feat(python): 完成 Python 全量迁移——剩余平台、登录通道与公共层修复

- 新增 5sing/apple/xm/me/qt/lr 平台包与取流实现（含 xm-sign、MissEvan 签名、蜻蜓 HMAC、Apple developer token）
- 新增 wy/kg/tx/lr 登录：扫码、手机号、账密（kg 20028 风控指纹）、cookie 绑定、kg/tx 续期
- request 层：保留多值 Set-Cookie；JSON body 紧凑化（修复 kg 网关验签）；直连不经系统代理（对齐 Node）
- 登录路由统一 Body(embed=True)，修复扫码轮询 422；lifespan 接入登录续期调度
- ruff/format/pyright 全绿；14 平台真实联网与 HTTP 路由验证通过

app/sdk/platforms/lr/music_search.py

@@ -0,0 +1,58 @@
+"""懒人听书搜索（对应 sdk/lr/musicSearch.ts，App 通道，游客匿名）。
+
+接口: /yyting/search/searchBatch.action?keyWord=&searchOption=1&pageSize=&type=0&q=2150
+实测（2026-10-02）匿名可用；结果分 data.bookResult/albumResult/folderResult/...
+书籍条目字段：id(baseEntityId 同值)/name/announcer/cover
+"""
+
+from __future__ import annotations
+
+import math
+from typing import Any
+
+from app.sdk.common.utils import as_dict, as_list
+from app.sdk.platforms.lr.app_api import app_api_get
+
+
+async def search(keyword: str, page: int = 1, limit: int = 20, retry_num: int = 0) -> dict[str, Any]:
+    del retry_num  # 契约参数，游客搜索无重试语义
+    body = await app_api_get(
+        "/yyting/search/searchBatch.action",
+        {
+            "keyWord": keyword,
+            "searchOption": "1",
+            "pageSize": str(limit),
+            "type": str(page - 1),
+            "q": "2150",
+        },
+    )
+    api_status = body.get("apiStatus")
+    if api_status is not None and api_status != 0:
+        raise RuntimeError(str(body.get("msg") or f"搜索失败（code {api_status}）"))
+    book_result = as_dict(as_dict(body.get("data")).get("bookResult"))
+    books = [item for item in as_list(book_result.get("list")) if isinstance(item, dict)]
+    total = int(book_result.get("count") or len(books))
+    return {
+        "allPage": math.ceil(total / limit) or page,
+        "total": total,
+        "limit": limit,
+        "source": "lr",
+        "list": [
+            {
+                "songmid": str(item.get("id", item.get("baseEntityId"))),
+                "name": item.get("name") or "",
+                "singer": item.get("announcer") or item.get("author") or "",
+                "albumId": "",
+                "albumName": "",
+                "interval": 0,
+                "payPlay": False,
+                "img": item.get("cover") or None,
+                "lrc": "",
+                "lrcx": "",
+                "types": [],
+                "_types": {},
+                "disabled": False,
+            }
+            for item in books
+        ],
+    }