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/locales/zh_CN.json

@@ -0,0 +1,48 @@
+{
+  "Commands:": "命令：",
+  "Options:": "选项：",
+  "Examples:": "示例：",
+  "boolean": "布尔",
+  "count": "计数",
+  "string": "字符串",
+  "number": "数字",
+  "array": "数组",
+  "required": "必需",
+  "default": "默认值",
+  "default:": "默认值:",
+  "choices:": "可选值:",
+  "generated-value": "生成的值",
+  "Not enough non-option arguments: got %s, need at least %s": {
+    "one": "缺少 non-option 参数：传入了 %s 个, 至少需要 %s 个",
+    "other": "缺少 non-option 参数：传入了 %s 个, 至少需要 %s 个"
+  },
+  "Too many non-option arguments: got %s, maximum of %s": {
+    "one": "non-option 参数过多：传入了 %s 个, 最大允许 %s 个",
+    "other": "non-option 参数过多：传入了 %s 个, 最大允许 %s 个"
+  },
+  "Missing argument value: %s": {
+    "one": "没有给此选项指定值：%s",
+    "other": "没有给这些选项指定值：%s"
+  },
+  "Missing required argument: %s": {
+    "one": "缺少必须的选项：%s",
+    "other": "缺少这些必须的选项：%s"
+  },
+  "Unknown argument: %s": {
+    "one": "无法识别的选项：%s",
+    "other": "无法识别这些选项：%s"
+  },
+  "Invalid values:": "无效的选项值：",
+  "Argument: %s, Given: %s, Choices: %s": "选项名称: %s, 传入的值: %s, 可选的值：%s",
+  "Argument check failed: %s": "选项值验证失败：%s",
+  "Implications failed:": "缺少依赖的选项：",
+  "Not enough arguments following: %s": "没有提供足够的值给此选项：%s",
+  "Invalid JSON config file: %s": "无效的 JSON 配置文件：%s",
+  "Path to JSON config file": "JSON 配置文件的路径",
+  "Show help": "显示帮助信息",
+  "Show version number": "显示版本号",
+  "Did you mean %s?": "是指 %s?",
+  "Arguments %s and %s are mutually exclusive" : "选项 %s 和 %s 是互斥的",
+  "Positionals:": "位置：",
+  "command": "命令"
+}