feat: configurable status lines for CLI footer (#904)

Co-authored-by: Letta <noreply@letta.com>

src/tests/cli/statusline-controller.test.ts

@@ -0,0 +1,31 @@
+import { describe, expect, test } from "bun:test";
+import {
+  DEFAULT_STATUS_LINE_DEBOUNCE_MS,
+  normalizeStatusLineConfig,
+} from "../../cli/helpers/statusLineConfig";
+
+describe("statusline controller-related config", () => {
+  test("normalizes debounce and refresh interval defaults", () => {
+    const normalized = normalizeStatusLineConfig({ command: "echo hi" });
+    expect(normalized.debounceMs).toBe(DEFAULT_STATUS_LINE_DEBOUNCE_MS);
+    expect(normalized.refreshIntervalMs).toBeUndefined();
+  });
+
+  test("keeps explicit refreshIntervalMs", () => {
+    const normalized = normalizeStatusLineConfig({
+      command: "echo hi",
+      refreshIntervalMs: 4500,
+    });
+    expect(normalized.refreshIntervalMs).toBe(4500);
+  });
+
+  test("clamps padding and debounce", () => {
+    const normalized = normalizeStatusLineConfig({
+      command: "echo hi",
+      padding: 999,
+      debounceMs: 10,
+    });
+    expect(normalized.padding).toBe(16);
+    expect(normalized.debounceMs).toBe(50);
+  });
+});