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src/Policy/__Libraries/StellaOps.Policy.Storage.Postgres/ServiceCollectionExtensions.cs

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+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+using StellaOps.Infrastructure.Postgres;
+using StellaOps.Infrastructure.Postgres.Options;
+
+namespace StellaOps.Policy.Storage.Postgres;
+
+/// <summary>
+/// Extension methods for configuring Policy PostgreSQL storage services.
+/// </summary>
+public static class ServiceCollectionExtensions
+{
+    /// <summary>
+    /// Adds Policy PostgreSQL storage services.
+    /// </summary>
+    /// <param name="services">Service collection.</param>
+    /// <param name="configuration">Configuration root.</param>
+    /// <param name="sectionName">Configuration section name for PostgreSQL options.</param>
+    /// <returns>Service collection for chaining.</returns>
+    public static IServiceCollection AddPolicyPostgresStorage(
+        this IServiceCollection services,
+        IConfiguration configuration,
+        string sectionName = "Postgres:Policy")
+    {
+        services.Configure<PostgresOptions>(sectionName, configuration.GetSection(sectionName));
+        services.AddSingleton<PolicyDataSource>();
+
+        return services;
+    }
+
+    /// <summary>
+    /// Adds Policy PostgreSQL storage services with explicit options.
+    /// </summary>
+    /// <param name="services">Service collection.</param>
+    /// <param name="configureOptions">Options configuration action.</param>
+    /// <returns>Service collection for chaining.</returns>
+    public static IServiceCollection AddPolicyPostgresStorage(
+        this IServiceCollection services,
+        Action<PostgresOptions> configureOptions)
+    {
+        services.Configure(configureOptions);
+        services.AddSingleton<PolicyDataSource>();
+
+        return services;
+    }
+}