chore: remove NetEase lyrics fallback from Android and web

NetEase returned wrong/unsynced results. lrclib with exact + fuzzy
search is sufficient; no third-party Chinese platform needed.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

android/app/src/main/kotlin/com/novasonic/app/api/LrcLibClient.kt

@@ -10,7 +10,6 @@ import io.ktor.http.*
 import io.ktor.serialization.kotlinx.json.*
 import kotlinx.coroutines.async
 import kotlinx.coroutines.coroutineScope
-import kotlinx.coroutines.withTimeoutOrNull
 import kotlinx.serialization.Serializable
 import kotlinx.serialization.json.Json
 
@@ -26,16 +25,6 @@ data class LrcLibResponse(
     val syncedLyrics: String? = null,
 )
 
-@Serializable
-private data class NetEaseSearchResp(val result: NetEaseResult? = null, val code: Int = 0)
-@Serializable
-private data class NetEaseResult(val songs: List<NetEaseSong> = emptyList())
-@Serializable
-private data class NetEaseSong(val id: Long = 0, val duration: Long = 0)
-@Serializable
-private data class NetEaseLyricsResp(val lrc: NetEaseLrc? = null, val code: Int = 0)
-@Serializable
-private data class NetEaseLrc(val lyric: String? = null)
 
 data class LrcLine(val timeMs: Long, val text: String)
 
@@ -115,15 +104,8 @@ object LrcLibClient {
                 ?: bestMatch(titleDef.await(), durationSecs)
         }
 
-        if (lrclibResult != null) return lrclibResult.also { cache[cacheKey] = it }
-
-        // 4. NetEase fallback
-        val neLrc = withTimeoutOrNull(8_000) {
-            runCatching { netEaseLyrics(artist, title, durationSecs) }.getOrNull()
-        }
-        val result = if (!neLrc.isNullOrBlank()) LrcLibResponse(syncedLyrics = neLrc) else null
-        cache[cacheKey] = result
-        return result
+        cache[cacheKey] = lrclibResult
+        return lrclibResult
     }
 
     private fun LrcLibResponse?.hasContent() =
@@ -142,28 +124,4 @@ object LrcLibClient {
         }
     }
 
-    private suspend fun netEaseLyrics(artist: String, title: String, durationSecs: Int?): String? {
-        val search = client.get("https://music.163.com/api/search/get") {
-            parameter("s", "$artist $title".trim())
-            parameter("type", 1)
-            parameter("limit", 5)
-            header("Referer", "https://music.163.com")
-        }.body<NetEaseSearchResp>()
-
-        val songs = search.result?.songs ?: return null
-        val song  = if (durationSecs != null && durationSecs > 0) {
-            val durMs = durationSecs * 1000L
-            songs.minByOrNull { kotlin.math.abs(it.duration - durMs) }
-                ?.takeIf { kotlin.math.abs(it.duration - durMs) <= 5000L }
-                ?: songs.firstOrNull()
-        } else songs.firstOrNull() ?: return null
-
-        return client.get("https://music.163.com/api/song/lyric") {
-            parameter("id", song!!.id)
-            parameter("lv", 1)
-            parameter("kv", 1)
-            parameter("tv", -1)
-            header("Referer", "https://music.163.com")
-        }.body<NetEaseLyricsResp>().lrc?.lyric?.takeIf { it.isNotBlank() }
-    }
 }