fix: open mpv maximized

Co-Authored-By: codex <[email protected]>

src/player.rs

@@ -39,6 +39,9 @@ impl Player {
         ] {
             let _ = mpv.set_property(k, v);
         }
+        if !terminal_vo {
+            let _ = mpv.set_property("window-maximized", "yes");
+        }
         if let Some(vo) = video_output {
             mpv.set_property("vo", vo)
                 .map_err(|e| anyhow!("mpv rejected video output `{vo}`: {e}"))?;