fix: TvcatHandler搜索和详情用HttpURLConnection替代Jsoup下载，绕过Jsoup默认UA被反爬拦截

app/src/main/java/com/videoapp/tv/engine/tvcat/TvcatHandler.kt

@@ -1,5 +1,6 @@
 package com.videoapp.tv.engine.tvcat
 
+import com.videoapp.tv.data.SearchResult
 import com.videoapp.tv.data.SiteConfig
 import com.videoapp.tv.engine.BaseSourceHandler
 import com.videoapp.tv.engine.Episode
@@ -8,7 +9,9 @@ import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.withContext
 import org.json.JSONObject
 import org.jsoup.Jsoup
+import java.net.HttpURLConnection
 import java.net.URL
+import java.net.URLEncoder
 
 class TvcatHandler : BaseSourceHandler(
     id = "tvcat",
@@ -33,12 +36,84 @@ class TvcatHandler : BaseSourceHandler(
         videoSelector = "video source, video[src]"
     )
 ) {
+    override suspend fun search(
+        keyword: String,
+        onResult: suspend (List<SearchResult>) -> Unit,
+        onError: suspend (String) -> Unit
+    ) {
+        try {
+            val results = withContext(Dispatchers.IO) {
+                val encoded = URLEncoder.encode(keyword, "UTF-8")
+                val searchUrl = "https://tvcat.cc/search?q=$encoded"
+                val conn = URL(searchUrl).openConnection() as HttpURLConnection
+                conn.setRequestProperty("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36")
+                conn.setRequestProperty("Accept-Language", "zh-CN,zh;q=0.9")
+                conn.connectTimeout = 15000
+                conn.readTimeout = 15000
+                val html = if (conn.responseCode == 200) {
+                    conn.inputStream.bufferedReader().use { it.readText() }
+                } else ""
+                conn.disconnect()
+
+                if (html.isEmpty()) return@withContext emptyList<SearchResult>()
+
+                val doc = Jsoup.parse(html)
+                val items = doc.select("li.col-md-2.col-sm-3.col-4")
+                val resultsList = mutableListOf<SearchResult>()
+
+                for (item in items) {
+                    try {
+                        val titleEl = item.selectFirst("a[title]") ?: continue
+                        val linkEl = item.selectFirst("a")
+                        val coverEl = item.selectFirst("img")
+                        val categoryEl = item.selectFirst(".text-muted")
+
+                        val title = titleEl.text().trim()
+                        val detailUrl = buildFullUrl(linkEl?.attr("href")?.trim() ?: "")
+                        val coverUrl = buildFullUrl(coverEl?.attr("src")?.trim() ?: "")
+                        val category = categoryEl?.text()?.trim() ?: ""
+
+                        if (title.isNotEmpty() && detailUrl.isNotEmpty()) {
+                            resultsList.add(
+                                SearchResult(
+                                    title = title,
+                                    coverUrl = coverUrl,
+                                    detailUrl = detailUrl,
+                                    category = category,
+                                    date = ""
+                                )
+                            )
+                        }
+                    } catch (_: Exception) {
+                    }
+                }
+                resultsList
+            }
+
+            if (results.isEmpty()) {
+                onError("未找到结果")
+            } else {
+                onResult(results)
+            }
+        } catch (e: Exception) {
+            onError("搜索失败: ${e.message}")
+        }
+    }
+
     override suspend fun extractVideos(detailUrl: String): List<PlaySource> =
         withContext(Dispatchers.IO) {
-            val doc = Jsoup.connect(detailUrl)
-                .header("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36")
-                .header("Accept-Language", "zh-CN,zh;q=0.9")
-                .timeout(15000).get()
+            val conn = URL(detailUrl).openConnection() as HttpURLConnection
+            conn.setRequestProperty("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36")
+            conn.setRequestProperty("Accept-Language", "zh-CN,zh;q=0.9")
+            conn.connectTimeout = 15000
+            conn.readTimeout = 15000
+            val html = if (conn.responseCode == 200) {
+                conn.inputStream.bufferedReader().use { it.readText() }
+            } else ""
+            conn.disconnect()
+            if (html.isEmpty()) return@withContext emptyList()
+
+            val doc = Jsoup.parse(html)
             val episodes = doc.select("li.list-inline-item a").mapNotNull { ep ->
                 val title = ep.text().trim()
                 val href = ep.attr("href").trim()