diff --git a/src/tui-opentui/list-modal.ts b/src/tui-opentui/list-modal.ts
index cae1e7a5e..ffc8984b4 100644
--- a/src/tui-opentui/list-modal.ts
+++ b/src/tui-opentui/list-modal.ts
@@ -41,7 +41,15 @@ export async function runListModal(
 ): Promise<string | null> {
   const renderer = config.createRenderer
     ? await config.createRenderer()
-    : await createCliRenderer({ exitOnCtrlC: false, targetFps: 30 })
+    : await createCliRenderer({
+        exitOnCtrlC: false,
+        targetFps: 30,
+        // Same trade as the product host (CL-5540): reporting off by default
+        // so the terminal owns drag-select and its own copy in these satellite
+        // pickers too.
+        useMouse: false,
+        enableMouseMovement: false,
+      })
 
   const shell = createAppShell(renderer, { title: config.title, run: "idle" })
 
diff --git a/src/tui-opentui/mouse-reporting-disabled.test.ts b/src/tui-opentui/mouse-reporting-disabled.test.ts
new file mode 100644
index 000000000..05c02423b
--- /dev/null
+++ b/src/tui-opentui/mouse-reporting-disabled.test.ts
@@ -0,0 +1,83 @@
+/**
+ * CL-5540: the onboarding provider picker and the satellite list modals
+ * (session resume, session mode) mount their own renderer and must disable
+ * DEC mouse reporting the same way the product host does, or the terminal
+ * never gets button-1 drags to run its own text selection. These tests mock
+ * `@opentui/core` so the real (non-test-injected) `createCliRenderer` branch
+ * runs, and assert on the options it was actually called with.
+ */
+import { afterAll, describe, expect, mock, test } from "bun:test"
+import type { Harness } from "./harness.js"
+
+type CapturedRendererOptions = {
+  readonly useMouse?: boolean
+  readonly enableMouseMovement?: boolean
+}
+
+const capturedOptions: CapturedRendererOptions[] = []
+const mountedHarnesses: Harness[] = []
+
+// The mock must be registered before anything (including this file's own
+// helpers) does a real `@opentui/core` import, or that import wins the module
+// cache and the mock never takes effect. Every dependency below is loaded
+// with a dynamic `import()` after `mock.module` for that reason.
+const realCore = await import("@opentui/core")
+
+mock.module("@opentui/core", () => ({
+  ...realCore,
+  createCliRenderer: async (options: CapturedRendererOptions) => {
+    capturedOptions.push(options)
+    const { createHarness } = await import("./harness.js")
+    const harness = await createHarness({ width: 80, height: 24 })
+    mountedHarnesses.push(harness)
+    return harness.renderer
+  },
+}))
+
+// `mock.module` replaces the shared module cache for the whole test process,
+// not just this file — every other test that imports `@opentui/core` runs in
+// the same process. Put the real module back once this file is done so a
+// later un-injected `createCliRenderer` caller does not silently get this
+// fake harness renderer instead.
+afterAll(() => {
+  mock.module("@opentui/core", () => realCore)
+})
+
+const { runListModal } = await import("./list-modal.js")
+const { runProviderSetup } = await import("./provider-setup.js")
+
+async function waitForMount(): Promise<void> {
+  for (let i = 0; i < 100 && capturedOptions.length === 0; i++) {
+    await new Promise((resolve) => setTimeout(resolve, 10))
+  }
+}
+
+describe("default renderer mount disables DEC mouse reporting (CL-5540)", () => {
+  test("runListModal", async () => {
+    capturedOptions.length = 0
+    // Fire-and-forget: the mounted renderer never resolves this promise in
+    // this test (nothing presses a key), so only await the mount itself.
+    void runListModal({
+      title: "resume session",
+      options: [{ id: "s-1", label: "First session" }],
+    })
+    await waitForMount()
+    expect(capturedOptions).toHaveLength(1)
+    expect(capturedOptions[0]?.useMouse).toBe(false)
+    expect(capturedOptions[0]?.enableMouseMovement).toBe(false)
+    mountedHarnesses.pop()?.destroy()
+  })
+
+  test("runProviderSetup", async () => {
+    capturedOptions.length = 0
+    void runProviderSetup({
+      onSubmit: async () => undefined,
+      showTelemetryNotice: false,
+    })
+    await waitForMount()
+    expect(capturedOptions).toHaveLength(1)
+    expect(capturedOptions[0]?.useMouse).toBe(false)
+    expect(capturedOptions[0]?.enableMouseMovement).toBe(false)
+    mountedHarnesses.pop()?.destroy()
+  })
+})
diff --git a/src/tui-opentui/provider-setup.ts b/src/tui-opentui/provider-setup.ts
index eb6a6d41f..f368ff3ea 100644
--- a/src/tui-opentui/provider-setup.ts
+++ b/src/tui-opentui/provider-setup.ts
@@ -583,7 +583,14 @@ export async function runProviderSetup(
 ): Promise<boolean> {
   const renderer = config.createRenderer
     ? await config.createRenderer()
-    : await createCliRenderer({ exitOnCtrlC: false, targetFps: 30 })
+    : await createCliRenderer({
+        exitOnCtrlC: false,
+        targetFps: 30,
+        // Same trade as the product host (CL-5540): reporting off by default
+        // so the terminal owns drag-select and its own copy during onboarding.
+        useMouse: false,
+        enableMouseMovement: false,
+      })
 
   const choices = providerChoices()
   const values: ProviderFormValues = {