wip: doctor/cli/docs/api to vector db consolidation; api hardening for descriptions, tenant, and scopes; migrations and conversions of all DALs to EF v10

src/__Libraries/StellaOps.Eventing/Postgres/EventingDataSource.cs

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+// Copyright (c) StellaOps. Licensed under the BUSL-1.1.
+
+using Microsoft.Extensions.Logging;
+using Microsoft.Extensions.Options;
+using Npgsql;
+using StellaOps.Infrastructure.Postgres.Connections;
+using StellaOps.Infrastructure.Postgres.Options;
+
+namespace StellaOps.Eventing.Postgres;
+
+/// <summary>
+/// PostgreSQL data source for the Eventing module.
+/// Manages connections for timeline event storage and outbox processing.
+/// </summary>
+public sealed class EventingDataSource : DataSourceBase
+{
+    /// <summary>
+    /// Default schema name for Eventing tables.
+    /// </summary>
+    public const string DefaultSchemaName = "timeline";
+
+    /// <summary>
+    /// Creates a new Eventing data source.
+    /// </summary>
+    public EventingDataSource(IOptions<PostgresOptions> options, ILogger<EventingDataSource> logger)
+        : base(CreateOptions(options.Value), logger)
+    {
+    }
+
+    /// <inheritdoc />
+    protected override string ModuleName => "Eventing";
+
+    /// <inheritdoc />
+    protected override void ConfigureDataSourceBuilder(NpgsqlDataSourceBuilder builder)
+    {
+        base.ConfigureDataSourceBuilder(builder);
+        // No custom enum mappings required for the Eventing module.
+    }
+
+    private static PostgresOptions CreateOptions(PostgresOptions baseOptions)
+    {
+        if (string.IsNullOrWhiteSpace(baseOptions.SchemaName))
+        {
+            baseOptions.SchemaName = DefaultSchemaName;
+        }
+        return baseOptions;
+    }
+}