feat: 规则审计-策略新增/编辑-后端接口 --story=121513458

[0RAJA]

1. 修复序列化器校验

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 50.00000% with 1 line in your changes missing coverage. Please review.

Project coverage is 63.12%. Comparing base (de756f3) to head (963b126).
Report is 3 commits behind head on feat_rule_audit.

Files with missing lines	Patch %	Lines
...rc/backend/services/web/strategy_v2/serializers.py	50.00%	1 Missing ⚠️

Additional details and impacted files

@@               Coverage Diff                @@
##           feat_rule_audit     #515   +/-   ##
================================================
  Coverage            63.12%   63.12%           
================================================
  Files                  531      531           
  Lines                17900    17898    -2     
================================================
- Hits                 11300    11299    -1     
+ Misses                6600     6599    -1     

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