chore: восстановление репозитория из снапшота v0.3.1

Прежняя git-история утрачена при переносе проекта на машину владельца
(снапшот без .git). Хэши коммитов в docs/reports/* относятся к утраченной
истории.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

packages/board/src/input.test.ts

@@ -0,0 +1,79 @@
+/**
+ * Тесты редьюсера тач-ввода: вся таблица переходов.
+ * tap → pixelToPoint; pending/commit/cancel/перенос по контракту.
+ */
+import { describe, expect, it } from 'vitest';
+import type { Point } from '@go-learn/core';
+import { computeGeometry, pointToPixel } from './geometry.js';
+import type { InputEvent, InputState } from './input.js';
+import { reduceInput } from './input.js';
+
+const geo = computeGeometry(9, 450, false);
+const IDLE: InputState = { pending: null };
+
+function tap(point: Point): InputEvent {
+  const { x, y } = pointToPixel(geo, point);
+  return { type: 'tap', px: x, py: y };
+}
+
+const A: Point = { x: 3, y: 3 };
+const B: Point = { x: 5, y: 6 };
+
+describe('reduceInput: tap', () => {
+  it('тап при pending=null → pending=точка, commit=null', () => {
+    const result = reduceInput(IDLE, tap(A), geo);
+    expect(result.commit).toBeNull();
+    expect(result.state.pending).toEqual(A);
+  });
+
+  it('повторный тап по той же точке → commit=точка, pending=null', () => {
+    const result = reduceInput({ pending: A }, tap(A), geo);
+    expect(result.commit).toEqual(A);
+    expect(result.state.pending).toBeNull();
+  });
+
+  it('тап по другой точке → перенос pending, commit=null', () => {
+    const result = reduceInput({ pending: A }, tap(B), geo);
+    expect(result.commit).toBeNull();
+    expect(result.state.pending).toEqual(B);
+  });
+
+  it('тап мимо доски → состояние не меняется, commit=null', () => {
+    const miss: InputEvent = { type: 'tap', px: -20, py: 450 + 20 };
+    const fromIdle = reduceInput(IDLE, miss, geo);
+    expect(fromIdle.state).toBe(IDLE);
+    expect(fromIdle.commit).toBeNull();
+    const withPending: InputState = { pending: A };
+    const fromPending = reduceInput(withPending, miss, geo);
+    expect(fromPending.state).toBe(withPending);
+    expect(fromPending.commit).toBeNull();
+  });
+});
+
+describe('reduceInput: confirm', () => {
+  it('confirm при pending → commit=pending, pending=null', () => {
+    const result = reduceInput({ pending: A }, { type: 'confirm' }, geo);
+    expect(result.commit).toEqual(A);
+    expect(result.state.pending).toBeNull();
+  });
+
+  it('confirm без pending → commit=null, pending=null', () => {
+    const result = reduceInput(IDLE, { type: 'confirm' }, geo);
+    expect(result.commit).toBeNull();
+    expect(result.state.pending).toBeNull();
+  });
+});
+
+describe('reduceInput: cancel', () => {
+  it('cancel при pending → сброс, commit=null', () => {
+    const result = reduceInput({ pending: A }, { type: 'cancel' }, geo);
+    expect(result.commit).toBeNull();
+    expect(result.state.pending).toBeNull();
+  });
+
+  it('cancel без pending → commit=null, pending=null', () => {
+    const result = reduceInput(IDLE, { type: 'cancel' }, geo);
+    expect(result.commit).toBeNull();
+    expect(result.state.pending).toBeNull();
+  });
+});