Rename task widget to todos

tests/ui.test.ts

@@ -12,7 +12,7 @@ import {
   renderWidgetTree,
   snapshotStats,
 } from "../src/ui.ts";
-import { updateTaskWidget } from "../src/widget.ts";
+import { TODO_ANIMATION_INTERVAL_MS, updateTaskWidget } from "../src/widget.ts";
 
 const plainTheme = {
   fg: (_color: string, text: string) => text,
@@ -49,7 +49,7 @@ function fixture(): TaskState {
 test("renders an adaptive progress bar and stays within width", () => {
   const stats = fixture().stats();
   const wide = stripAnsi(renderProgressHeader(stats, plainTheme as never, 40));
-  assert.match(wide, /^ Tasks 1\/5 · !1  ━{4}─{16}$/);
+  assert.match(wide, /^ Todos 1\/5 · !1  ━{4}─{16}$/);
   assert.ok(visibleWidth(wide) <= 40);
 
   const narrow = renderProgressHeader(stats, plainTheme as never, 12);
@@ -353,6 +353,10 @@ test("hides an empty widget and renders a populated one", () => {
   assert.ok(lines.every((line) => visibleWidth(line) <= 30));
 });
 
+test("animates active todos twice per second", () => {
+  assert.equal(TODO_ANIMATION_INTERVAL_MS, 500);
+});
+
 test("live widgets request rerenders and dispose their interval", async () => {
   let now = 0;
   const state = new TaskState(() => now);