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/css-tree/lib/generator/create.js

@@ -1,50 +1,70 @@
-var sourceMap = require('./sourceMap');
-var hasOwnProperty = Object.prototype.hasOwnProperty;
+import { tokenize, Delim, WhiteSpace } from '../tokenizer/index.js';
+import { generateSourceMap } from './sourceMap.js';
+import * as tokenBefore from './token-before.js';
+
+const REVERSESOLIDUS = 0x005c; // U+005C REVERSE SOLIDUS (\)
 
 function processChildren(node, delimeter) {
-    var list = node.children;
-    var prev = null;
+    if (typeof delimeter === 'function') {
+        let prev = null;
 
-    if (typeof delimeter !== 'function') {
-        list.forEach(this.node, this);
-    } else {
-        list.forEach(function(node) {
+        node.children.forEach(node => {
             if (prev !== null) {
                 delimeter.call(this, prev);
             }
 
             this.node(node);
             prev = node;
-        }, this);
+        });
+
+        return;
     }
+
+    node.children.forEach(this.node, this);
 }
 
-module.exports = function createGenerator(config) {
-    function processNode(node) {
-        if (hasOwnProperty.call(types, node.type)) {
-            types[node.type].call(this, node);
-        } else {
-            throw new Error('Unknown node type: ' + node.type);
-        }
-    }
+function processChunk(chunk) {
+    tokenize(chunk, (type, start, end) => {
+        this.token(type, chunk.slice(start, end));
+    });
+}
 
-    var types = {};
+export function createGenerator(config) {
+    const types = new Map();
 
-    if (config.node) {
-        for (var name in config.node) {
-            types[name] = config.node[name].generate;
+    for (let [name, item] of Object.entries(config.node)) {
+        const fn = item.generate || item;
+
+        if (typeof fn === 'function') {
+            types.set(name, item.generate || item);
         }
     }
 
     return function(node, options) {
-        var buffer = '';
-        var handlers = {
-            children: processChildren,
-            node: processNode,
-            chunk: function(chunk) {
-                buffer += chunk;
+        let buffer = '';
+        let prevCode = 0;
+        let handlers = {
+            node(node) {
+                if (types.has(node.type)) {
+                    types.get(node.type).call(publicApi, node);
+                } else {
+                    throw new Error('Unknown node type: ' + node.type);
+                }
             },
-            result: function() {
+            tokenBefore: tokenBefore.safe,
+            token(type, value) {
+                prevCode = this.tokenBefore(prevCode, type, value);
+
+                this.emit(value, type, false);
+
+                if (type === Delim && value.charCodeAt(0) === REVERSESOLIDUS) {
+                    this.emit('\n', WhiteSpace, true);
+                }
+            },
+            emit(value) {
+                buffer += value;
+            },
+            result() {
                 return buffer;
             }
         };
@@ -55,10 +75,21 @@ module.exports = function createGenerator(config) {
             }
 
             if (options.sourceMap) {
-                handlers = sourceMap(handlers);
+                handlers = generateSourceMap(handlers);
+            }
+
+            if (options.mode in tokenBefore) {
+                handlers.tokenBefore = tokenBefore[options.mode];
             }
         }
 
+        const publicApi = {
+            node: (node) => handlers.node(node),
+            children: processChildren,
+            token: (type, value) => handlers.token(type, value),
+            tokenize: processChunk
+        };
+
         handlers.node(node);
 
         return handlers.result();