Add full-width closing bracket support after asciiend

Allow ］ (U+FF3D) after asciiend in ASCII content scanner.
This enables ASCII strings inside arrays with full-width brackets:
  var x = ［ascii...asciiend］

The parser now correctly recognizes this as an array containing
an ASCII string, not as a syntax error.

Fixes 1 additional parsing error.

grammar.js

@@ -175,6 +175,7 @@ module.exports = grammar({
             $.string,
             $.boolean,
             $.null,
+            $.ascii_string,
             $.array,
             $.member_expression,
             $.call_expression,
@@ -186,7 +187,6 @@ module.exports = grammar({
             $.parenthesized_expression,
             $.new_statement,
             $.import_expression,
-            $.ascii_string,
             $.color_code
         ),
 
@@ -282,10 +282,7 @@ module.exports = grammar({
 
         null: $ => 'null',
 
-        ascii_string: $ => choice(
+        ascii_string: $ => seq('ascii', $.ascii_content, 'asciiend')
-            seq('ascii', $.ascii_content, 'asciiend'),
-            seq(choice('[', '［'), 'ascii', $.ascii_content, 'asciiend', choice(']', '］'))
-        )
     },
 
     extras: $ => [

src/grammar.json

@@ -675,6 +675,10 @@
           "type": "SYMBOL",
           "name": "null"
         },
+        {
+          "type": "SYMBOL",
+          "name": "ascii_string"
+        },
         {
           "type": "SYMBOL",
           "name": "array"
@@ -719,10 +723,6 @@
           "type": "SYMBOL",
           "name": "import_expression"
         },
-        {
-          "type": "SYMBOL",
-          "name": "ascii_string"
-        },
         {
           "type": "SYMBOL",
           "name": "color_code"
@@ -1369,9 +1369,6 @@
       "value": "null"
     },
     "ascii_string": {
-      "type": "CHOICE",
-      "members": [
-        {
       "type": "SEQ",
       "members": [
         {
@@ -1387,51 +1384,6 @@
           "value": "asciiend"
         }
       ]
-        },
-        {
-          "type": "SEQ",
-          "members": [
-            {
-              "type": "CHOICE",
-              "members": [
-                {
-                  "type": "STRING",
-                  "value": "["
-                },
-                {
-                  "type": "STRING",
-                  "value": "［"
-                }
-              ]
-            },
-            {
-              "type": "STRING",
-              "value": "ascii"
-            },
-            {
-              "type": "SYMBOL",
-              "name": "ascii_content"
-            },
-            {
-              "type": "STRING",
-              "value": "asciiend"
-            },
-            {
-              "type": "CHOICE",
-              "members": [
-                {
-                  "type": "STRING",
-                  "value": "]"
-                },
-                {
-                  "type": "STRING",
-                  "value": "］"
-                }
-              ]
-            }
-          ]
-        }
-      ]
     }
   },
   "extras": [

src/scanner.c

@@ -138,7 +138,7 @@ bool tree_sitter_stonescript_external_scanner_scan(void *payload, TSLexer *lexer
           if (match && (lexer->lookahead == '\n' || lexer->lookahead == '\r' || 
                        lexer->lookahead == ' ' || lexer->lookahead == '\t' || 
                        lexer->lookahead == ',' || lexer->lookahead == ')' ||
-                       lexer->lookahead == ']' ||
+                       lexer->lookahead == ']' || lexer->lookahead == 0xFF3D ||  // ］ full-width
                        lexer->eof(lexer))) {
             lexer->result_symbol = ASCII_CONTENT;
             return has_content;