feat: task separate proxy

[monkeyWie]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 58.97436% with 16 lines in your changes missing coverage. Please review.

Project coverage is 61.21%. Comparing base (6538b29) to head (0358cd6).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg/base/model.go	0.00%	7 Missing ⚠️
pkg/util/json.go	55.55%	2 Missing and 2 partials ⚠️
internal/protocol/bt/fetcher.go	50.00%	1 Missing and 1 partial ⚠️
pkg/download/downloader.go	80.00%	2 Missing ⚠️
pkg/download/engine/engine.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #727      +/-   ##
==========================================
- Coverage   61.28%   61.21%   -0.08%     
==========================================
  Files          35       35              
  Lines        3583     3597      +14     
==========================================
+ Hits         2196     2202       +6     
- Misses       1118     1124       +6     
- Partials      269      271       +2     

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