Add install script, shell completions, and systemd service

- Add install.sh script that builds release, stops daemon, and installs binary
- Add shell completions for bash, zsh, and fish
- Add systemd user service unit file
- Add public binary declaration in Cargo.toml
- Add install command to CLI
- Make current_track field public for MPRIS integration (placeholder)

2 files changed, 2 insertions, 2 deletions

diff --git a/src/audio.rs b/src/audio.rs
index d716a23..58ad2bf 100644
--- a/src/audio.rs
+++ b/src/audio.rs
@@ -16,7 +16,7 @@ pub enum AudioCommand {
 pub struct AudioEngine {
     command_tx: Sender<AudioCommand>,
     is_playing: Arc<AtomicBool>,
-    current_track: Arc<Mutex<Option<std::path::PathBuf>>>,
+    pub current_track: Arc<Mutex<Option<std::path::PathBuf>>>,
     track_ended: Arc<AtomicBool>,
     volume: Arc<Mutex<f32>>,
 }
diff --git a/src/cli.rs b/src/cli.rs
index 1d83262..a18b8f1 100644
--- a/src/cli.rs
+++ b/src/cli.rs
@@ -4,7 +4,7 @@ use clap::{Parser, Subcommand};
 use std::path::PathBuf;
 
 #[derive(Parser)]
-#[command(name = "rsp")]
+#[command(name = "rsp", infer_long_args = true)]
 #[command(about = "Rust music player daemon", long_about = None)]
 pub struct Cli {
     #[command(subcommand)]