feat(security,ui): self-host React deps, Tailwind, fonts; strict CSP; local QR; better selection state

Replace CDN React/ReactDOM/Babel with local libs; remove Babel and inline scripts
Build Tailwind locally, add safelist; switch to assets/tailwind.css
Self-host Font Awesome and Inter (CSS + woff2); remove external font CDNs
Implement strict CSP (no unsafe-inline/eval; scripts/styles/fonts from self)
Extract inline handlers; move PWA scripts to external files
Add local QR code generation (qrcode lib) and remove api.qrserver.com
Improve SessionTypeSelector visual selection (highlighted background and ring)
Keep PWA working with service worker and offline assets
Refs: CSP hardening, offline-first, no external dependencies

node_modules/yargs/build/lib/middleware.js

@@ -0,0 +1,57 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.applyMiddleware = exports.commandMiddlewareFactory = exports.globalMiddlewareFactory = void 0;
+const argsert_1 = require("./argsert");
+const is_promise_1 = require("./is-promise");
+function globalMiddlewareFactory(globalMiddleware, context) {
+    return function (callback, applyBeforeValidation = false) {
+        argsert_1.argsert('<array|function> [boolean]', [callback, applyBeforeValidation], arguments.length);
+        if (Array.isArray(callback)) {
+            for (let i = 0; i < callback.length; i++) {
+                if (typeof callback[i] !== 'function') {
+                    throw Error('middleware must be a function');
+                }
+                callback[i].applyBeforeValidation = applyBeforeValidation;
+            }
+            Array.prototype.push.apply(globalMiddleware, callback);
+        }
+        else if (typeof callback === 'function') {
+            callback.applyBeforeValidation = applyBeforeValidation;
+            globalMiddleware.push(callback);
+        }
+        return context;
+    };
+}
+exports.globalMiddlewareFactory = globalMiddlewareFactory;
+function commandMiddlewareFactory(commandMiddleware) {
+    if (!commandMiddleware)
+        return [];
+    return commandMiddleware.map(middleware => {
+        middleware.applyBeforeValidation = false;
+        return middleware;
+    });
+}
+exports.commandMiddlewareFactory = commandMiddlewareFactory;
+function applyMiddleware(argv, yargs, middlewares, beforeValidation) {
+    const beforeValidationError = new Error('middleware cannot return a promise when applyBeforeValidation is true');
+    return middlewares
+        .reduce((acc, middleware) => {
+        if (middleware.applyBeforeValidation !== beforeValidation) {
+            return acc;
+        }
+        if (is_promise_1.isPromise(acc)) {
+            return acc
+                .then(initialObj => Promise.all([initialObj, middleware(initialObj, yargs)]))
+                .then(([initialObj, middlewareObj]) => Object.assign(initialObj, middlewareObj));
+        }
+        else {
+            const result = middleware(acc, yargs);
+            if (beforeValidation && is_promise_1.isPromise(result))
+                throw beforeValidationError;
+            return is_promise_1.isPromise(result)
+                ? result.then(middlewareObj => Object.assign(acc, middlewareObj))
+                : Object.assign(acc, result);
+        }
+    }, argv);
+}
+exports.applyMiddleware = applyMiddleware;