Fix SCSS compilation for Sass 1.87+ deprecations

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

app/RSpade/Integrations/Scss/Scss_BundleProcessor.php

@@ -352,7 +352,7 @@ async function compile() {
             sourceMap: enableSourceMaps,
             sourceMapIncludeSources: true,
             verbose: !isProduction,  // Show all deprecation warnings in dev mode
-            silenceDeprecations: ['import'],  // Suppress @import deprecation warnings until Sass 3.0 migration
+            silenceDeprecations: ['import', 'if-function', 'global-builtin', 'color-functions'],  // Suppress deprecation warnings until Sass 3.0 migration
             loadPaths: [
                 path.dirname(inputFile),
                 basePath + '/rsx',