extract compile parse-error aggregation helper

Author: mgomes

docs/architecture.md

@@ -92,6 +92,7 @@ Key files:
 - `vibes/ast.go`
 - `vibes/execution_compile.go` (AST lowering into compiled script functions/classes)
 - `vibes/execution_compile_classes.go` (class/property/method lowering helpers for compile)
+- `vibes/execution_compile_errors.go` (parse error aggregation for compile failures)
 
 ## Modules (`require`)
 

vibes/execution_compile.go

@@ -1,7 +1,6 @@
 package vibes
 
 import (
-	"errors"
 	"fmt"
 )
 
@@ -36,17 +35,3 @@ func (e *Engine) Compile(source string) (*Script, error) {
 	script.bindFunctionOwnership()
 	return script, nil
 }
-
-func combineErrors(errs []error) error {
-	if len(errs) == 1 {
-		return errs[0]
-	}
-	msg := ""
-	for _, err := range errs {
-		if msg != "" {
-			msg += "\n\n"
-		}
-		msg += err.Error()
-	}
-	return errors.New(msg)
-}

vibes/execution_compile_errors.go

@@ -0,0 +1,17 @@
+package vibes
+
+import "errors"
+
+func combineErrors(errs []error) error {
+	if len(errs) == 1 {
+		return errs[0]
+	}
+	msg := ""
+	for _, err := range errs {
+		if msg != "" {
+			msg += "\n\n"
+		}
+		msg += err.Error()
+	}
+	return errors.New(msg)
+}