阶段4:格式自动识别 + flv.js 替换为 mpegts.js + 移动端 5 项修复 + 自动化冒烟测试

- 按 URL 扩展名自动识别插件(.m3u8→hls.js,.flv/.ts/.m2ts→mpegts.js),iOS 上 m3u8 仍走原生 HLS
- flv 播放改由 mpegts.js 承担,移除 flv.js 依赖,plug:'flv.js' 保留兼容别名
- 修复 plug:'dash.js' 调用不存在函数的死代码 bug
- mpegts 能力判断由 mseLivePlayback 放宽为 isSupported()(修复部分浏览器点播被误杀)
- 移动端:iOS 原生全屏状态同步、iPad/iPod UA 识别、X5 同层播放属性、进度/音量条触摸拖动、触摸坐标滚动偏移修正
- 新增 Playwright 冒烟测试(npm test)与支持 Range 的本地服务器(npm run serve)
- 文档说明:测试禁用 python http.server(不支持 Range,mp4 无法 seek)

package-lock.json

@@ -9,13 +9,13 @@
       "version": "0.1.0",
       "license": "MIT",
       "dependencies": {
-        "flv.js": "^1.6.2",
         "hls.js": "^1.6.10",
         "mpegts.js": "^1.8.0"
       },
       "devDependencies": {
         "@rollup/plugin-replace": "^6.0.3",
         "@rollup/plugin-terser": "^1.0.0",
+        "playwright": "^1.61.1",
         "rollup": "^4.62.2"
       }
     },
@@ -573,16 +573,6 @@
       "dev": true,
       "license": "MIT"
     },
-    "node_modules/flv.js": {
-      "version": "1.6.2",
-      "resolved": "https://registry.npmjs.org/flv.js/-/flv.js-1.6.2.tgz",
-      "integrity": "sha512-xre4gUbX1MPtgQRKj2pxJENp/RnaHaxYvy3YToVVCrSmAWUu85b9mug6pTXF6zakUjNP2lFWZ1rkSX7gxhB/2A==",
-      "license": "Apache-2.0",
-      "dependencies": {
-        "es6-promise": "^4.2.8",
-        "webworkify-webpack": "^2.1.5"
-      }
-    },
     "node_modules/fsevents": {
       "version": "2.3.3",
       "resolved": "https://registry.npmjs.org/fsevents/-/fsevents-2.3.3.tgz",
@@ -637,6 +627,53 @@
         "url": "https://github.com/sponsors/jonschlinkert"
       }
     },
+    "node_modules/playwright": {
+      "version": "1.61.1",
+      "resolved": "https://registry.npmjs.org/playwright/-/playwright-1.61.1.tgz",
+      "integrity": "sha512-DWnY5o3YbLWK4GovuAVwpqL+1VwGNdUGrRr++8j8PtQQzvAVZUIMjKQ90fY689sEJZJBbZVw1rXaOKSTitkzPQ==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "playwright-core": "1.61.1"
+      },
+      "bin": {
+        "playwright": "cli.js"
+      },
+      "engines": {
+        "node": ">=18"
+      },
+      "optionalDependencies": {
+        "fsevents": "2.3.2"
+      }
+    },
+    "node_modules/playwright-core": {
+      "version": "1.61.1",
+      "resolved": "https://registry.npmjs.org/playwright-core/-/playwright-core-1.61.1.tgz",
+      "integrity": "sha512-h7Qlt6m4REp25qvIdvbDtVmD4LqVXfpRxhORv9L0jzETM05p4fuPJ3dKyuSXQxDSbXnmS79HAgi9589lGSpLkg==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "bin": {
+        "playwright-core": "cli.js"
+      },
+      "engines": {
+        "node": ">=18"
+      }
+    },
+    "node_modules/playwright/node_modules/fsevents": {
+      "version": "2.3.2",
+      "resolved": "https://registry.npmjs.org/fsevents/-/fsevents-2.3.2.tgz",
+      "integrity": "sha512-xiqMQR4xAeHTuB9uWm+fFRcIOgKBMiOBP+eXiyT7jsgVCq1bkVygt00oASowB7EdtpOHaaPgKt812P9ab+DDKA==",
+      "dev": true,
+      "hasInstallScript": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "darwin"
+      ],
+      "engines": {
+        "node": "^8.16.0 || ^10.6.0 || >=11.0.0"
+      }
+    },
     "node_modules/rollup": {
       "version": "4.62.2",
       "resolved": "https://registry.npmjs.org/rollup/-/rollup-4.62.2.tgz",