feat(reader): STATUS.md parser + TS project scaffold [skip-tdd: visual for configs]

- vitest+TS scaffold (package.json/tsconfig/vitest.config = config artifacts)
- src/parser.ts: parses STATUS.md blocks → StatusBlock[]
- tests/parser.test.ts: 6 cases (single, multi, blocker, null-blocker, empty, unknown emoji)
- fix emoji contract: align with using-tasks reality (⚪ open / 🔴 in_progress / 🟡 paused / 🔵 blocked / 🟢 done); reader-task acceptance + design doc updated

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

tests/fixtures/status-multi.md

@@ -0,0 +1,27 @@
+# Task Board
+_Updated: 2026-05-22_
+
+## 🔴 [task-a] — active task
+**Status:** active
+**Where I stopped:** working on A.
+**Next action:** continue A.
+**Branch:** master
+
+---
+
+## 🔵 [task-b] — blocked task
+**Status:** blocked
+**Where I stopped:** waiting.
+**Next action:** unblock.
+**Blocker:** task-a
+**Branch:** master
+
+---
+
+## ⚪ [task-c] — ready task
+**Status:** ready
+**Where I stopped:** not started.
+**Next action:** start C.
+**Branch:** master
+
+---

tests/fixtures/status-single-block.md

@@ -0,0 +1,10 @@
+# Task Board
+_Updated: 2026-05-22_
+
+## 🔴 [board-viewer-pointers] — pre-impl: fill Domain conventions with design-context pointers
+**Status:** active
+**Where I stopped:** только что промочен дизайн.
+**Next action:** вставить блок в `.wiki/CLAUDE.md`.
+**Branch:** master
+
+---

tests/parser.test.ts

@@ -0,0 +1,56 @@
+import { describe, expect, test } from 'vitest';
+import { readFileSync } from 'node:fs';
+import { join } from 'node:path';
+import { parseStatus } from '../src/parser.ts';
+
+const fixture = (name: string) =>
+  readFileSync(join(__dirname, 'fixtures', name), 'utf8');
+
+describe('parseStatus', () => {
+  test('parses multiple blocks preserving order and statuses', () => {
+    const blocks = parseStatus(fixture('status-multi.md'));
+
+    expect(blocks).toHaveLength(3);
+    expect(blocks.map((b) => b.slug)).toEqual(['task-a', 'task-b', 'task-c']);
+    expect(blocks.map((b) => b.status)).toEqual(['in_progress', 'blocked', 'open']);
+  });
+
+  test('parses Blocker field when present', () => {
+    const blocks = parseStatus(fixture('status-multi.md'));
+    const blocked = blocks.find((b) => b.slug === 'task-b');
+
+    expect(blocked?.blocker).toBe('task-a');
+  });
+
+  test('Blocker field is null when absent', () => {
+    const blocks = parseStatus(fixture('status-multi.md'));
+    const ready = blocks.find((b) => b.slug === 'task-c');
+
+    expect(ready?.blocker).toBeNull();
+  });
+
+  test('returns empty array for STATUS.md without task blocks', () => {
+    expect(parseStatus('# Task Board\n_Updated: 2026-05-22_\n\nNo tasks yet.\n')).toEqual([]);
+  });
+
+  test('ignores blocks whose H2 has no known status emoji', () => {
+    const text = '## 🚀 [some-task] — title\n**Status:** custom\n**Branch:** master\n---\n';
+    expect(parseStatus(text)).toEqual([]);
+  });
+
+  test('parses a single active block with all fields', () => {
+    const blocks = parseStatus(fixture('status-single-block.md'));
+
+    expect(blocks).toHaveLength(1);
+    expect(blocks[0]).toEqual({
+      slug: 'board-viewer-pointers',
+      title: 'pre-impl: fill Domain conventions with design-context pointers',
+      status: 'in_progress',
+      status_emoji: '🔴',
+      where_stopped: 'только что промочен дизайн.',
+      next_action: 'вставить блок в `.wiki/CLAUDE.md`.',
+      blocker: null,
+      branch: 'master',
+    });
+  });
+});