feat: add native KDBX scaffolding and in-memory KeePass API

tests/unit/kdbx-format.test.ts

@@ -0,0 +1,31 @@
+import { describe, expect, test } from "bun:test";
+import { parseKdbxFile } from "../../src/kdbx/format";
+
+function createBuffer(): Uint8Array {
+	const buffer = new Uint8Array(16);
+	buffer[0] = 0x03;
+	buffer[1] = 0xd9;
+	buffer[2] = 0xa2;
+	buffer[3] = 0x9a;
+	buffer[4] = 0x67;
+	buffer[5] = 0xfb;
+	buffer[6] = 0x4b;
+	buffer[7] = 0xb5;
+	buffer[8] = 0x01;
+	buffer[9] = 0x00;
+	buffer[10] = 0x04;
+	buffer[11] = 0x00;
+	buffer[12] = 0xaa;
+	buffer[13] = 0xbb;
+	buffer[14] = 0xcc;
+	buffer[15] = 0xdd;
+	return buffer;
+}
+
+describe("parseKdbxFile", () => {
+	test("extracts header and payload", () => {
+		const file = parseKdbxFile(createBuffer());
+		expect(file.header.version).toEqual({ major: 4, minor: 1 });
+		expect(Array.from(file.payload)).toEqual([0xaa, 0xbb, 0xcc, 0xdd]);
+	});
+});