feat: task separate proxy

[codecov[bot]]

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 :warning:
pkg/util/json.go	55.55%	2 Missing and 2 partials :warning:
internal/protocol/bt/fetcher.go	50.00%	1 Missing and 1 partial :warning:
pkg/download/downloader.go	80.00%	2 Missing :warning:
pkg/download/engine/engine.go	0.00%	1 Missing :warning:

Additional details and impacted files

```diff @@ 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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