Fix dist script: point it at build:sass, not the removed build script

npm run dist called "npm run build", but that script had been renamed
to "build:sass" without updating the reference, so dist errored out
before ever running scripts/build-dist.js.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

package.json

@@ -8,8 +8,8 @@
     "dev:php": "php -S localhost:8000",
     "dev:sass": "sass --watch --source-map src/scss/styles.scss:styles.css",
     "dev:browser": "browser-sync start --proxy http://localhost:8000 --files \"*.php,admin/**/*.php,inc/**/*.php,main.js,styles.css\" --no-open",
-    "build": "sass --no-source-map src/scss/styles.scss:styles.css",
-    "dist": "npm run build && node scripts/build-dist.js"
+    "build:sass": "sass --no-source-map src/scss/styles.scss:styles.css",
+    "dist": "npm run build:sass && node scripts/build-dist.js"
   },
   "repository": {
     "type": "git",