvedValue("1.4.0"),
+      spyOn(configManager, "addPluginToOpenCodeConfig").mockResolvedValue({
+        success: true,
+        configPath: "/tmp/opencode.jsonc",
+      }),
+      spyOn(configManager, "writeOmoConfig").mockReturnValue({
+        success: true,
+        configPath: "/tmp/oh-my-opencode.jsonc",
+      }),
+    ]
+
+    mock.module("../shared/posthog", () => ({
+      createCliPostHog: mock(() => ({
+        trackActive: mock(() => {}),
+        capture: mock(() => {}),
+        captureException: mock(() => {}),
+        shutdown: mock(async () => {
+          throw new Error("shutdown failed")
+        }),
+      })),
+      getPostHogDistinctId: mock(() => "install-distinct-id"),
+    }))
+
+    const { runCliInstaller } = await import(`./cli-installer?telemetry=${Date.now()}-${Math.random()}`)
+    const args: InstallArgs = {
+      tui: false,
+      claude: "no",
+      openai: "yes",
+      gemini: "no",
+      copilot: "yes",
+      opencodeZen: "no",
+      zaiCodingPlan: "no",
+      kimiForCoding: "no",
+      opencodeGo: "no",
+    }
+
+    // when
+    const result = await runCliInstaller(args, "3.4.0")
+
+    // then
+    expect(result).toBe(0)
+
+    for (const spy of restoreSpies) {
+      spy.mockRestore()
+    }
+  })
+})