hotfix(dc/tool-c): Fix compute formula validation and binning NaN serialization

Critical fixes:
1. Compute column: Add Chinese comma support in formula validation
   - Problem: Formula with Chinese comma failed validation
   - Fix: Add Chinese comma character to allowed_chars regex
   - Example: Support formulas like 'col1（kg）+ col2，col3'

2. Binning operation: Fix NaN serialization error
   - Problem: 'Out of range float values are not JSON compliant: nan'
   - Fix: Enhanced NaN/inf handling in binning endpoint
   - Added np.inf/-np.inf replacement before JSON serialization
   - Added manual JSON serialization with NaN->null conversion

3. Enhanced all operation endpoints for consistency
   - Updated conditional, dropna endpoints with same NaN/inf handling
   - Ensures all operations return JSON-compliant data

Modified files:
- extraction_service/operations/compute.py: Add Chinese comma to regex
- extraction_service/main.py: Enhanced NaN handling in binning/conditional/dropna

Status: Hotfix complete, ready for testing

backend/src/modules/asl/fulltext-screening/__tests__/api-integration-test.ts

@@ -308,3 +308,4 @@ runTests().catch((error) => {
 
 
 
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backend/src/modules/asl/fulltext-screening/__tests__/e2e-real-test-v2.ts

@@ -249,3 +249,4 @@ runTest()
 
 
 
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backend/src/modules/asl/fulltext-screening/__tests__/fulltext-screening-api.http

@@ -287,3 +287,4 @@ Content-Type: application/json
 
 
 
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backend/src/modules/asl/fulltext-screening/services/ExcelExporter.ts

@@ -366,3 +366,4 @@ export class ExcelExporter {
 
 
 
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backend/src/modules/dc/tool-b/services/ConflictDetectionService.ts

@@ -223,3 +223,4 @@ export const conflictDetectionService = new ConflictDetectionService();
 
 
 
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backend/src/modules/dc/tool-b/services/TemplateService.ts

@@ -251,3 +251,4 @@ export const templateService = new TemplateService();
 
 
 
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backend/src/modules/dc/tool-c/README.md

@@ -173,3 +173,4 @@ curl -X POST http://localhost:3000/api/v1/dc/tool-c/test/execute \
 
 
 
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backend/src/modules/dc/tool-c/controllers/StreamAIController.ts

@@ -227,3 +227,4 @@ export const streamAIController = new StreamAIController();
 
 
 
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