OPC # 0006: OPC Git Trunk-Based management

Co-authored-by: Copilot <copilot@github.com>

ControlPlane.Api/Program.cs

@@ -163,4 +163,10 @@ await using (var cmd = ds.CreateCommand("""
     """))
     await cmd.ExecuteNonQueryAsync();
 
+// Idempotent column additions for schema migrations
+await using (var migCmd = ds.CreateCommand("""
+    ALTER TABLE release_record ADD COLUMN IF NOT EXISTS opc_numbers TEXT[] NOT NULL DEFAULT '{}';
+    """))
+    await migCmd.ExecuteNonQueryAsync();
+
 app.Run();