tests fixes and some product advisories tunes ups

src/Concelier/__Libraries/StellaOps.Concelier.Models/InMemoryStore/DriverStubs.cs

@@ -354,12 +354,21 @@ namespace StellaOps.Concelier.InMemoryRunner
 {
     public sealed class InMemoryDbRunner : IDisposable
     {
+        /// <summary>
+        /// Default PostgreSQL connection string for test database.
+        /// </summary>
+        private const string DefaultPostgresDsn = "Host=localhost;Port=5432;Database=concelier_test;Username=postgres;Password=postgres";
+
         public string ConnectionString { get; }
         public string DataDirectory { get; } = string.Empty;
 
         private InMemoryDbRunner(string connectionString) => ConnectionString = connectionString;
 
-        public static InMemoryDbRunner Start(bool singleNodeReplSet = false) => new("inmemory://localhost/fake");
+        /// <summary>
+        /// Starts the database runner with a valid PostgreSQL connection string.
+        /// The tests expect a PostgreSQL database to be running on localhost:5432.
+        /// </summary>
+        public static InMemoryDbRunner Start(bool singleNodeReplSet = false) => new(DefaultPostgresDsn);
 
         public void Dispose()
         {