huanld
cecde2bc1c
feat: standalone ExcelToPdfService - ASP.NET Core 8 + Syncfusion
- Services/ExcelToPdfService.cs: core conversion logic (XlsIORenderer)
- Controllers/ExcelToPdfController.cs: REST API endpoints
* POST /api/ExcelToPdf/convert (file upload)
* POST /api/ExcelToPdf/convert-by-path (server path)
* GET /api/ExcelToPdf/health
- Program.cs: minimal API setup, 50MB upload limit
- appsettings.json: port 5200, Syncfusion license
- Syncfusion 21.1.37 (XlsIO + Pdf + XlsIORenderer)
- Binary signed: Azure Trusted Signing (Private Trust)