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-select/lib/helpers/cache.js

@@ -0,0 +1,45 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.cacheParentResults = cacheParentResults;
+var querying_js_1 = require("./querying.js");
+/**
+ * Some selectors such as `:contains` and (non-relative) `:has` will only be
+ * able to match elements if their parents match the selector (as they contain
+ * a subset of the elements that the parent contains).
+ *
+ * This function wraps the given `matches` function in a function that caches
+ * the results of the parent elements, so that the `matches` function only
+ * needs to be called once for each subtree.
+ */
+function cacheParentResults(next, _a, matches) {
+    var adapter = _a.adapter, cacheResults = _a.cacheResults;
+    if (cacheResults === false || typeof WeakMap === "undefined") {
+        return function (elem) { return next(elem) && matches(elem); };
+    }
+    // Use a cache to avoid re-checking children of an element.
+    // @ts-expect-error `Node` is not extending object
+    var resultCache = new WeakMap();
+    function addResultToCache(elem) {
+        var result = matches(elem);
+        resultCache.set(elem, result);
+        return result;
+    }
+    return function cachedMatcher(elem) {
+        if (!next(elem))
+            return false;
+        if (resultCache.has(elem)) {
+            return resultCache.get(elem);
+        }
+        // Check all of the element's parents.
+        var node = elem;
+        do {
+            var parent = (0, querying_js_1.getElementParent)(node, adapter);
+            if (parent === null) {
+                return addResultToCache(elem);
+            }
+            node = parent;
+        } while (!resultCache.has(node));
+        return resultCache.get(node) && addResultToCache(elem);
+    };
+}
+//# sourceMappingURL=cache.js.map