feat: add uwsm/hyprland launch wrapper and fix CLI args

- Add launch_wrapper config option with auto-detection for uwsm and
  hyprland sessions, ensuring apps launch with proper session management
- Fix CLI argument parsing by preventing GTK from intercepting
  clap-parsed args (--mode, --providers)
- Improve desktop file Exec field parsing to properly handle quoted
  arguments and FreeDesktop field codes (%u, %F, etc.)
- Add unit tests for Exec field parsing

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/config/mod.rs

@@ -15,6 +15,11 @@ pub struct GeneralConfig {
     pub show_icons: bool,
     pub max_results: usize,
     pub terminal_command: String,
+    /// Launch wrapper command for app execution.
+    /// Examples: "uwsm app --", "hyprctl dispatch exec --", "systemd-run --user --"
+    /// If None or empty, launches directly via sh -c
+    #[serde(default)]
+    pub launch_wrapper: Option<String>,
 }
 
 /// User-customizable theme colors
@@ -56,6 +61,32 @@ pub struct ProvidersConfig {
     pub uuctl: bool,
 }
 
+/// Detect the best launch wrapper for the current session
+/// Checks for uwsm (Universal Wayland Session Manager) and hyprland
+fn detect_launch_wrapper() -> Option<String> {
+    // Check if running under uwsm (has UWSM_FINALIZE_VARNAMES or similar uwsm env vars)
+    if std::env::var("UWSM_FINALIZE_VARNAMES").is_ok()
+        || std::env::var("__UWSM_SELECT_TAG").is_ok()
+    {
+        if command_exists("uwsm") {
+            debug!("Detected uwsm session, using 'uwsm app --' wrapper");
+            return Some("uwsm app --".to_string());
+        }
+    }
+
+    // Check if running under Hyprland
+    if std::env::var("HYPRLAND_INSTANCE_SIGNATURE").is_ok() {
+        if command_exists("hyprctl") {
+            debug!("Detected Hyprland session, using 'hyprctl dispatch exec --' wrapper");
+            return Some("hyprctl dispatch exec --".to_string());
+        }
+    }
+
+    // No wrapper needed for other environments
+    debug!("No launch wrapper detected, using direct execution");
+    None
+}
+
 /// Detect the best available terminal emulator
 /// Fallback chain:
 /// 1. $TERMINAL env var (user's explicit preference)
@@ -127,6 +158,7 @@ impl Default for Config {
                 show_icons: true,
                 max_results: 10,
                 terminal_command: terminal,
+                launch_wrapper: detect_launch_wrapper(),
             },
             appearance: AppearanceConfig {
                 width: 600,