Initial commit: Aeroflot Flights Web - Angular 12 baseline

- Angular 12 application with PrimeNG components
- 5 existing Cypress e2e test suites
- SCSS styling with BEM naming convention
- i18n support (10 languages)
- Leaflet map integration
- Complete component hierarchy and routing structure

This baseline will be used for Angular → React migration.

ClientApp/node_modules/rrweb-cssom/lib/CSSStartingStyleRule.js

@@ -0,0 +1,37 @@
+//.CommonJS
+var CSSOM = {
+	CSSRule: require("./CSSRule").CSSRule
+};
+///CommonJS
+
+
+/**
+ * @constructor
+ * @see http://www.w3.org/TR/shadow-dom/#host-at-rule
+ */
+CSSOM.CSSStartingStyleRule = function CSSStartingStyleRule() {
+	CSSOM.CSSRule.call(this);
+	this.cssRules = [];
+};
+
+CSSOM.CSSStartingStyleRule.prototype = new CSSOM.CSSRule();
+CSSOM.CSSStartingStyleRule.prototype.constructor = CSSOM.CSSStartingStyleRule;
+CSSOM.CSSStartingStyleRule.prototype.type = 1002;
+//FIXME
+//CSSOM.CSSStartingStyleRule.prototype.insertRule = CSSStyleSheet.prototype.insertRule;
+//CSSOM.CSSStartingStyleRule.prototype.deleteRule = CSSStyleSheet.prototype.deleteRule;
+
+Object.defineProperty(CSSOM.CSSStartingStyleRule.prototype, "cssText", {
+	get: function() {
+		var cssTexts = [];
+		for (var i=0, length=this.cssRules.length; i < length; i++) {
+			cssTexts.push(this.cssRules[i].cssText);
+		}
+		return "@starting-style {" + cssTexts.join("") + "}";
+	}
+});
+
+
+//.CommonJS
+exports.CSSStartingStyleRule = CSSOM.CSSStartingStyleRule;
+///CommonJS