feat(backup): add MinIO snapshot backups via CLI and scheduler

src/backup/run.test.ts

@@ -0,0 +1,21 @@
+import { describe, it, expect } from 'vitest';
+import { backupInternals } from './run.js';
+
+describe('backup internals', () => {
+  it('builds minio host URL with protocol and encoded credentials', () => {
+    const host = backupInternals.buildMinioHost({
+      endpoint: 'localhost:9000',
+      accessKey: 'minio-admin',
+      secretKey: 's3cr3t/with:chars',
+      secure: false,
+    });
+
+    expect(host).toBe('http://minio-admin:s3cr3t%2Fwith%3Achars@localhost:9000');
+  });
+
+  it('builds object key from prefix and file name', () => {
+    expect(backupInternals.buildObjectKey('flynn/daily', 'a.tar.gz')).toBe('flynn/daily/a.tar.gz');
+    expect(backupInternals.buildObjectKey('/flynn/daily/', 'a.tar.gz')).toBe('flynn/daily/a.tar.gz');
+    expect(backupInternals.buildObjectKey('', 'a.tar.gz')).toBe('a.tar.gz');
+  });
+});