feat: replace direct player with web browser for search results

- Add BrowserActivity with WebView, toolbar (back/forward/close), URL bar, progress bar
- SearchFragment: open BrowserActivity instead of PlayerActivity on result click
- Browser allows user to browse the video site directly before choosing to play

app/src/main/AndroidManifest.xml

@@ -34,6 +34,11 @@
             android:name=".SettingsActivity"
             android:exported="false" />
 
+        <activity
+            android:name=".BrowserActivity"
+            android:configChanges="orientation|screenSize|keyboardHidden"
+            android:exported="false" />
+
     </application>
 
 </manifest>

app/src/main/java/com/videoapp/tv/BrowserActivity.kt

@@ -0,0 +1,123 @@
+package com.videoapp.tv
+
+import android.annotation.SuppressLint
+import android.graphics.Bitmap
+import android.os.Bundle
+import android.view.KeyEvent
+import android.view.View
+import android.webkit.WebChromeClient
+import android.webkit.WebSettings
+import android.webkit.WebView
+import android.webkit.WebViewClient
+import android.widget.ImageButton
+import android.widget.ProgressBar
+import android.widget.TextView
+import androidx.appcompat.app.AppCompatActivity
+
+class BrowserActivity : AppCompatActivity() {
+
+    private lateinit var webView: WebView
+    private lateinit var progressBar: ProgressBar
+    private lateinit var tvUrl: TextView
+    private lateinit var btnBack: ImageButton
+    private lateinit var btnForward: ImageButton
+    private lateinit var btnClose: ImageButton
+
+    @SuppressLint("SetJavaScriptEnabled")
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_browser)
+
+        webView = findViewById(R.id.browser_webview)
+        progressBar = findViewById(R.id.browser_progress)
+        tvUrl = findViewById(R.id.tv_url)
+        btnBack = findViewById(R.id.btn_back_browser)
+        btnForward = findViewById(R.id.btn_forward_browser)
+        btnClose = findViewById(R.id.btn_close_browser)
+
+        val url = intent.getStringExtra("url") ?: ""
+        val title = intent.getStringExtra("title") ?: ""
+        supportActionBar?.title = title
+
+        setupWebView()
+        setupListeners()
+
+        if (url.isNotEmpty()) {
+            webView.loadUrl(url)
+        }
+    }
+
+    @SuppressLint("SetJavaScriptEnabled")
+    private fun setupWebView() {
+        webView.settings.apply {
+            javaScriptEnabled = true
+            domStorageEnabled = true
+            mediaPlaybackRequiresUserGesture = false
+            allowFileAccess = true
+            allowContentAccess = true
+            useWideViewPort = true
+            loadWithOverviewMode = true
+            setSupportZoom(true)
+            builtInZoomControls = true
+            displayZoomControls = false
+            mixedContentMode = WebSettings.MIXED_CONTENT_ALWAYS_ALLOW
+            cacheMode = WebSettings.LOAD_DEFAULT
+        }
+
+        webView.webViewClient = object : WebViewClient() {
+            override fun onPageStarted(view: WebView, url: String, favicon: Bitmap?) {
+                super.onPageStarted(view, url, favicon)
+                tvUrl.text = url
+                progressBar.visibility = View.VISIBLE
+                updateNavButtons()
+            }
+
+            override fun onPageFinished(view: WebView, url: String) {
+                super.onPageFinished(view, url)
+                tvUrl.text = url
+                progressBar.visibility = View.GONE
+                updateNavButtons()
+            }
+
+            @Deprecated("Deprecated in Java")
+            override fun shouldOverrideUrlLoading(view: WebView, url: String): Boolean {
+                view.loadUrl(url)
+                return true
+            }
+        }
+
+        webView.webChromeClient = object : WebChromeClient() {
+            override fun onProgressChanged(view: WebView, newProgress: Int) {
+                progressBar.progress = newProgress
+                if (newProgress == 100) {
+                    progressBar.visibility = View.GONE
+                }
+            }
+        }
+    }
+
+    private fun setupListeners() {
+        btnBack.setOnClickListener {
+            if (webView.canGoBack()) webView.goBack()
+        }
+
+        btnForward.setOnClickListener {
+            if (webView.canGoForward()) webView.goForward()
+        }
+
+        btnClose.setOnClickListener { finish() }
+    }
+
+    private fun updateNavButtons() {
+        btnBack.alpha = if (webView.canGoBack()) 1.0f else 0.4f
+        btnForward.alpha = if (webView.canGoForward()) 1.0f else 0.4f
+    }
+
+    override fun onKeyDown(keyCode: Int, event: KeyEvent): Boolean {
+        if (keyCode == KeyEvent.KEYCODE_BACK && webView.canGoBack()) {
+            webView.goBack()
+            return true
+        }
+        return super.onKeyDown(keyCode, event)
+    }
+}

app/src/main/java/com/videoapp/tv/ui/SearchFragment.kt

@@ -19,7 +19,7 @@ import androidx.lifecycle.lifecycleScope
 import androidx.recyclerview.widget.GridLayoutManager
 import androidx.recyclerview.widget.RecyclerView
 import com.videoapp.tv.R
-import com.videoapp.tv.PlayerActivity
+import com.videoapp.tv.BrowserActivity
 import com.videoapp.tv.SettingsActivity
 import com.videoapp.tv.data.AppDatabase
 import com.videoapp.tv.data.SearchHistory
@@ -185,10 +185,9 @@ class SearchFragment : Fragment() {
     }
 
     private fun openPlayer(result: SearchResult) {
-        val intent = Intent(requireContext(), PlayerActivity::class.java).apply {
+        val intent = Intent(requireContext(), BrowserActivity::class.java).apply {
-            putExtra("detail_url", result.detailUrl)
+            putExtra("url", result.detailUrl)
             putExtra("title", result.title)
-            putExtra("category", result.category)
         }
         startActivity(intent)
     }

app/src/main/res/layout/activity_browser.xml

@@ -0,0 +1,72 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:background="@color/background">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="48dp"
+        android:background="@color/surface"
+        android:gravity="center_vertical"
+        android:orientation="horizontal"
+        android:paddingStart="8dp"
+        android:paddingEnd="8dp">
+
+        <ImageButton
+            android:id="@+id/btn_back_browser"
+            android:layout_width="40dp"
+            android:layout_height="40dp"
+            android:background="?attr/selectableItemBackgroundBorderless"
+            android:src="@android:drawable/ic_menu_revert"
+            android:scaleType="centerInside"
+            android:contentDescription="后退" />
+
+        <ImageButton
+            android:id="@+id/btn_forward_browser"
+            android:layout_width="40dp"
+            android:layout_height="40dp"
+            android:background="?attr/selectableItemBackgroundBorderless"
+            android:src="@android:drawable/ic_media_ff"
+            android:scaleType="centerInside"
+            android:contentDescription="前进" />
+
+        <TextView
+            android:id="@+id/tv_url"
+            android:layout_width="0dp"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:ellipsize="end"
+            android:gravity="center_vertical"
+            android:maxLines="1"
+            android:paddingStart="8dp"
+            android:paddingEnd="8dp"
+            android:textColor="@color/text_secondary"
+            android:textSize="12sp" />
+
+        <ImageButton
+            android:id="@+id/btn_close_browser"
+            android:layout_width="40dp"
+            android:layout_height="40dp"
+            android:background="?attr/selectableItemBackgroundBorderless"
+            android:src="@android:drawable/ic_menu_close_clear_cancel"
+            android:scaleType="centerInside"
+            android:contentDescription="@string/back" />
+
+    </LinearLayout>
+
+    <ProgressBar
+        android:id="@+id/browser_progress"
+        style="?android:attr/progressBarStyleHorizontal"
+        android:layout_width="match_parent"
+        android:layout_height="3dp"
+        android:visibility="gone" />
+
+    <WebView
+        android:id="@+id/browser_webview"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_weight="1" />
+
+</LinearLayout>