feat(iit-manager): Add WeChat Official Account integration for patient notifications

Features:
- PatientWechatCallbackController for URL verification and message handling
- PatientWechatService for template and customer messages
- Support for secure mode (message encryption/decryption)
- Simplified route /wechat/patient/callback for WeChat config
- Event handlers for subscribe/unsubscribe/text messages
- Template message for visit reminders

Technical details:
- Reuse @wecom/crypto for encryption (compatible with Official Account)
- Relaxed Fastify schema validation to prevent early request blocking
- Access token caching (7000s with 5min pre-refresh)
- Comprehensive logging for debugging

Testing: Local URL verification passed, ready for SAE deployment

Status: Code complete, waiting for WeChat platform configuration

extraction_service/.dockerignore

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extraction_service/operations/__init__.py

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extraction_service/operations/dropna.py

@@ -179,5 +179,6 @@ def get_missing_summary(df: pd.DataFrame) -> dict:
 
 
 
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extraction_service/operations/filter.py

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extraction_service/operations/unpivot.py

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extraction_service/test_dc_api.py

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extraction_service/test_execute_simple.py

@@ -79,5 +79,6 @@ except Exception as e:
 
 
 
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extraction_service/test_module.py

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