feat: bootstrap BoxBrain framework

tests/sleep-memory.test.ts

@@ -0,0 +1,38 @@
+import { describe, expect, it } from 'vitest';
+import { InMemoryMemoryStore, Persona } from '../src';
+
+describe('sleepMemory', () => {
+  it('objectivizes and persists extracted durable facts through the memory model', async () => {
+    const memory = new InMemoryMemoryStore();
+    const persona = new Persona('Mina', 'Mina remembers stable details.', {
+      memory,
+      now: '2026-05-01T10:00:00.000Z',
+      models: {
+        memoryExtraction: {
+          async extract(input) {
+            expect(input.formattedMessageHistory).toContain('user@2026-05-01T15:00:00.000Z: 나는 타입스크립트를 2025년부터 시작했어');
+            expect(input.instruction).toContain('Objectivize');
+            return [
+              {
+                statement: 'The user started TypeScript in 2025.',
+                topics: ['user', 'TypeScript', '2025'],
+                confidence: 0.9,
+              },
+            ];
+          },
+        },
+      },
+    });
+    const space = await persona.ready();
+
+    const drafts = await persona.sleepMemory({
+      datetime: '2026-05-02T00:00:00.000Z',
+      messageHistory: [{ sender: 'user', time: '2026-05-01T15:00:00.000Z', content: '나는 타입스크립트를 2025년부터 시작했어' }],
+    });
+
+    expect(drafts).toHaveLength(1);
+    const facts = await memory.findFacts(space.id, ['TypeScript']);
+    expect(facts[0]).toMatchObject({ statement: 'The user started TypeScript in 2025.', source: 'boxbrain.sleepMemory' });
+    expect(facts[0]?.topics).toContain('sleepMemory');
+  });
+});