Add unit tests for Fuchs_DataService and related components

- Introduced comprehensive unit tests for the Fuchs_DataService library, covering DATEV header formatting, CSV/XML generation, and FdsMfrClient construction.
- Implemented tests for FdsMfr.UpdateNeed parsing and FdsShared utility helpers, ensuring correct functionality and stability.
- Added tests for FdsConfig and FdsMfrClient to validate configuration resolution and client construction.

Document decisions on backend-authoritative invoice and reminder handling

- Created ADR 0008 to clarify that all invoice types and reminder stages are backend-authoritative during drafting and previewing.
- Established that all calculations and settings must be processed server-side, ensuring consistency between online editor and PDF outputs.

Define irreversible mutations for set-price modes in invoices

- Documented ADR 0009 to specify that the "Set mit Preis" and "Nur Set mit Preis" operations are irreversible mutations affecting service request blocks.
- Clarified that these operations are not display toggles but actual data changes, ensuring clear expectations for invoice handling.

Transition MFR ERP sync to in-process execution within the web app

- Created ADR 0010 to outline the migration of Fuchs_DataService from a standalone service to an in-process library within the Fuchs web application.
- Updated configuration and logging management to be handled by the host application, streamlining the sync process.

Add publish profile and periodic hosted service for job scheduling

- Introduced a publish profile for deployment to a specified folder.
- Implemented PeriodicHostedService to manage multiple independent jobs, including the MFR ERP sync, with configurable execution intervals.

Add dotnet-tools.json for EF Core CLI tools

- Included dotnet-tools.json to manage the version of dotnet-ef for Entity Framework Core migrations and commands.

Fuchs/appsettings.json

@@ -32,6 +32,7 @@
     "AzureBlobStorage_ConnectionString": "MANAGED_BY_KEYVAULT"
   },
   "Fuchs": {
+    "IsTestDeployment": true,
     "ocms_guid": "00094b8f-a822-4e9c-b627-87802f93fca8",
     "ocms_valid_locales_csv": "de,en",
     "ocms_default_locale": "de",
@@ -48,7 +49,7 @@
       "Enabled": false
     },
     "Email": {
-      "OverrideRecipient": ""
+      "OverrideRecipient": "info@processweb.de"
     },
     "StartupChecks": {
       "Enabled": false,
@@ -60,9 +61,9 @@
       "StartupEmailRecipientName": "Startup Monitor"
     },
     "AzureStorage": {
-      "Enabled": false,
-      "InvoiceContainer": "fuchs-invoices",
-      "ReminderContainer": "fuchs-reminders",
+      "Enabled": true,
+      "InvoiceContainer": "dev-fuchs-invoices",
+      "ReminderContainer": "dev-fuchs-reminders",
       "MetadataFields": [ "Id", "Version", "InvoiceId", "InvoiceTitle", "InvId", "DocumentName", "file_guid" ]
     },
     "Telemetry": {
@@ -71,6 +72,9 @@
     }
   },
   "Fds": {
+    "SyncEnabled": true,
+    "ExecutionFrequency_Minutes": 15,
+    "DebugDetails": false,
     "MFR_host": "portal.mobilefieldreport.com",
     "MFR_UserName": "MANAGED_BY_KEYVAULT",
     "MFR_Password": "MANAGED_BY_KEYVAULT"