Streams refactoring

Src/AST/Myc.Ast.Evaluator.pas

@@ -62,7 +62,6 @@ uses
     Myc.Data.Decimal,
     Myc.Data.Series,
     Myc.Data.Stream,
-    Myc.Data.Stream.Pipes,
     Myc.Ast.Types;
 
 type
@@ -602,9 +601,7 @@ begin
     // Compile the transformation function
     lambdaFunc := Visit(N.Transformation).AsMethod();
 
-    // WARNING: If this is executing dynamically (without TypeChecker), StaticType is Unknown.
-    // Pipe creation REQUIRES the output definition.
-    // Fixed: Allow both stRecord and stRecordSeries (as TypeChecker correctly assigns stRecordSeries for Pipe nodes)
+    // Allow both stRecord and stRecordSeries (as TypeChecker correctly assigns stRecordSeries for Pipe nodes)
     if (N.StaticType.Kind <> stRecordSeries) and (N.StaticType.Kind <> stRecord) then
         raise EEvaluatorException.Create('Pipe requires Type Checking to determine output structure (RecordDefinition).');