feat: 字段下钻支持关联多个工具 --story=126594081

[v-ljt]

No description provided.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 55.81395% with 19 lines in your changes missing coverage. Please review.
✅ Project coverage is 77.20%. Comparing base (cfa8cad) to head (603a728).

Files with missing lines	Patch %	Lines
..._v2/migrations/0018_update_drill_config_to_list.py	38.09%	13 Missing ⚠️
...ool/migrations/0005_update_drill_config_to_list.py	61.53%	5 Missing ⚠️
src/backend/services/web/strategy_v2/resources.py	83.33%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1121      +/-   ##
==========================================
- Coverage   77.24%   77.20%   -0.04%     
==========================================
  Files         625      627       +2     
  Lines       27912    27948      +36     
==========================================
+ Hits        21561    21578      +17     
- Misses       6351     6370      +19     

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