♻️后端Utils模块整改

[Summer-Si]

#1035

[codecov]

Codecov Report

❌ Patch coverage is 85.00000% with 6 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
backend/apps/user_management_app.py	42.85%	4 Missing ⚠️
backend/services/tool_configuration_service.py	90.00%	1 Missing ⚠️
backend/utils/prompt_template_utils.py	50.00%	1 Missing ⚠️

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