feature: 2.0 Proxy 支持配置临时文件传输路径 (closed #1757)

[CohleRustW]

PR

CheckList（PR Assigners）

确认已完成以下操作：

• 已将分支与当前合入分支同步
• 已在关联 Issue 中补充「功能自测」部分内容
• 已更新关联 Issue 的状态 backlog -> todo -> for test -> tested（需通过测试同学测试） -> done
• 将 PR 添加上 pr/reviewable

CheckList（PR Reviewers）

确认已完成以下操作：

• 检查关联 Issue 「功能自测」部分内容
• 必要时打回 pr/reviewable，要求重新修改
• 及时 Approve

[codecov-commenter]

Codecov Report

Merging #1794 (4b0578e) into v2.4.2-dev (98bda8e) will increase coverage by 0.00%.
The diff coverage is 83.33%.

@@             Coverage Diff             @@
##           v2.4.2-dev    #1794   +/-   ##
===========================================
  Coverage       74.11%   74.11%           
===========================================
  Files             397      397           
  Lines           26919    26935   +16     
===========================================
+ Hits            19950    19962   +12     
- Misses           6969     6973    +4     

Files Changed	Coverage Δ
apps/node_man/serializers/ap.py	78.57% <50.00%> (-2.20%)	⬇️
...s/backend/subscription/steps/agent_adapter/base.py	100.00% <100.00%> (ø)
...eps/agent_adapter/config_context/context_helper.py	94.44% <100.00%> (+0.07%)	⬆️
...backend/subscription/steps/agent_adapter/legacy.py	90.21% <100.00%> (ø)

... and 3 files with indirect coverage changes