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
2026-10-23 21:55:45 +08:00
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+"""酷狗评论（对应 sdk/kg/comment.ts）。
+
+签名：`signatureParams(params)` —— 参数串按键排序拼接后以 android 盐包裹取 MD5。
+返回形状是 `{source, comments, total, page, limit, maxPage}`（不是 `list`），
+`filterComment` 还要处理 `atlist` 替换与 `pcontent`（楼中楼）两种形态。
+"""
+
+from __future__ import annotations
+
+import math
+import time
+from typing import Any
+
+from app.sdk.common.request import http_fetch
+from app.sdk.common.utils import date_format2, decode_name
+from app.sdk.platforms.kg.util import signature_params
+
+_UA = (
+    "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) "
+    "Chrome/107.0.0.0 Safari/537.36 Edg/107.0.1418.24"
+)
+
+
+def _comment_params(hash_value: str, page: int, limit: int) -> str:
+    return (
+        "dfid=0&mid=16249512204336365674023395779019"
+        f"&clienttime={int(time.time() * 1000)}&uuid=0&extdata={hash_value}"
+        "&appid=1005&code=fc4be23b4e972707f36b8a828a93ba8a"
+        f"&schash={hash_value}&clientver=11409&p={page}&clienttoken=&pagesize={limit}"
+        "&ver=10&kugouid=0"
+    )
+
+
+def _replace_at(raw: str, at_list: list[dict[str, Any]]) -> str:
+    for item in at_list:
+        raw = raw.replace(f"[at={item.get('id')}]", f"@{item.get('name')} ")
+    return raw
+
+
+def _format_comment(raw_list: list[dict[str, Any]]) -> list[dict[str, Any]]:
+    result: list[dict[str, Any]] = []
+    for item in raw_list:
+        content = item.get("content") or ""
+        if item.get("atlist"):
+            content = _replace_at(str(content), item["atlist"])
+        images = [image.get("url") for image in item.get("images") or []] if item.get("images") else []
+        like = item.get("like") or {}
+        data = {
+            "id": item.get("id"),
+            "text": decode_name(content),
+            "images": images,
+            "location": item.get("location"),
+            "time": item.get("addtime"),
+            "timeStr": date_format2(item.get("addtime") or 0),
+            "userName": item.get("user_name"),
+            "avatar": item.get("user_pic"),
+            "userId": item.get("user_id"),
+            "likedCount": like.get("likenum"),
+            "replyNum": item.get("reply_num"),
+            "reply": [],
+        }
+        if item.get("pcontent"):
+            # 楼中楼：父评论包一层，原评论挂在 reply 里
+            result.append(
+                {
+                    "id": item.get("id"),
+                    "text": decode_name(item["pcontent"]),
+                    "time": None,
+                    "userName": item.get("puser"),
+                    "avatar": None,
+                    "userId": item.get("puser_id"),
+                    "likedCount": None,
+                    "replyNum": None,
+                    "reply": [data],
+                }
+            )
+        else:
+            result.append(data)
+    return result
+
+
+async def _get_comment(hash_value: str, page: int, limit: int, hot: bool) -> dict[str, Any]:
+    path = "topliked" if hot else "newest"
+    params = _comment_params(hash_value, page, limit)
+    resp = await http_fetch(
+        f"http://m.comment.service.kugou.com/r/v1/rank/{path}?{params}&signature={signature_params(params)}",
+        headers={"User-Agent": _UA},
+    )
+    body = resp.body if isinstance(resp.body, dict) else {}
+    if resp.status_code != 200 or body.get("err_code") != 0:
+        raise RuntimeError("获取热门评论失败" if hot else "获取评论失败")
+    total = body.get("count") or 0
+    return {
+        "source": "kg",
+        "comments": _format_comment(body.get("list") or []),
+        "total": total,
+        "page": page,
+        "limit": limit,
+        "maxPage": math.ceil(total / limit) if limit else 1,
+    }
+
+
+async def get_comment(song_info: dict[str, Any], page: int = 1, limit: int = 20) -> dict[str, Any]:
+    hash_value = str(song_info.get("hash") or song_info.get("songmid") or "")
+    return await _get_comment(hash_value, page, limit, False)
+
+
+async def get_hot_comment(song_info: dict[str, Any], page: int = 1, limit: int = 20) -> dict[str, Any]:
+    hash_value = str(song_info.get("hash") or song_info.get("songmid") or "")
+    return await _get_comment(hash_value, page, limit, True)
+
+
+async def get_reply_comment(
+    song_info: dict[str, Any], reply_id: Any, page: int = 1, limit: int = 100
+) -> dict[str, Any]:
+    songmid = str(song_info.get("songmid") or "")
+    children_id = str(song_info.get("audioId") or "").split("_")[0] if len(songmid) == 32 else songmid
+    resp = await http_fetch(
+        "http://comment.service.kugou.com/index.php?r=commentsv2/getReplyWithLike"
+        "&code=fc4be23b4e972707f36b8a828a93ba8a"
+        f"&p={page}&pagesize={limit}&ver=1.01&clientver=8373&kugouid=687373022&need_show_image=1"
+        f"&appid=1001&childrenid={children_id}&tid={reply_id}",
+        headers={"User-Agent": "Android712-AndroidPhone-8983-18-0-COMMENT-wifi"},
+    )
+    body = resp.body if isinstance(resp.body, dict) else {}
+    if resp.status_code != 200 or body.get("err_code") != 0:
+        raise RuntimeError("获取回复评论失败")
+    return {"source": "kg", "comments": _format_comment(body.get("list") or [])}