Fix code quality violations and exclude Manifest from checks

Document application modes (development/debug/production)
Add global file drop handler, order column normalization, SPA hash fix
Serve CDN assets via /_vendor/ URLs instead of merging into bundles
Add production minification with license preservation
Improve JSON formatting for debugging and production optimization
Add CDN asset caching with CSS URL inlining for production builds
Add three-mode system (development, debug, production)
Update Manifest CLAUDE.md to reflect helper class architecture
Refactor Manifest.php into helper classes for better organization
Pre-manifest-refactor checkpoint: Add app_mode documentation

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

node_modules/csso/lib/usage.js

@@ -1,15 +1,13 @@
-var hasOwnProperty = Object.prototype.hasOwnProperty;
+const { hasOwnProperty } = Object.prototype;
 
 function buildMap(list, caseInsensitive) {
-    var map = Object.create(null);
+    const map = Object.create(null);
 
     if (!Array.isArray(list)) {
         return null;
     }
 
-    for (var i = 0; i < list.length; i++) {
-        var name = list[i];
-
+    for (let name of list) {
         if (caseInsensitive) {
             name = name.toLowerCase();
         }
@@ -25,9 +23,9 @@ function buildList(data) {
         return null;
     }
 
-    var tags = buildMap(data.tags, true);
-    var ids = buildMap(data.ids);
-    var classes = buildMap(data.classes);
+    const tags = buildMap(data.tags, true);
+    const ids = buildMap(data.ids);
+    const classes = buildMap(data.classes);
 
     if (tags === null &&
         ids === null &&
@@ -36,30 +34,28 @@ function buildList(data) {
     }
 
     return {
-        tags: tags,
-        ids: ids,
-        classes: classes
+        tags,
+        ids,
+        classes
     };
 }
 
-function buildIndex(data) {
-    var scopes = false;
+export function buildIndex(data) {
+    let scopes = false;
 
     if (data.scopes && Array.isArray(data.scopes)) {
         scopes = Object.create(null);
 
-        for (var i = 0; i < data.scopes.length; i++) {
-            var list = data.scopes[i];
+        for (let i = 0; i < data.scopes.length; i++) {
+            const list = data.scopes[i];
 
             if (!list || !Array.isArray(list)) {
                 throw new Error('Wrong usage format');
             }
 
-            for (var j = 0; j < list.length; j++) {
-                var name = list[j];
-
+            for (const name of list) {
                 if (hasOwnProperty.call(scopes, name)) {
-                    throw new Error('Class can\'t be used for several scopes: ' + name);
+                    throw new Error(`Class can't be used for several scopes: ${name}`);
                 }
 
                 scopes[name] = i + 1;
@@ -70,10 +66,6 @@ function buildIndex(data) {
     return {
         whitelist: buildList(data),
         blacklist: buildList(data.blacklist),
-        scopes: scopes
+        scopes
     };
 }
-
-module.exports = {
-    buildIndex: buildIndex
-};