fix: update max songs per page for qqmusic

[janzhen]

fix #35

Summary by Sourcery

Bug Fixes:

• Reduce qqmusic maximum songs per page from 1000 to 30 to comply with platform pagination constraints.

[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

Reduces the maximum number of QQ Music songs returned per page from 1000 to 30 to align with expected pagination limits and avoid over-fetching.

Class diagram for QQ Music pagination constants update

classDiagram
  class QQMusicPaginationConfig {
    <<constant_group>>
    int qqMusicErrorResponseLength
    int maxSongsPerPage
    int maxTotalSongs
  }

  QQMusicPaginationConfig : qqMusicErrorResponseLength = 108
  QQMusicPaginationConfig : maxSongsPerPage = 30
  QQMusicPaginationConfig : maxTotalSongs = 10000

Loading

File-Level Changes

Change	Details	Files
Adjust QQ Music pagination limit to a smaller, safer page size.	Change the max songs per page constant value from 1000 to 30 for QQ Music pagination. Keep overall maximum supported total songs unchanged at 10000.	logic/qqmusic.go

Assessment against linked issues

Issue	Objective	Addressed	Explanation
#35	Ensure QQ音乐 playlist parsing retrieves all songs from a playlist (beyond just the first 30) by correctly handling pagination.	✅

Possibly linked issues

• QQ音乐只解析了首页30首歌，解析不完整 #35: Issue称QQ音乐只解析30首歌，PR通过调整分页配置修正对应的歌单解析问题
• QQ音乐只解析了首页30首歌，解析不完整 #35: The issue complains QQ Music isn’t supported; the PR fixes QQ Music pagination to restore proper support.
• QQ音乐只解析了首页30首歌，解析不完整 #35: PR adjusts QQMusic pagination (maxSongsPerPage to 30) to fix failures when loading long playlists from the issue.

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[sourcery-ai]

Hey - I've left some high level feedback:

• Consider adding context in the comment (e.g., link or reference to QQMusic API behavior) explaining why the max is 30 so future changes to the API can be validated against this assumption.
• If other parts of the logic implicitly assume larger page sizes, it may be cleaner to centralize pagination behavior so that changes to maxSongsPerPage do not require scattered adjustments in the future.

Prompt for AI Agents

Please address the comments from this code review:

## Overall Comments
- Consider adding context in the comment (e.g., link or reference to QQMusic API behavior) explaining why the max is 30 so future changes to the API can be validated against this assumption.
- If other parts of the logic implicitly assume larger page sizes, it may be cleaner to centralize pagination behavior so that changes to maxSongsPerPage do not require scattered adjustments in the future.

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