add handle! macro and enable groovebox

Justfile

@@ -1,9 +1,11 @@
 default:
   just -l
+
 status:
   cargo c
   cloc --by-file src/
   git status
+
 push:
   git push -u codeberg main
   git push -u origin main
@@ -16,18 +18,35 @@ fpush:
 ftpush:
   git push --tags -fu codeberg
   git push --tags -fu origin
+
 transport:
   reset
   cargo run --bin tek_transport
+transport-release:
+  reset
+  cargo run --release --bin tek_transport
+
 arranger:
   reset
   cargo run --bin tek_arranger
+arranger-release:
+  reset
+  cargo run --release --bin tek_arranger
+
+groovebox:
+  reset
+  cargo run --bin tek_groovebox
+groovebox-release:
+  reset
+  cargo run --release --bin tek_groovebox
+
 sequencer:
   reset
   cargo run --bin tek_sequencer
 sequencer-release:
   reset
   cargo run --release --bin tek_sequencer
+
 mixer:
   reset
   cargo run --bin tek_mixer