refactor: use identifiers instead of strings for image names

Mendix requires image names to be valid identifiers (CE7247).
Change IMAGE 'name' FROM FILE to IMAGE Name FROM FILE so invalid
names are caught at parse time. The imageName rule allows plain
identifiers, quoted identifiers, and common keywords.

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

Author: ako

docs-site/src/language/image-collections.md

@@ -24,7 +24,7 @@ CREATE IMAGE COLLECTION <Module>.<Name>
   [EXPORT LEVEL 'Hidden'|'Public']
   [COMMENT '<description>']
   [(
-    IMAGE '<name>' FROM FILE '<path>',
+    IMAGE <Name> FROM FILE '<path>',
     ...
   )];
 ```
@@ -33,7 +33,7 @@ CREATE IMAGE COLLECTION <Module>.<Name>
 |--------|-------------|---------|
 | `EXPORT LEVEL` | `'Hidden'` (internal to module) or `'Public'` (accessible from other modules) | `'Hidden'` |
 | `COMMENT` | Documentation for the collection | (none) |
-| `IMAGE ... FROM FILE` | Load an image from the filesystem into the collection | (none) |
+| `IMAGE Name FROM FILE` | Load an image from the filesystem into the collection | (none) |
 
 The image format is detected automatically from the file extension. Relative paths are resolved from the current working directory. Supported formats: PNG, SVG, GIF, JPEG, BMP, WebP.
 
@@ -52,16 +52,16 @@ CREATE IMAGE COLLECTION MyModule.StatusIcons
 
 -- With images from files
 CREATE IMAGE COLLECTION MyModule.NavigationIcons (
-  IMAGE 'home' FROM FILE 'assets/home.png',
-  IMAGE 'settings' FROM FILE 'assets/settings.svg'
+  IMAGE home FROM FILE 'assets/home.png',
+  IMAGE settings FROM FILE 'assets/settings.svg'
 );
 
 -- All options combined
 CREATE IMAGE COLLECTION MyModule.BrandAssets
   EXPORT LEVEL 'Public'
   COMMENT 'Company branding assets' (
-  IMAGE 'logo-dark' FROM FILE 'assets/logo-dark.png',
-  IMAGE 'logo-light' FROM FILE 'assets/logo-light.png'
+  IMAGE logo_dark FROM FILE 'assets/logo-dark.png',
+  IMAGE logo_light FROM FILE 'assets/logo-light.png'
 );
 ```
 

docs/01-project/MDL_QUICK_REFERENCE.md

@@ -309,7 +309,7 @@ CREATE OR REPLACE NAVIGATION Responsive
 |-----------|--------|-------|
 | Show collections | `SHOW IMAGE COLLECTION [IN Module];` | List all or filter by module |
 | Describe collection | `DESCRIBE IMAGE COLLECTION Module.Name;` | Full MDL output with embedded images |
-| Create collection | `CREATE IMAGE COLLECTION Module.Name [EXPORT LEVEL 'Hidden'\|'Public'] [COMMENT 'text'] [(IMAGE 'name' FROM FILE 'path', ...)];` | With or without images |
+| Create collection | `CREATE IMAGE COLLECTION Module.Name [EXPORT LEVEL 'Hidden'\|'Public'] [COMMENT 'text'] [(IMAGE Name FROM FILE 'path', ...)];` | With or without images |
 | Drop collection | `DROP IMAGE COLLECTION Module.Name;` | Removes collection and all embedded images |
 
 **Export levels:** `'Hidden'` (default, internal to module), `'Public'` (accessible from other modules).

mdl-examples/doctype-tests/17-image-collection-examples.mdl

@@ -73,8 +73,8 @@ CREATE IMAGE COLLECTION ImgTest.BrandAssets
  * Supported formats: PNG, SVG, GIF, JPEG, BMP, WebP
  */
 CREATE IMAGE COLLECTION ImgTest.NavigationIcons (
-  IMAGE 'cli_screenshot' FROM FILE '../../docs/images/mxcli-cli.png',
-  IMAGE 'repl_screenshot' FROM FILE '../../docs/images/mxcli-repl.png'
+  IMAGE cli_screenshot FROM FILE '../../docs/images/mxcli-cli.png',
+  IMAGE repl_screenshot FROM FILE '../../docs/images/mxcli-repl.png'
 );
 /
 
@@ -84,8 +84,8 @@ CREATE IMAGE COLLECTION ImgTest.NavigationIcons (
 CREATE IMAGE COLLECTION ImgTest.AppLogos
   EXPORT LEVEL 'Public'
   COMMENT 'Application logos for branding' (
-  IMAGE 'vscode_ext' FROM FILE '../../docs/images/mxcli-vscode-ext.png',
-  IMAGE 'catalog' FROM FILE '../../docs/images/mxcli-catalog.png'
+  IMAGE vscode_ext FROM FILE '../../docs/images/mxcli-vscode-ext.png',
+  IMAGE catalog_view FROM FILE '../../docs/images/mxcli-catalog.png'
 );
 /
 

mdl/executor/cmd_imagecollections.go

@@ -151,7 +151,7 @@ func (e *Executor) describeImageCollection(name ast.QualifiedName) error {
 		if i == len(ic.Images)-1 {
 			comma = ""
 		}
-		fmt.Fprintf(e.output, "    IMAGE '%s' FROM FILE '%s'%s\n", img.Name, filePath, comma)
+		fmt.Fprintf(e.output, "    IMAGE %s FROM FILE '%s'%s\n", img.Name, filePath, comma)
 	}
 
 	fmt.Fprintln(e.output, ");")

mdl/executor/cmd_misc.go

@@ -303,7 +303,7 @@ Image Collections:
   CREATE IMAGE COLLECTION Module.Name
     [EXPORT LEVEL 'Hidden'|'Public']
     [COMMENT 'description']
-    [(IMAGE 'name' FROM FILE 'path', ...)];
+    [(IMAGE Name FROM FILE 'path', ...)];
   /
 
   DROP IMAGE COLLECTION Module.Name;

mdl/grammar/MDLParser.g4

@@ -792,7 +792,13 @@ imageCollectionBody
     ;
 
 imageCollectionItem
-    : IMAGE name=STRING_LITERAL FROM FILE_KW path=STRING_LITERAL   // IMAGE 'name' FROM FILE '/path/to/file.png'
+    : IMAGE imageName FROM FILE_KW path=STRING_LITERAL   // IMAGE MyIcon FROM FILE '/path/to/file.png'
+    ;
+
+imageName
+    : IDENTIFIER
+    | QUOTED_IDENTIFIER
+    | commonNameKeyword
     ;
 
 // =============================================================================