♻️ Move the keys store out of the publisher meta

DysonNetwork.Sphere/Migrations/20251229174336_AddPublisherKeys.cs

@@ -0,0 +1,40 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace DysonNetwork.Sphere.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddPublisherKeys : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<string>(
+                name: "private_key_pem",
+                table: "publishers",
+                type: "character varying(8192)",
+                maxLength: 8192,
+                nullable: true);
+
+            migrationBuilder.AddColumn<string>(
+                name: "public_key_pem",
+                table: "publishers",
+                type: "character varying(8192)",
+                maxLength: 8192,
+                nullable: true);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "private_key_pem",
+                table: "publishers");
+
+            migrationBuilder.DropColumn(
+                name: "public_key_pem",
+                table: "publishers");
+        }
+    }
+}