Mark TapiContact properties as required

Silences nullable-reference warnings (CS8618) using the same
pattern already applied to Availability.MA_USER_NAME.

server/src/CPATapi.Server/Models/TapiContact.cs

@@ -2,9 +2,9 @@ namespace CPATapi.Server.Models;
 
 public class TapiContact
 {
-    public string TD_ID { get; set; }
-    public string TD_NAME { get; set; }
-    public string TD_NUMBER { get; set; }
-    public string TD_NUMBER_TAPI { get; set; }
-    public string TD_MEDIUM { get; set; }
+    public required string TD_ID { get; set; }
+    public required string TD_NAME { get; set; }
+    public required string TD_NUMBER { get; set; }
+    public required string TD_NUMBER_TAPI { get; set; }
+    public required string TD_MEDIUM { get; set; }
 }

server/src/CPATapi.Server/Repository/ZeitConsensRepository.cs

@@ -31,6 +31,7 @@ internal class ZeitConsensRepository(IConfiguration config) : Repository(config)
         ) buLast
         WHERE
           ma.MA_USER_AKTIV = 1
+          AND us.US_ACTIVE = 1
         """;
 
     public async Task<IEnumerable<Availability>> GetUsersAvailabilityAsync(DateTime from, DateTime to)