feat: unlock 1080P+ on Android via DASH streaming

- getPlayUrl uses fnval=16 (DASH) on Android, keeping fnval=0/html5 for iOS/web
- New utils/dash.ts builds a valid DASH MPD from Bilibili's segmentBase ranges
  and returns it as a data: URI for ExoPlayer consumption
- NativeVideoPlayer selects DASH path (type='mpd') or durl fallback automatically
- Extend PlayUrlResponse types with DashVideoItem/DashAudioItem/DashSegmentBase

package-lock.json

@@ -23,6 +23,7 @@
         "react-native": "0.83.2",
         "react-native-safe-area-context": "~5.6.2",
         "react-native-screens": "~4.23.0",
+        "react-native-video": "^6.19.0",
         "react-native-web": "^0.21.0",
         "react-native-webview": "13.16.0",
         "zustand": "^5.0.11"
@@ -7756,6 +7757,16 @@
         "react-native": "*"
       }
     },
+    "node_modules/react-native-video": {
+      "version": "6.19.0",
+      "resolved": "https://registry.npmjs.org/react-native-video/-/react-native-video-6.19.0.tgz",
+      "integrity": "sha512-JVojWIxwuH5C3RjVrF4UyuweuOH/Guq/W2xeN9zugePXZI8Xn/j6/oU94gCWHaFzkR/HGeJpqMq+l9aEHSnpIQ==",
+      "license": "MIT",
+      "peerDependencies": {
+        "react": "*",
+        "react-native": "*"
+      }
+    },
     "node_modules/react-native-web": {
       "version": "0.21.2",
       "resolved": "https://registry.npmjs.org/react-native-web/-/react-native-web-0.21.2.tgz",