fork(fix): Clone AMLL 并修复 BUG

- 将AMLL Clone到本以地进行修复和优化(emm虽然这很不优雅但是暂时无时间做子模块和Fork)
- 修复在当前播放歌词行不可见的视口Seek会出现滚动偏移的问题

amll-local/packages/lyric/test/eqrc.test.ts

@@ -0,0 +1,56 @@
+import { createHash } from "node:crypto";
+import { readFileSync } from "node:fs";
+import { resolve } from "node:path";
+import { describe, expect, it } from "vitest";
+import { decryptQrcHex, encryptQrcHex } from "../src/formats/eqrc";
+import { parseQrc } from "../src/formats/qrc";
+
+function decodeXmlEntities(text: string): string {
+	return text
+		.replace(/&lt;/g, "<")
+		.replace(/&gt;/g, ">")
+		.replace(/&quot;/g, '"')
+		.replace(/&apos;/g, "'")
+		.replace(/&amp;/g, "&")
+		.replace(/&#10;/g, "\n")
+		.replace(/&#13;/g, "\r");
+}
+
+function extractQrcPayload(xmlLike: string): string {
+	const match = xmlLike.match(/<!\[CDATA\[([\s\S]*?)\]\]>/);
+	if (match?.[1]) return match[1].trim();
+	const attrMatch = xmlLike.match(/LyricContent="([^"]*)"/);
+	if (!attrMatch?.[1]) return "";
+	return decodeXmlEntities(attrMatch[1]).trim();
+}
+
+describe("eqrc", () => {
+	it("decrypts rust sample hex with stable output", () => {
+		const hexPath = resolve(__dirname, "eqrc.hex");
+		const hex = readFileSync(hexPath, "utf8").trim();
+		const decrypted = decryptQrcHex(hex);
+		const sha256 = createHash("sha256").update(decrypted).digest("hex");
+		const qrcText = extractQrcPayload(decrypted);
+		const lines = parseQrc(qrcText);
+
+		expect(hex.length).toBe(7136);
+		expect(decrypted.length).toBe(7188);
+		expect(sha256).toBe(
+			"f3bf2f3b5af01e9f21c5fc49e5ed9ab59370faa530f62b60a38df1881ea31f6a",
+		);
+		expect(decrypted).toContain("<QrcInfos>");
+		expect(decrypted).toContain('<LyricInfo LyricCount="1">');
+		expect(qrcText.length).toBeGreaterThan(0);
+		expect(lines.length).toBeGreaterThan(0);
+	});
+
+	it("keeps decrypt/encrypt/decrypt text stable for rust sample", () => {
+		const hexPath = resolve(__dirname, "eqrc.hex");
+		const hex = readFileSync(hexPath, "utf8").trim();
+		const decrypted = decryptQrcHex(hex);
+		const encryptedAgain = encryptQrcHex(decrypted);
+		const decryptedAgain = decryptQrcHex(encryptedAgain);
+
+		expect(decryptedAgain).toBe(decrypted);
+	});
+});