fix(www): theme-token gate false-positives on prose words containing CSS keywords (e.g. backfills)

Author: DevBot

tools/check-www-theme-tokens.test.ts

@@ -25,6 +25,7 @@ Deno.test('theme-token gate catches short hex only in CSS contexts', () => {
   const prose = findThemeTokenFailures('x.tsx', [
     'External adopter #390 and continued browser evidence.',
     '<strong>#390</strong>',
+    'Closes eight audit findings (#646–#653) and the changelog backfills a skipped hole.',
   ]);
   assertEquals(prose.length, 0);
 });

tools/check-www-theme-tokens.ts

@@ -21,7 +21,7 @@ const SCAN_ROOTS = ['www/app'];
 const SOURCE = /\.(ts|tsx)$/;
 const HEX_LONG = /#(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{8})\b/;
 const HEX_SHORT = /#(?:[0-9a-fA-F]{3,4})\b/;
-const CSS_KEYWORD = /color|background|border|shadow|fill|stroke|gradient|outline/i;
+const CSS_KEYWORD = /\b(?:color|background|border|shadow|fill|stroke|gradient|outline)\b/i;
 const FONT_FAMILY = /font-family\s*:\s*([^;]+);/;
 const FONT_SIZE_LITERAL = /font-size\s*:\s*[0-9.]+(?:px|rem|em)\b/;