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)

1 files changed, 26 insertions, 0 deletions

diff --git a/completions/rsp.zsh b/completions/rsp.zsh
new file mode 100644
index 0000000..c07feb1
--- /dev/null
+++ b/completions/rsp.zsh
@@ -0,0 +1,26 @@
+#compdef rsp
+
+_rsp() {
+  _arguments -C \
+    '1:command:->cmd' \
+    '*::args:->args'
+
+  case $state in
+    cmd)
+      _values 'command' \
+        'start' 'stop' 'restart' 'play' 'pause' 'resume' 'next' 'previous' \
+        'volume' 'shuffle' 'queue' 'status' 'scan' 'settings'
+      ;;
+    args)
+      # if first word is "play", complete files/dirs
+      if [[ $words[1] == play || $words[2] == play ]]; then
+        _files
+      else
+        # default: complete nothing (or you can list other subcommand args)
+        return 0
+      fi
+      ;;
+  esac
+}
+
+compdef _rsp rsp