Add Azure Blob Storage archive & email safety net

- Add AzureBlobStorageService, DocumentArchiveSyncService, and related config for secondary PDF archiving of invoices/reminders
- Add SQL procs and schema changes for archive backfill
- Update invoice/reminder services to upload PDFs to blob storage
- Add telemetry counters and unit tests for blob storage/archive logic
- Add Fuchs:Email:OverrideRecipient config and enforce dev/test email redirect in ProcessWebComService, with tests
- Improve JS date parsing (German formats), stricter JSON date detection
- Increase widget SQL timeouts, update dependencies, docs, and project files

Fuchs/appsettings.Development.json

@@ -1,7 +1,8 @@
 {
   "ConnectionStrings": {
-    "ocms_ConnectionString": "Server=localhost;Database=ocms;User Id=DEV_USERNAME;Password=DEV_PASSWORD;TrustServerCertificate=True;",
-    "fuchs_fds_ConnectionString": "Server=localhost;Database=fuchs_fds;User Id=DEV_USERNAME;Password=DEV_PASSWORD;TrustServerCertificate=True;"
+    "fuchs_fds_ConnectionString": "Data Source=MSSQL4.NBG4.DOMAINXYZ.DE,10439;Initial Catalog=site_fuchs_dev;Persist Security Info=False;TrustServerCertificate=true;Encrypt=true;User ID={username};password='{password}';Connect Timeout=60;Load Balance Timeout=240;Max Pool Size=500;",
+    "fuchs_fds_username_Dev": "fuchs_dev",
+    "fuchs_fds_password_Dev": "!Po@cGZ5bUn37khO"
   },
   "Logging": {
     "LogLevel": {
@@ -12,9 +13,14 @@
   "Fuchs": {
     "FDS_Intranet_DebugState": true,
     "DevAutoLogin": true,
-    "DevAutoLoginEmail": "your.email@example.com",
+    "DevAutoLoginEmail": "info@processweb.de",
     "Email": {
-      "DevRedirectAddress": "service@emails.processweb.de"
+      "OverrideRecipient": "service@emails.processweb.de"
+    },
+    "AzureStorage": {
+      "Enabled": false,
+      "InvoiceContainer": "dev-fuchs-invoices",
+      "ReminderContainer": "dev-fuchs-reminders"
     }
   }
 }