diff --git a/gnome-shell-extension/ai-control-popup@local/extension.js b/gnome-shell-extension/ai-control-popup@local/extension.js
index 43413c0..295e18a 100644
--- a/gnome-shell-extension/ai-control-popup@local/extension.js
+++ b/gnome-shell-extension/ai-control-popup@local/extension.js
@@ -18,7 +18,6 @@ const DBUS_NAME = 'com.aicontrol.Popup';
 const DBUS_PATH = '/com/aicontrol/Popup';
 const DBUS_IFACE = 'com.aicontrol.Popup1';
 const WIN_TITLE = 'ai-control-popup';
-const ICON_PATH = '/home/marcuh/projects/ai-control/src-tauri/icons/trayLinux.png';
 
 export default class AiControlPopupExtension extends Extension {
   enable() {
@@ -59,7 +58,8 @@ export default class AiControlPopupExtension extends Extension {
     // dontCreateMenu=true: wir wollen kein Shell-Menü, nur den Klick relayen.
     this._button = new PanelMenu.Button(0.0, 'ai-control', true);
     const icon = new St.Icon({
-      gicon: Gio.icon_new_for_string(ICON_PATH),
+      // Icon liegt neben der Extension (vom Paket mitgeliefert).
+      gicon: Gio.icon_new_for_string(`${this.path}/trayLinux.png`),
       icon_size: 36,
     });
     this._button.add_child(icon);
diff --git a/src-tauri/Cargo.lock b/src-tauri/Cargo.lock
index 29fe745..dbc23a7 100644
--- a/src-tauri/Cargo.lock
+++ b/src-tauri/Cargo.lock
@@ -40,6 +40,7 @@ dependencies = [
  "objc2-app-kit",
  "objc2-foundation",
  "portable-pty",
+ "rfd 0.15.4",
  "serde",
  "serde_json",
  "sha2",
@@ -3118,6 +3119,30 @@ dependencies = [
  "web-sys",
 ]
 
+[[package]]
+name = "rfd"
+version = "0.15.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ef2bee61e6cffa4635c72d7d81a84294e28f0930db0ddcb0f66d10244674ebed"
+dependencies = [
+ "block2",
+ "dispatch2",
+ "glib-sys",
+ "gobject-sys",
+ "gtk-sys",
+ "js-sys",
+ "log",
+ "objc2",
+ "objc2-app-kit",
+ "objc2-core-foundation",
+ "objc2-foundation",
+ "raw-window-handle",
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+ "web-sys",
+ "windows-sys 0.59.0",
+]
+
 [[package]]
 name = "rfd"
 version = "0.16.0"
@@ -3976,7 +4001,7 @@ checksum = "65981abb771e74e571a38196c3baa11c459379164791eba0e67abc1a5fac9884"
 dependencies = [
  "log",
  "raw-window-handle",
- "rfd",
+ "rfd 0.16.0",
  "serde",
  "serde_json",
  "tauri",
diff --git a/src-tauri/Cargo.toml b/src-tauri/Cargo.toml
index 2418c95..4c42f64 100644
--- a/src-tauri/Cargo.toml
+++ b/src-tauri/Cargo.toml
@@ -14,6 +14,10 @@ rust-version = "1.77.2"
 name = "app_lib"
 crate-type = ["staticlib", "cdylib", "rlib"]
 
+# Zeilennummern im Release-Backtrace (sonst zeigt der Panic-Tracer nur Adressen).
+[profile.release]
+debug = 1
+
 [build-dependencies]
 tauri-build = { version = "2.6.3", features = [] }
 
@@ -34,6 +38,7 @@ keyring = { version = "3", features = ["apple-native", "sync-secret-service", "w
 [target.'cfg(target_os = "linux")'.dependencies]
 zbus = "5"
 glib = "0.18"
+rfd = { version = "0.15", default-features = false, features = ["gtk3"] }
 
 [target.'cfg(target_os = "macos")'.dependencies]
 objc2 = "0.6"
diff --git a/src-tauri/src/lib.rs b/src-tauri/src/lib.rs
index 93404ad..3ca0b51 100644
--- a/src-tauri/src/lib.rs
+++ b/src-tauri/src/lib.rs
@@ -111,7 +111,7 @@ pub(crate) fn set_project_archive_dir(project: &str, dir: &str) -> Result<(), St
 fn add_archive_permission(paths: &Paths, project: &str, dir: &str) -> Result<(), String> {
   let sp = settings_path(&project_dir(paths, project)?);
   let mut v: serde_json::Value = if sp.is_file() {
-    serde_json::from_str(&fs::read_to_string(&sp).map_err(|e| e.to_string())?)
+    serde_json::from_str(&fs::read_to_string(&sp).map_err(|e| format!("{}: {e}", sp.display()))?)
       .map_err(|e| format!("{}: {e}", sp.display()))?
   } else {
     serde_json::json!({})
@@ -140,7 +140,7 @@ fn add_archive_permission(paths: &Paths, project: &str, dir: &str) -> Result<(),
     allow.push(serde_json::json!(edit));
   }
   let parent = sp.parent().ok_or("settings.json ohne Elternordner")?;
-  fs::create_dir_all(parent).map_err(|e| e.to_string())?;
+  fs::create_dir_all(parent).map_err(|e| format!("{}: {e}", parent.display()))?;
   let raw = serde_json::to_string_pretty(&v).map_err(|e| e.to_string())?;
   fs::write(&sp, raw + "\n").map_err(|e| format!("{}: {e}", sp.display()))
 }
@@ -275,7 +275,8 @@ fn save_registry(
   let contracted: std::collections::BTreeMap<&String, String> =
     reg.iter().map(|(name, dir)| (name, contract_home(paths, dir))).collect();
   let raw = serde_json::to_string_pretty(&contracted).map_err(|e| e.to_string())?;
-  fs::create_dir_all(paths.config_dir()).map_err(|e| e.to_string())?;
+  fs::create_dir_all(paths.config_dir())
+    .map_err(|e| format!("{}: {e}", paths.config_dir().display()))?;
   let file = paths.projects_file();
   fs::write(&file, raw + "\n").map_err(|e| format!("{}: {e}", file.display()))
 }
@@ -423,7 +424,8 @@ fn set_sync_on_session_end_in(paths: &Paths, enabled: bool) -> Result<(), String
     .and_then(|s| serde_json::from_str(&s).ok())
     .unwrap_or_else(|| serde_json::json!({}));
   v["syncOnSessionEnd"] = serde_json::json!(enabled);
-  fs::create_dir_all(paths.config_dir()).map_err(|e| e.to_string())?;
+  fs::create_dir_all(paths.config_dir())
+    .map_err(|e| format!("{}: {e}", paths.config_dir().display()))?;
   let raw = serde_json::to_string_pretty(&v).map_err(|e| e.to_string())?;
   fs::write(&path, raw + "\n").map_err(|e| format!("{}: {e}", path.display()))
 }
@@ -702,9 +704,12 @@ fn create_project_full_in(
     }
   }
 
-  fs::create_dir_all(dir.join(".claude")).map_err(|e| e.to_string())?;
-  fs::create_dir_all(dir.join("memory")).map_err(|e| e.to_string())?;
-  fs::write(dir.join(".gitignore"), ".ai-control-running\n").map_err(|e| e.to_string())?;
+  fs::create_dir_all(dir.join(".claude"))
+    .map_err(|e| format!("{}: {e}", dir.join(".claude").display()))?;
+  fs::create_dir_all(dir.join("memory"))
+    .map_err(|e| format!("{}: {e}", dir.join("memory").display()))?;
+  fs::write(dir.join(".gitignore"), ".ai-control-running\n")
+    .map_err(|e| format!("{}: {e}", dir.join(".gitignore").display()))?;
 
   let contracted = contract_home(paths, &dir);
   let mut allow = vec![format!("Edit({contracted}/**)")];
@@ -721,7 +726,8 @@ fn create_project_full_in(
     },
   });
   let raw = serde_json::to_string_pretty(&settings).map_err(|e| e.to_string())?;
-  fs::write(dir.join(".claude").join("settings.json"), raw + "\n").map_err(|e| e.to_string())?;
+  fs::write(dir.join(".claude").join("settings.json"), raw + "\n")
+    .map_err(|e| format!("{}: {e}", dir.join(".claude").join("settings.json").display()))?;
 
   reg.insert(name.to_string(), dir.clone());
   save_registry(paths, &reg)?;
@@ -814,7 +820,8 @@ fn create_project_in(paths: &Paths, name: &str) -> Result<(), String> {
   if dir.exists() {
     return Err(format!("Projekt existiert bereits: {name}"));
   }
-  fs::create_dir_all(dir.join(".claude")).map_err(|e| e.to_string())?;
+  fs::create_dir_all(dir.join(".claude"))
+    .map_err(|e| format!("{}: {e}", dir.join(".claude").display()))?;
   register_project(paths, name, &dir)
 }
 
@@ -924,7 +931,7 @@ fn delete_project_in(paths: &Paths, name: &str, delete_work_dirs: bool) -> Resul
       fs::remove_dir_all(&wd_path).map_err(|e| format!("{}: {e}", wd_path.display()))?;
     }
   }
-  fs::remove_dir_all(&dir).map_err(|e| e.to_string())?;
+  fs::remove_dir_all(&dir).map_err(|e| format!("{}: {e}", dir.display()))?;
   unregister_project(paths, name)?;
   #[cfg(target_os = "linux")]
   remove_terminal_desktop(paths, name);
@@ -947,7 +954,8 @@ fn write_project_config_in(
   cfg: &ProjectConfig,
 ) -> Result<(), String> {
   let raw = serde_json::to_string_pretty(cfg).map_err(|e| e.to_string())?;
-  fs::write(project_config_path(paths, project)?, raw + "\n").map_err(|e| e.to_string())
+  let path = project_config_path(paths, project)?;
+  fs::write(&path, raw + "\n").map_err(|e| format!("{}: {e}", path.display()))
 }
 
 fn assign_pool_in(paths: &Paths, project: &str, pool: &str) -> Result<(), String> {
@@ -1116,7 +1124,7 @@ fn projects_using_pool(paths: &Paths, pool: &str) -> Result<Vec<String>, String>
     if !cfg_path.is_file() {
       continue;
     }
-    let raw = fs::read_to_string(&cfg_path).map_err(|e| e.to_string())?;
+    let raw = fs::read_to_string(&cfg_path).map_err(|e| format!("{}: {e}", cfg_path.display()))?;
     let cfg: ProjectConfig = serde_json::from_str(&raw).map_err(|e| e.to_string())?;
     if cfg.pool.as_deref() == Some(pool) {
       users.push(name);
@@ -1260,14 +1268,18 @@ struct PoolInfo {
 
 fn list_pools_in(paths: &Paths, store: &dyn ApikeyStore) -> Result<Vec<PoolInfo>, String> {
   let mut pools = Vec::new();
-  let entries = fs::read_dir(paths.pools_dir()).map_err(|e| e.to_string())?;
+  if !paths.pools_dir().is_dir() {
+    return Ok(pools);
+  }
+  let entries =
+    fs::read_dir(paths.pools_dir()).map_err(|e| format!("{}: {e}", paths.pools_dir().display()))?;
   for entry in entries {
-    let entry = entry.map_err(|e| e.to_string())?;
+    let entry = entry.map_err(|e| format!("{}: {e}", paths.pools_dir().display()))?;
     let cfg_path = entry.path().join(POOL_FILE);
     if !cfg_path.is_file() {
       continue;
     }
-    let raw = fs::read_to_string(&cfg_path).map_err(|e| e.to_string())?;
+    let raw = fs::read_to_string(&cfg_path).map_err(|e| format!("{}: {e}", cfg_path.display()))?;
     let pool: Pool =
       serde_json::from_str(&raw).map_err(|e| format!("{}: {e}", cfg_path.display()))?;
     let id = entry.file_name().to_string_lossy().into_owned();
@@ -1305,13 +1317,15 @@ fn pool_names(paths: &Paths) -> Result<Vec<(String, String)>, String> {
   if !paths.pools_dir().is_dir() {
     return Ok(out);
   }
-  for entry in fs::read_dir(paths.pools_dir()).map_err(|e| e.to_string())? {
-    let entry = entry.map_err(|e| e.to_string())?;
+  for entry in
+    fs::read_dir(paths.pools_dir()).map_err(|e| format!("{}: {e}", paths.pools_dir().display()))?
+  {
+    let entry = entry.map_err(|e| format!("{}: {e}", paths.pools_dir().display()))?;
     let cfg_path = entry.path().join(POOL_FILE);
     if !cfg_path.is_file() {
       continue;
     }
-    let raw = fs::read_to_string(&cfg_path).map_err(|e| e.to_string())?;
+    let raw = fs::read_to_string(&cfg_path).map_err(|e| format!("{}: {e}", cfg_path.display()))?;
     let pool: Pool =
       serde_json::from_str(&raw).map_err(|e| format!("{}: {e}", cfg_path.display()))?;
     out.push((entry.file_name().to_string_lossy().into_owned(), pool.name));
@@ -1330,21 +1344,23 @@ fn check_new_pool(paths: &Paths, name: &str) -> Result<PathBuf, String> {
 }
 
 fn write_pool_json(dir: &PathBuf, name: &str, credential_type: &str) -> Result<(), String> {
-  fs::create_dir_all(dir).map_err(|e| e.to_string())?;
+  fs::create_dir_all(dir).map_err(|e| format!("{}: {e}", dir.display()))?;
   let pool = Pool {
     name: name.to_string(),
     credential_type: credential_type.to_string(),
   };
   let raw = serde_json::to_string_pretty(&pool).map_err(|e| e.to_string())?;
-  fs::write(dir.join(POOL_FILE), raw + "\n").map_err(|e| e.to_string())
+  fs::write(dir.join(POOL_FILE), raw + "\n")
+    .map_err(|e| format!("{}: {e}", dir.join(POOL_FILE).display()))
 }
 
 fn write_secret_file(path: &PathBuf, content: &str) -> Result<(), String> {
   if let Some(parent) = path.parent() {
-    fs::create_dir_all(parent).map_err(|e| e.to_string())?;
+    fs::create_dir_all(parent).map_err(|e| format!("{}: {e}", parent.display()))?;
   }
-  fs::write(path, content).map_err(|e| e.to_string())?;
-  fs::set_permissions(path, fs::Permissions::from_mode(0o600)).map_err(|e| e.to_string())
+  fs::write(path, content).map_err(|e| format!("{}: {e}", path.display()))?;
+  fs::set_permissions(path, fs::Permissions::from_mode(0o600))
+    .map_err(|e| format!("{}: {e}", path.display()))
 }
 
 /// Grundausstattung eines Pool-Ordners (= CLAUDE_CONFIG_DIR): settings.json
@@ -1367,12 +1383,13 @@ fn init_pool_config(
       base.insert(k.clone(), v.clone());
     }
   }
-  fs::create_dir_all(dir).map_err(|e| e.to_string())?;
+  fs::create_dir_all(dir).map_err(|e| format!("{}: {e}", dir.display()))?;
   let raw = serde_json::to_string_pretty(&settings).map_err(|e| e.to_string())?;
-  fs::write(dir.join("settings.json"), raw + "\n").map_err(|e| e.to_string())?;
+  fs::write(dir.join("settings.json"), raw + "\n")
+    .map_err(|e| format!("{}: {e}", dir.join("settings.json").display()))?;
   let claude_md = dir.join("CLAUDE.md");
   if !claude_md.is_file() {
-    fs::write(&claude_md, "").map_err(|e| e.to_string())?;
+    fs::write(&claude_md, "").map_err(|e| format!("{}: {e}", claude_md.display()))?;
   }
   install_panel_skill(dir);
   register_mcp_server(dir);
@@ -1533,20 +1550,21 @@ fn link_pool_runtime_in(paths: &Paths, pool: &str) -> Result<(), String> {
   for (name, is_dir) in SYNCED_RUNTIME {
     let target = data.join(name);
     if is_dir {
-      fs::create_dir_all(&target).map_err(|e| e.to_string())?;
+      fs::create_dir_all(&target).map_err(|e| format!("{}: {e}", target.display()))?;
     } else {
-      fs::create_dir_all(&data).map_err(|e| e.to_string())?;
+      fs::create_dir_all(&data).map_err(|e| format!("{}: {e}", data.display()))?;
       if !target.exists() {
-        fs::write(&target, "").map_err(|e| e.to_string())?;
+        fs::write(&target, "").map_err(|e| format!("{}: {e}", target.display()))?;
       }
     }
     let link = src.join(name);
     if link.is_dir() && !link.is_symlink() {
-      fs::remove_dir_all(&link).map_err(|e| e.to_string())?;
+      fs::remove_dir_all(&link).map_err(|e| format!("{}: {e}", link.display()))?;
     } else if link.is_symlink() || link.exists() {
-      fs::remove_file(&link).map_err(|e| e.to_string())?;
+      fs::remove_file(&link).map_err(|e| format!("{}: {e}", link.display()))?;
     }
-    std::os::unix::fs::symlink(&target, &link).map_err(|e| e.to_string())?;
+    std::os::unix::fs::symlink(&target, &link)
+      .map_err(|e| format!("{}: {e}", link.display()))?;
   }
   Ok(())
 }
@@ -1626,7 +1644,7 @@ fn delete_pool_in(paths: &Paths, store: &dyn ApikeyStore, name: &str) -> Result<
   for project in projects_using_pool(paths, name)? {
     unassign_pool_in(paths, &project)?;
   }
-  fs::remove_dir_all(&dir).map_err(|e| e.to_string())
+  fs::remove_dir_all(&dir).map_err(|e| format!("{}: {e}", dir.display()))
 }
 
 /// Schreibt den API-Key eines apikey-Pools neu: in den Keychain/Keyring, die
@@ -1652,7 +1670,7 @@ fn set_apikey_in(
   let key_path = dir.join(APIKEY_FILE);
   if store.set(pool, key).is_ok() {
     if key_path.is_file() {
-      fs::remove_file(&key_path).map_err(|e| e.to_string())?;
+      fs::remove_file(&key_path).map_err(|e| format!("{}: {e}", key_path.display()))?;
     }
   } else {
     if !allow_file {
@@ -1667,7 +1685,7 @@ fn set_apikey_in(
     .map_err(|e| format!("{}: {e}", settings_path.display()))?;
   settings["apiKeyHelper"] = serde_json::json!(apikey_helper_command(&dir, pool));
   let raw = serde_json::to_string_pretty(&settings).map_err(|e| e.to_string())?;
-  fs::write(&settings_path, raw + "\n").map_err(|e| e.to_string())
+  fs::write(&settings_path, raw + "\n").map_err(|e| format!("{}: {e}", settings_path.display()))
 }
 
 fn ensure_oauth_pool(paths: &Paths, pool: &str) -> Result<(), String> {
@@ -1814,8 +1832,13 @@ fn usage_stats_in(paths: &Paths, days: u32) -> Result<Vec<UsageRow>, String> {
   let mut seen = HashSet::new();
   let mut rows: HashMap<(String, String), UsageTotals> = HashMap::new();
 
-  for pool_entry in fs::read_dir(paths.pools_dir()).map_err(|e| e.to_string())? {
-    let pool_entry = pool_entry.map_err(|e| e.to_string())?;
+  if !paths.pools_dir().is_dir() {
+    return Ok(Vec::new());
+  }
+  for pool_entry in
+    fs::read_dir(paths.pools_dir()).map_err(|e| format!("{}: {e}", paths.pools_dir().display()))?
+  {
+    let pool_entry = pool_entry.map_err(|e| format!("{}: {e}", paths.pools_dir().display()))?;
     let id = pool_entry.file_name().to_string_lossy().into_owned();
     // Anzeigename aus pool.json; Ordner ohne pool.json unter der ID ausweisen.
     let pool = if pool_entry.path().join(POOL_FILE).is_file() {
@@ -1827,8 +1850,10 @@ fn usage_stats_in(paths: &Paths, days: u32) -> Result<Vec<UsageRow>, String> {
     if !projects_root.is_dir() {
       continue;
     }
-    for proj_entry in fs::read_dir(&projects_root).map_err(|e| e.to_string())? {
-      let proj_entry = proj_entry.map_err(|e| e.to_string())?;
+    for proj_entry in
+      fs::read_dir(&projects_root).map_err(|e| format!("{}: {e}", projects_root.display()))?
+    {
+      let proj_entry = proj_entry.map_err(|e| format!("{}: {e}", projects_root.display()))?;
       if !proj_entry.path().is_dir() {
         continue;
       }
@@ -1837,8 +1862,10 @@ fn usage_stats_in(paths: &Paths, days: u32) -> Result<Vec<UsageRow>, String> {
       // kodierten Namen ausweisen statt verschlucken.
       let project = names.get(&encoded).cloned().unwrap_or(encoded);
       let totals = rows.entry((pool.clone(), project)).or_default();
-      for file in fs::read_dir(proj_entry.path()).map_err(|e| e.to_string())? {
-        let file = file.map_err(|e| e.to_string())?;
+      for file in fs::read_dir(proj_entry.path())
+        .map_err(|e| format!("{}: {e}", proj_entry.path().display()))?
+      {
+        let file = file.map_err(|e| format!("{}: {e}", proj_entry.path().display()))?;
         let path = file.path();
         if path.extension().and_then(|e| e.to_str()) != Some("jsonl") {
           continue;
@@ -2152,7 +2179,8 @@ fn set_terminal_font_size(size: u32) -> Result<(), String> {
     .and_then(|s| serde_json::from_str(&s).ok())
     .unwrap_or_else(|| serde_json::json!({}));
   v["terminalFontSize"] = serde_json::json!(size);
-  fs::create_dir_all(paths.config_dir()).map_err(|e| e.to_string())?;
+  fs::create_dir_all(paths.config_dir())
+    .map_err(|e| format!("{}: {e}", paths.config_dir().display()))?;
   let raw = serde_json::to_string_pretty(&v).map_err(|e| e.to_string())?;
   fs::write(&path, raw + "\n").map_err(|e| format!("{}: {e}", path.display()))
 }
@@ -2169,7 +2197,29 @@ fn link_pool_runtime(pool: String) -> Result<(), String> {
 }
 
 #[cfg_attr(mobile, tauri::mobile_entry_point)]
+/// Panic-Tracer: erzwingt bei jedem Panic einen vollständigen Backtrace
+/// (unabhängig von RUST_BACKTRACE), gibt ihn klar abgegrenzt auf stderr aus und
+/// schreibt ihn zusätzlich in eine kopierbare Datei (Pfad pro Prozess, damit
+/// Haupt- und Terminal-Prozesse sich nicht überschreiben).
+fn install_panic_tracer() {
+  std::panic::set_hook(Box::new(|info| {
+    let bt = std::backtrace::Backtrace::force_capture();
+    let dump = format!(
+      "\n========== ai-control PANIC (pid {}) ==========\n{info}\n\n{bt}\n========== END ==========\n",
+      std::process::id()
+    );
+    eprintln!("{dump}");
+    let path =
+      std::env::temp_dir().join(format!("ai-control-panic-{}.log", std::process::id()));
+    if std::fs::write(&path, &dump).is_ok() {
+      eprintln!("Backtrace kopierbar in: {}", path.display());
+    }
+  }));
+}
+
 pub fn run() {
+  install_panic_tracer();
+
   let mut args = std::env::args().skip(1);
   let first = args.next();
 
@@ -2180,6 +2230,24 @@ pub fn run() {
     return;
   }
 
+  // AppImage ist installationsfrei und kann die GNOME-Popup-Extension nicht
+  // ausrollen/aktivieren. Unter GNOME daher auf das deb-/rpm-Paket verweisen und
+  // beenden. KDE/XFCE zeigen das Tray ohne Extension — dort läuft die AppImage.
+  #[cfg(target_os = "linux")]
+  if std::env::var_os("APPIMAGE").is_some() && is_gnome() {
+    rfd::MessageDialog::new()
+      .set_level(rfd::MessageLevel::Warning)
+      .set_title("ai-control")
+      .set_description(
+        "Die AppImage-Fassung wird unter GNOME nicht unterstützt: Das Tray-Icon \
+         braucht eine GNOME-Shell-Extension, die nur das deb-/rpm-Paket \
+         installiert. Bitte das deb- bzw. rpm-Paket verwenden.",
+      )
+      .set_buttons(rfd::MessageButtons::Ok)
+      .show();
+    std::process::exit(1);
+  }
+
   // generate_context! darf pro Crate nur einmal expandieren (_EMBED_INFO_PLIST).
   let context = tauri::generate_context!();
   match first.as_deref() {
@@ -2331,6 +2399,15 @@ impl PopupService {
   }
 }
 
+/// GNOME-Session? (XDG_CURRENT_DESKTOP enthält „GNOME"). Steuert AppImage-Sperre
+/// und Extension-Aktivierung.
+#[cfg(target_os = "linux")]
+fn is_gnome() -> bool {
+  std::env::var("XDG_CURRENT_DESKTOP")
+    .map(|d| d.to_uppercase().contains("GNOME"))
+    .unwrap_or(false)
+}
+
 #[cfg(target_os = "linux")]
 fn serve_popup_dbus(app: tauri::AppHandle) -> zbus::Result<()> {
   let _conn = zbus::blocking::connection::Builder::session()?
@@ -2455,17 +2532,51 @@ fn main_builder() -> tauri::Builder<tauri::Wry> {
           .build(app)?;
       }
 
-      // Linux/GNOME: D-Bus-Relay. Die Shell-Extension (ai-control-popup@local)
-      // ruft Show() und schiebt das Fenster unter ihren Panel-Button — GNOME
-      // liefert der App selbst keinen Tray-Klick.
+      // Linux: GNOME kann kein SNI-Tray, daher dort der Extension/D-Bus-Relay;
+      // alle anderen Desktops (KDE, Cinnamon, LXQt, …) bekommen ein natives
+      // Tray-Icon. libappindicator liefert keine Klick-Events, nur ein Menü —
+      // deshalb Menü statt Klick-Popup wie auf macOS/Windows.
       #[cfg(target_os = "linux")]
       {
-        let app_dbus = app.handle().clone();
-        std::thread::spawn(move || {
-          if let Err(e) = serve_popup_dbus(app_dbus) {
-            eprintln!("D-Bus-Popup-Dienst: {e}");
-          }
-        });
+        use tauri::Manager;
+        if is_gnome() {
+          // Die Extension liegt systemweit (aus dem Paket), aktiviert wird sie
+          // pro Benutzer in dconf — das erledigt die im Benutzerkontext
+          // laufende App. Show() der Extension schiebt das Popup unter den
+          // Panel-Button.
+          let _ = Command::new("gnome-extensions")
+            .args(["enable", "ai-control-popup@local"])
+            .status();
+          let app_dbus = app.handle().clone();
+          std::thread::spawn(move || {
+            if let Err(e) = serve_popup_dbus(app_dbus) {
+              eprintln!("D-Bus-Popup-Dienst: {e}");
+            }
+          });
+        } else {
+          use tauri::menu::MenuItemBuilder;
+          use tauri::menu::MenuBuilder;
+          use tauri::tray::TrayIconBuilder;
+          let open = MenuItemBuilder::with_id("open", "ai-control öffnen").build(app)?;
+          let quit = MenuItemBuilder::with_id("quit", "Beenden").build(app)?;
+          let menu = MenuBuilder::new(app).items(&[&open, &quit]).build()?;
+          let icon = tauri::image::Image::from_bytes(include_bytes!("../icons/trayLinux.png"))?;
+          TrayIconBuilder::with_id("main")
+            .icon(icon)
+            .menu(&menu)
+            .on_menu_event(|app, event| match event.id().as_ref() {
+              "open" => {
+                if let Some(w) = app.get_webview_window("popup") {
+                  let _ = w.center();
+                  let _ = w.show();
+                  let _ = w.set_focus();
+                }
+              }
+              "quit" => app.exit(0),
+              _ => {}
+            })
+            .build(app)?;
+        }
       }
 
       Ok(())
diff --git a/src-tauri/tauri.conf.json b/src-tauri/tauri.conf.json
index c69a043..63adb06 100644
--- a/src-tauri/tauri.conf.json
+++ b/src-tauri/tauri.conf.json
@@ -18,7 +18,7 @@
   },
   "bundle": {
     "active": true,
-    "targets": ["deb", "rpm", "app", "dmg", "nsis", "msi"],
+    "targets": ["deb", "rpm", "appimage", "app", "dmg", "nsis", "msi"],
     "icon": [
       "icons/32x32.png",
       "icons/128x128.png",
@@ -26,6 +26,24 @@
       "icons/icon.icns",
       "icons/icon.ico"
     ],
+    "linux": {
+      "deb": {
+        "depends": ["libayatana-appindicator3-1"],
+        "files": {
+          "/usr/share/gnome-shell/extensions/ai-control-popup@local/extension.js": "../gnome-shell-extension/ai-control-popup@local/extension.js",
+          "/usr/share/gnome-shell/extensions/ai-control-popup@local/metadata.json": "../gnome-shell-extension/ai-control-popup@local/metadata.json",
+          "/usr/share/gnome-shell/extensions/ai-control-popup@local/trayLinux.png": "icons/trayLinux.png"
+        }
+      },
+      "rpm": {
+        "depends": ["libappindicator-gtk3"],
+        "files": {
+          "/usr/share/gnome-shell/extensions/ai-control-popup@local/extension.js": "../gnome-shell-extension/ai-control-popup@local/extension.js",
+          "/usr/share/gnome-shell/extensions/ai-control-popup@local/metadata.json": "../gnome-shell-extension/ai-control-popup@local/metadata.json",
+          "/usr/share/gnome-shell/extensions/ai-control-popup@local/trayLinux.png": "icons/trayLinux.png"
+        }
+      }
+    },
     "android": {
       "debugApplicationIdSuffix": ".debug"
     }