feat: Add tests for RichGraphPublisher and RichGraphWriter

- Implement unit tests for RichGraphPublisher to verify graph publishing to CAS.
- Implement unit tests for RichGraphWriter to ensure correct writing of canonical graphs and metadata.

feat: Implement AOC Guard validation logic

- Add AOC Guard validation logic to enforce document structure and field constraints.
- Introduce violation codes for various validation errors.
- Implement tests for AOC Guard to validate expected behavior.

feat: Create Console Status API client and service

- Implement ConsoleStatusClient for fetching console status and streaming run events.
- Create ConsoleStatusService to manage console status polling and event subscriptions.
- Add tests for ConsoleStatusClient to verify API interactions.

feat: Develop Console Status component

- Create ConsoleStatusComponent for displaying console status and run events.
- Implement UI for showing status metrics and handling user interactions.
- Add styles for console status display.

test: Add tests for Console Status store

- Implement tests for ConsoleStatusStore to verify event handling and state management.

src/__Libraries/StellaOps.Infrastructure.Postgres/Repositories/RepositoryBase.cs

@@ -125,6 +125,12 @@ public abstract class RepositoryBase<TDataSource> where TDataSource : DataSource
     protected static long? GetNullableInt64(NpgsqlDataReader reader, int ordinal)
         => reader.IsDBNull(ordinal) ? null : reader.GetInt64(ordinal);
 
+    /// <summary>
+    /// Gets a nullable decimal from the reader.
+    /// </summary>
+    protected static decimal? GetNullableDecimal(NpgsqlDataReader reader, int ordinal)
+        => reader.IsDBNull(ordinal) ? null : reader.GetDecimal(ordinal);
+
     /// <summary>
     /// Gets a nullable DateTimeOffset from the reader.
     /// </summary>