Rename task widget to todos

tests/prompt.test.ts

@@ -10,6 +10,38 @@ import {
 } from "../src/prompt.ts";
 import { TaskState } from "../src/state.ts";
 
+test("registers the conflict-free /todo command", async () => {
+  type RegisteredCommand = {
+    description: string;
+    handler(args: string, ctx: unknown): Promise<void>;
+  };
+  const commands = new Map<string, RegisteredCommand>();
+  const pi = {
+    on() {},
+    registerTool() {},
+    registerCommand(name: string, command: RegisteredCommand) {
+      commands.set(name, command);
+    },
+  };
+
+  piTodoHerdr(pi as never);
+
+  assert.deepEqual([...commands.keys()], ["todo"]);
+  const todo = commands.get("todo");
+  assert.equal(todo?.description, "Show or hide the todo tree widget");
+
+  const notifications: string[] = [];
+  await todo?.handler("", {
+    ui: {
+      setWidget() {},
+      notify(message: string) {
+        notifications.push(message);
+      },
+    },
+  });
+  assert.deepEqual(notifications, ["No todos yet."]);
+});
+
 test("keeps task guidance short with planning after exploration", () => {
   assert.equal(TASK_PROMPT_GUIDELINES.length, 2);
   const prompt = TASK_PROMPT_GUIDELINES.join("\n");

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);