diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index 97fa53e..e5f512e 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -4,11 +4,11 @@ plugins {
 }
 
 android {
-    namespace = "com.nodecast.tv"
+    namespace = "dev.castarr.tv"
     compileSdk = 35
 
     defaultConfig {
-        applicationId = "com.nodecast.tv"
+        applicationId = "dev.castarr.tv"
         minSdk = 23
         targetSdk = 35
         versionCode = 1
@@ -32,6 +32,7 @@ android {
         allWarningsAsErrors = true
     }
 
+
     lint {
         // Media3's UI classes are @UnstableApi; the opt-in lint check would
         // otherwise fail release builds.
@@ -49,3 +50,9 @@ dependencies {
     implementation("org.nanohttpd:nanohttpd-websocket:2.3.1")
     implementation("com.google.zxing:core:3.5.3")
 }
+
+// Full JDK for javac via toolchain (host may only have a JRE); resolved by
+// the foojay convention plugin in settings.
+kotlin {
+    jvmToolchain(17)
+}
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 177a50a..69c9686 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -15,7 +15,7 @@
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
         android:usesCleartextTraffic="true"
-        android:theme="@style/Theme.NodeCast">
+        android:theme="@style/Theme.Castarr">
 
         <activity
             android:name=".MainActivity"
diff --git a/app/src/main/assets/remote/index.html b/app/src/main/assets/remote/index.html
index 0bcd256..5871815 100644
--- a/app/src/main/assets/remote/index.html
+++ b/app/src/main/assets/remote/index.html
@@ -4,7 +4,7 @@
 <meta charset="utf-8">
 <meta name="viewport" content="width=device-width, initial-scale=1, viewport-fit=cover">
 <meta name="theme-color" content="#0a0b0d">
-<title>NodeCast Remote</title>
+<title>Castarr Remote</title>
 <link rel="stylesheet" href="https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600&display=swap">
 <style>
   * { margin: 0; padding: 0; box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
@@ -149,7 +149,7 @@
 <header>
   <div class="wordmark">
     <svg width="17" height="17" viewBox="0 0 24 24" fill="none" stroke="#5fd4c4" stroke-width="1.8" stroke-linecap="round" stroke-linejoin="round"><rect x="2" y="5" width="20" height="13" rx="2"/><path d="M8.5 22h7"/></svg>
-    NodeCast
+    Castarr
   </div>
   <div class="tvchip"><span class="dot off" id="conn-dot"></span><span id="tv-name">Getrennt</span></div>
 </header>
@@ -248,10 +248,10 @@
   // --- pairing credentials ---
   const params = new URLSearchParams(location.search);
   if (params.get('t')) {
-    localStorage.setItem('nodecast_token', params.get('t'));
+    localStorage.setItem('castarr_token', params.get('t'));
     history.replaceState(null, '', location.pathname);
   }
-  const getToken = () => localStorage.getItem('nodecast_token') || '';
+  const getToken = () => localStorage.getItem('castarr_token') || '';
   let manualCode = '';
 
   const deviceName = (() => {
@@ -312,7 +312,7 @@
       case 'welcome':
         state.authorized = true;
         state.retryDelay = 1000;
-        if (msg.token) localStorage.setItem('nodecast_token', msg.token);
+        if (msg.token) localStorage.setItem('castarr_token', msg.token);
         $('tv-name').textContent = msg.device || 'TV';
         if (msg.status) { state.status = msg.status; }
         if (msg.channels) { state.channels = msg.channels; }
@@ -336,7 +336,7 @@
         break;
       case 'error':
         if (msg.error === 'bad_code' || msg.error === 'rate_limited') {
-          localStorage.removeItem('nodecast_token');
+          localStorage.removeItem('castarr_token');
           manualCode = '';
           $('pair-error').textContent = msg.error === 'rate_limited'
             ? 'Zu viele Versuche — kurz warten.' : 'Falscher Code.';
diff --git a/app/src/main/java/com/nodecast/tv/MainActivity.kt b/app/src/main/java/dev/castarr/tv/MainActivity.kt
similarity index 97%
rename from app/src/main/java/com/nodecast/tv/MainActivity.kt
rename to app/src/main/java/dev/castarr/tv/MainActivity.kt
index 48f6f65..d2b27e8 100644
--- a/app/src/main/java/com/nodecast/tv/MainActivity.kt
+++ b/app/src/main/java/dev/castarr/tv/MainActivity.kt
@@ -1,4 +1,4 @@
-package com.nodecast.tv
+package dev.castarr.tv
 
 import android.app.Activity
 import android.graphics.Color
@@ -11,12 +11,12 @@ import android.view.View
 import android.widget.ImageView
 import android.widget.TextView
 import androidx.media3.ui.PlayerView
-import com.nodecast.tv.pairing.Pairing
-import com.nodecast.tv.pairing.Qr
-import com.nodecast.tv.player.PlayerController
-import com.nodecast.tv.playlist.Channel
-import com.nodecast.tv.playlist.PlaylistRepository
-import com.nodecast.tv.server.ControlServer
+import dev.castarr.tv.pairing.Pairing
+import dev.castarr.tv.pairing.Qr
+import dev.castarr.tv.player.PlayerController
+import dev.castarr.tv.playlist.Channel
+import dev.castarr.tv.playlist.PlaylistRepository
+import dev.castarr.tv.server.ControlServer
 import org.json.JSONObject
 
 class MainActivity : Activity(), ControlServer.Listener {
diff --git a/app/src/main/java/com/nodecast/tv/pairing/Pairing.kt b/app/src/main/java/dev/castarr/tv/pairing/Pairing.kt
similarity index 98%
rename from app/src/main/java/com/nodecast/tv/pairing/Pairing.kt
rename to app/src/main/java/dev/castarr/tv/pairing/Pairing.kt
index 8ff34af..d38ed82 100644
--- a/app/src/main/java/com/nodecast/tv/pairing/Pairing.kt
+++ b/app/src/main/java/dev/castarr/tv/pairing/Pairing.kt
@@ -1,4 +1,4 @@
-package com.nodecast.tv.pairing
+package dev.castarr.tv.pairing
 
 import android.content.Context
 import java.net.Inet4Address
diff --git a/app/src/main/java/com/nodecast/tv/pairing/Qr.kt b/app/src/main/java/dev/castarr/tv/pairing/Qr.kt
similarity index 96%
rename from app/src/main/java/com/nodecast/tv/pairing/Qr.kt
rename to app/src/main/java/dev/castarr/tv/pairing/Qr.kt
index 3571ad6..5e3873e 100644
--- a/app/src/main/java/com/nodecast/tv/pairing/Qr.kt
+++ b/app/src/main/java/dev/castarr/tv/pairing/Qr.kt
@@ -1,4 +1,4 @@
-package com.nodecast.tv.pairing
+package dev.castarr.tv.pairing
 
 import android.graphics.Bitmap
 import android.graphics.Color
diff --git a/app/src/main/java/com/nodecast/tv/player/PlayerController.kt b/app/src/main/java/dev/castarr/tv/player/PlayerController.kt
similarity index 99%
rename from app/src/main/java/com/nodecast/tv/player/PlayerController.kt
rename to app/src/main/java/dev/castarr/tv/player/PlayerController.kt
index d4b6e30..e79b286 100644
--- a/app/src/main/java/com/nodecast/tv/player/PlayerController.kt
+++ b/app/src/main/java/dev/castarr/tv/player/PlayerController.kt
@@ -1,4 +1,4 @@
-package com.nodecast.tv.player
+package dev.castarr.tv.player
 
 import android.content.Context
 import androidx.media3.common.MediaItem
diff --git a/app/src/main/java/com/nodecast/tv/playlist/Channel.kt b/app/src/main/java/dev/castarr/tv/playlist/Channel.kt
similarity index 96%
rename from app/src/main/java/com/nodecast/tv/playlist/Channel.kt
rename to app/src/main/java/dev/castarr/tv/playlist/Channel.kt
index dc6aec1..37c8b01 100644
--- a/app/src/main/java/com/nodecast/tv/playlist/Channel.kt
+++ b/app/src/main/java/dev/castarr/tv/playlist/Channel.kt
@@ -1,4 +1,4 @@
-package com.nodecast.tv.playlist
+package dev.castarr.tv.playlist
 
 import org.json.JSONArray
 import org.json.JSONObject
diff --git a/app/src/main/java/com/nodecast/tv/playlist/M3uParser.kt b/app/src/main/java/dev/castarr/tv/playlist/M3uParser.kt
similarity index 98%
rename from app/src/main/java/com/nodecast/tv/playlist/M3uParser.kt
rename to app/src/main/java/dev/castarr/tv/playlist/M3uParser.kt
index 20321e3..6b67f67 100644
--- a/app/src/main/java/com/nodecast/tv/playlist/M3uParser.kt
+++ b/app/src/main/java/dev/castarr/tv/playlist/M3uParser.kt
@@ -1,4 +1,4 @@
-package com.nodecast.tv.playlist
+package dev.castarr.tv.playlist
 
 object M3uParser {
 
diff --git a/app/src/main/java/com/nodecast/tv/playlist/PlaylistRepository.kt b/app/src/main/java/dev/castarr/tv/playlist/PlaylistRepository.kt
similarity index 98%
rename from app/src/main/java/com/nodecast/tv/playlist/PlaylistRepository.kt
rename to app/src/main/java/dev/castarr/tv/playlist/PlaylistRepository.kt
index 5235e7d..987a9cf 100644
--- a/app/src/main/java/com/nodecast/tv/playlist/PlaylistRepository.kt
+++ b/app/src/main/java/dev/castarr/tv/playlist/PlaylistRepository.kt
@@ -1,4 +1,4 @@
-package com.nodecast.tv.playlist
+package dev.castarr.tv.playlist
 
 import android.content.Context
 import org.json.JSONArray
diff --git a/app/src/main/java/com/nodecast/tv/server/ControlServer.kt b/app/src/main/java/dev/castarr/tv/server/ControlServer.kt
similarity index 98%
rename from app/src/main/java/com/nodecast/tv/server/ControlServer.kt
rename to app/src/main/java/dev/castarr/tv/server/ControlServer.kt
index b56ad94..9c6e24c 100644
--- a/app/src/main/java/com/nodecast/tv/server/ControlServer.kt
+++ b/app/src/main/java/dev/castarr/tv/server/ControlServer.kt
@@ -1,11 +1,11 @@
-package com.nodecast.tv.server
+package dev.castarr.tv.server
 
 import android.content.Context
 import android.os.Handler
 import android.os.Looper
 import android.util.Log
-import com.nodecast.tv.pairing.Pairing
-import com.nodecast.tv.playlist.Channel
+import dev.castarr.tv.pairing.Pairing
+import dev.castarr.tv.playlist.Channel
 import fi.iki.elonen.NanoHTTPD
 import fi.iki.elonen.NanoWSD
 import org.json.JSONObject
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 3312bb9..4b9538f 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-    <string name="app_name">NodeCast</string>
+    <string name="app_name">Castarr</string>
     <string name="pair_title">Pair with your phone</string>
     <string name="pair_subtitle">Point your camera at the code — the remote opens right in your browser.</string>
     <string name="ready_to_pair">Ready to pair</string>
diff --git a/app/src/main/res/values/themes.xml b/app/src/main/res/values/themes.xml
index 9e197a5..8b20737 100644
--- a/app/src/main/res/values/themes.xml
+++ b/app/src/main/res/values/themes.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-    <style name="Theme.NodeCast" parent="android:Theme.Material.NoActionBar">
+    <style name="Theme.Castarr" parent="android:Theme.Material.NoActionBar">
         <item name="android:windowBackground">@color/bg</item>
         <item name="android:colorBackground">@color/bg</item>
         <item name="android:textColorPrimary">@color/fg</item>
diff --git a/settings.gradle.kts b/settings.gradle.kts
index 284b60b..257d083 100644
--- a/settings.gradle.kts
+++ b/settings.gradle.kts
@@ -6,6 +6,10 @@ pluginManagement {
     }
 }
 
+plugins {
+    id("org.gradle.toolchains.foojay-resolver-convention") version "0.8.0"
+}
+
 dependencyResolutionManagement {
     repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
     repositories {
@@ -14,5 +18,5 @@ dependencyResolutionManagement {
     }
 }
 
-rootProject.name = "NodeCast"
+rootProject.name = "Castarr"
 include(":app")