feat: add @excluded annotation for documents and microflow activities

Support @excluded at two levels:
- Document-level: marks microflows/pages as excluded from the project
  (Mendix Excluded field), matching Studio Pro's "Exclude from project"
- Activity-level: disables individual microflow activities (Disabled
  field), matching Studio Pro's grey-out behavior

Syntax:
  @excluded
  CREATE MICROFLOW Mod.Old () BEGIN
    @excluded
    LOG INFO 'deprecated';
  END;

DESCRIBE emits @excluded for excluded documents and disabled activities.

Also restructures RENAME grammar rule to use renameTarget subrule for
ANTLR compatibility (separate keyword accessors weren't generated for
alternatives using different tokens).

Closes #150

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: ako

mdl/ast/ast_microflow.go

@@ -53,6 +53,7 @@ type CreateMicroflowStmt struct {
 	Comment        string
 	Folder         string // Folder path within module (e.g., "Resources/Images")
 	CreateOrModify bool
+	Excluded       bool // @excluded — document excluded from project
 }
 
 func (s *CreateMicroflowStmt) isStatement() {}
@@ -105,12 +106,13 @@ type RaiseErrorStmt struct {
 func (s *RaiseErrorStmt) isMicroflowStatement() {}
 
 // ActivityAnnotations holds metadata annotations for microflow activities.
-// These are emitted as @position, @caption, @color, @annotation lines in MDL.
+// These are emitted as @position, @caption, @color, @annotation, @excluded lines in MDL.
 type ActivityAnnotations struct {
 	Position       *Position // @position(x, y)
 	Caption        string    // @caption 'text'
 	Color          string    // @color Green
 	AnnotationText string    // @annotation 'text'
+	Excluded       bool      // @excluded
 }
 
 // ChangeItem represents a single assignment in CREATE/CHANGE: Attr = expr

mdl/ast/ast_page_v3.go

@@ -30,6 +30,7 @@ type CreatePageStmtV3 struct {
 	Documentation string
 	IsReplace     bool // CREATE OR REPLACE
 	IsModify      bool // CREATE OR MODIFY
+	Excluded      bool // @excluded — document excluded from project
 }
 
 func (s *CreatePageStmtV3) isStatement() {}

mdl/executor/cmd_microflows_builder_annotations.go

@@ -109,14 +109,14 @@ func (fb *flowBuilder) applyAnnotations(activityID model.ID, ann *ast.ActivityAn
 		return
 	}
 
-	// Find the object by ID for @caption and @color
-	if ann.Caption != "" || ann.Color != "" {
+	// Find the object by ID for @caption, @color, and @excluded
+	if ann.Caption != "" || ann.Color != "" || ann.Excluded {
 		for _, obj := range fb.objects {
 			if obj.GetID() != activityID {
 				continue
 			}
 
-			// @caption and @color — only applicable to ActionActivity
+			// @caption, @color, and @excluded — only applicable to ActionActivity
 			if activity, ok := obj.(*microflows.ActionActivity); ok {
 				if ann.Caption != "" {
 					activity.Caption = ann.Caption
@@ -125,6 +125,9 @@ func (fb *flowBuilder) applyAnnotations(activityID model.ID, ann *ast.ActivityAn
 				if ann.Color != "" {
 					activity.BackgroundColor = ann.Color
 				}
+				if ann.Excluded {
+					activity.Disabled = true
+				}
 			}
 
 			break

mdl/executor/cmd_microflows_create.go

@@ -81,7 +81,7 @@ func (e *Executor) execCreateMicroflow(s *ast.CreateMicroflowStmt) error {
 		Documentation:            s.Documentation,
 		AllowConcurrentExecution: true, // Default: allow concurrent execution
 		MarkAsUsed:               false,
-		Excluded:                 false,
+		Excluded:                 s.Excluded,
 	}
 
 	// Build entity resolver function for parameter/return types

mdl/executor/cmd_microflows_show.go

@@ -310,6 +310,11 @@ func (e *Executor) describeMicroflow(name ast.QualifiedName) error {
 		lines = append(lines, " */")
 	}
 
+	// @excluded annotation
+	if targetMf.Excluded {
+		lines = append(lines, "@excluded")
+	}
+
 	// CREATE MICROFLOW header
 	qualifiedName := name.Module + "." + name.Name
 	if len(targetMf.Parameters) > 0 {

mdl/executor/cmd_microflows_show_helpers.go

@@ -69,8 +69,11 @@ func emitObjectAnnotations(obj microflows.MicroflowObject, lines *[]string, inde
 	pos := obj.GetPosition()
 	*lines = append(*lines, indentStr+fmt.Sprintf("@position(%d, %d)", pos.X, pos.Y))
 
-	// @caption and @color (only for ActionActivity)
+	// @excluded, @caption, and @color (only for ActionActivity)
 	if activity, ok := obj.(*microflows.ActionActivity); ok {
+		if activity.Disabled {
+			*lines = append(*lines, indentStr+"@excluded")
+		}
 		if !activity.AutoGenerateCaption && activity.Caption != "" {
 			escapedCaption := strings.ReplaceAll(activity.Caption, "'", "''")
 			*lines = append(*lines, indentStr+fmt.Sprintf("@caption '%s'", escapedCaption))

mdl/executor/cmd_pages_builder_v3.go

@@ -39,7 +39,7 @@ func (pb *pageBuilder) buildPageV3(s *ast.CreatePageStmtV3) (*pages.Page, error)
 		Documentation: s.Documentation,
 		URL:           s.URL,
 		MarkAsUsed:    false,
-		Excluded:      false,
+		Excluded:      s.Excluded,
 	}
 
 	// Set title

mdl/executor/cmd_pages_describe.go

@@ -85,6 +85,11 @@ func (e *Executor) describePage(name ast.QualifiedName) error {
 		}
 	}
 
+	// @excluded annotation
+	if foundPage.Excluded {
+		fmt.Fprintln(e.output, "@excluded")
+	}
+
 	// V3 syntax: CREATE PAGE Module.Page (Title: '...', Layout: ..., Params: { })
 	header := fmt.Sprintf("CREATE OR MODIFY PAGE %s.%s", modName, foundPage.Name)
 	props := []string{}

mdl/grammar/MDLParser.g4

@@ -277,16 +277,14 @@ dropStatement
     ;
 
 renameStatement
-    : RENAME ENTITY qualifiedName TO identifierOrKeyword (DRY RUN)?
-    | RENAME MICROFLOW qualifiedName TO identifierOrKeyword (DRY RUN)?
-    | RENAME NANOFLOW qualifiedName TO identifierOrKeyword (DRY RUN)?
-    | RENAME PAGE qualifiedName TO identifierOrKeyword (DRY RUN)?
-    | RENAME ENUMERATION qualifiedName TO identifierOrKeyword (DRY RUN)?
-    | RENAME ASSOCIATION qualifiedName TO identifierOrKeyword (DRY RUN)?
-    | RENAME CONSTANT qualifiedName TO identifierOrKeyword (DRY RUN)?
+    : RENAME renameTarget qualifiedName TO identifierOrKeyword (DRY RUN)?
     | RENAME MODULE identifierOrKeyword TO identifierOrKeyword (DRY RUN)?
     ;
 
+renameTarget
+    : ENTITY | MICROFLOW | NANOFLOW | PAGE | ENUMERATION | ASSOCIATION | CONSTANT
+    ;
+
 /**
  * Moves a document to a different folder or module.
  *