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/cjs/syntax/node/Declaration.cjs

@@ -0,0 +1,166 @@
+'use strict';
+
+const names = require('../../utils/names.cjs');
+const types = require('../../tokenizer/types.cjs');
+
+const EXCLAMATIONMARK = 0x0021; // U+0021 EXCLAMATION MARK (!)
+const NUMBERSIGN = 0x0023;      // U+0023 NUMBER SIGN (#)
+const DOLLARSIGN = 0x0024;      // U+0024 DOLLAR SIGN ($)
+const AMPERSAND = 0x0026;       // U+0026 AMPERSAND (&)
+const ASTERISK = 0x002A;        // U+002A ASTERISK (*)
+const PLUSSIGN = 0x002B;        // U+002B PLUS SIGN (+)
+const SOLIDUS = 0x002F;         // U+002F SOLIDUS (/)
+
+function consumeValueRaw() {
+    return this.Raw(this.consumeUntilExclamationMarkOrSemicolon, true);
+}
+
+function consumeCustomPropertyRaw() {
+    return this.Raw(this.consumeUntilExclamationMarkOrSemicolon, false);
+}
+
+function consumeValue() {
+    const startValueToken = this.tokenIndex;
+    const value = this.Value();
+
+    if (value.type !== 'Raw' &&
+        this.eof === false &&
+        this.tokenType !== types.Semicolon &&
+        this.isDelim(EXCLAMATIONMARK) === false &&
+        this.isBalanceEdge(startValueToken) === false) {
+        this.error();
+    }
+
+    return value;
+}
+
+const name = 'Declaration';
+const walkContext = 'declaration';
+const structure = {
+    important: [Boolean, String],
+    property: String,
+    value: ['Value', 'Raw']
+};
+
+function parse() {
+    const start = this.tokenStart;
+    const startToken = this.tokenIndex;
+    const property = readProperty.call(this);
+    const customProperty = names.isCustomProperty(property);
+    const parseValue = customProperty ? this.parseCustomProperty : this.parseValue;
+    const consumeRaw = customProperty ? consumeCustomPropertyRaw : consumeValueRaw;
+    let important = false;
+    let value;
+
+    this.skipSC();
+    this.eat(types.Colon);
+
+    const valueStart = this.tokenIndex;
+
+    if (!customProperty) {
+        this.skipSC();
+    }
+
+    if (parseValue) {
+        value = this.parseWithFallback(consumeValue, consumeRaw);
+    } else {
+        value = consumeRaw.call(this, this.tokenIndex);
+    }
+
+    if (customProperty && value.type === 'Value' && value.children.isEmpty) {
+        for (let offset = valueStart - this.tokenIndex; offset <= 0; offset++) {
+            if (this.lookupType(offset) === types.WhiteSpace) {
+                value.children.appendData({
+                    type: 'WhiteSpace',
+                    loc: null,
+                    value: ' '
+                });
+                break;
+            }
+        }
+    }
+
+    if (this.isDelim(EXCLAMATIONMARK)) {
+        important = getImportant.call(this);
+        this.skipSC();
+    }
+
+    // Do not include semicolon to range per spec
+    // https://drafts.csswg.org/css-syntax/#declaration-diagram
+
+    if (this.eof === false &&
+        this.tokenType !== types.Semicolon &&
+        this.isBalanceEdge(startToken) === false) {
+        this.error();
+    }
+
+    return {
+        type: 'Declaration',
+        loc: this.getLocation(start, this.tokenStart),
+        important,
+        property,
+        value
+    };
+}
+
+function generate(node) {
+    this.token(types.Ident, node.property);
+    this.token(types.Colon, ':');
+    this.node(node.value);
+
+    if (node.important) {
+        this.token(types.Delim, '!');
+        this.token(types.Ident, node.important === true ? 'important' : node.important);
+    }
+}
+
+function readProperty() {
+    const start = this.tokenStart;
+
+    // hacks
+    if (this.tokenType === types.Delim) {
+        switch (this.charCodeAt(this.tokenStart)) {
+            case ASTERISK:
+            case DOLLARSIGN:
+            case PLUSSIGN:
+            case NUMBERSIGN:
+            case AMPERSAND:
+                this.next();
+                break;
+
+            // TODO: not sure we should support this hack
+            case SOLIDUS:
+                this.next();
+                if (this.isDelim(SOLIDUS)) {
+                    this.next();
+                }
+                break;
+        }
+    }
+
+    if (this.tokenType === types.Hash) {
+        this.eat(types.Hash);
+    } else {
+        this.eat(types.Ident);
+    }
+
+    return this.substrToCursor(start);
+}
+
+// ! ws* important
+function getImportant() {
+    this.eat(types.Delim);
+    this.skipSC();
+
+    const important = this.consume(types.Ident);
+
+    // store original value in case it differ from `important`
+    // for better original source restoring and hacks like `!ie` support
+    return important === 'important' ? true : important;
+}
+
+exports.generate = generate;
+exports.name = name;
+exports.parse = parse;
+exports.structure = structure;
+exports.walkContext = walkContext;