makefile

```makefile
<<<<<<< SEARCH
check:
	cppcheck --enable=all --error-exitcode=1 --suppress=missingIncludeSystem --suppress=usleepCalled --suppress=unreadVariable --suppress=normalCheckLevelMaxBranches src/*.c --library=posix .
=======
check:
	cppcheck --enable=all --error-exitcode=1 --suppress=unreadVariable src/*.c --library=posix .
>>>>>>> REPLACE
```

src/channel.c
```c
<<<<<<< SEARCH
#include "channel.h"
#include <jack/jack.h>
#include <stdatomic.h>
#include <stdio.h>
#include <string.h>
=======
// cppcheck-suppress missingIncludeSystem
#include "channel.h"
#include <jack/jack.h>
#include <stdatomic.h>
#include <stdio.h>
#include <string.h>
>>>>>>> REPLACE
```

src/channel.h
```c
<<<<<<< SEARCH
#include <jack/jack.h>
#include <stdatomic.h>
=======
// cppcheck-suppress missingIncludeSystem
#include <jack/jack.h>
#include <stdatomic.h>
>>>>>>> REPLACE
```

src/looper.c
```c
<<<<<<< SEARCH
#include "looper.h"
#include "channel.h"
#include "midi.h"
#include <jack/jack.h>
#include <jack/midiport.h>
#include <math.h>
#include <stdatomic.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
=======
// cppcheck-suppress missingIncludeSystem
#include "looper.h"
#include "channel.h"
#include "midi.h"
#include <jack/jack.h>
#include <jack/midiport.h>
#include <math.h>
#include <stdatomic.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
>>>>>>> REPLACE
```

src/looper.h
```c
<<<<<<< SEARCH
#include <jack/jack.h>
=======
// cppcheck-suppress missingIncludeSystem
#include <jack/jack.h>
>>>>>>> REPLACE
```

src/main.c
```c
<<<<<<< SEARCH
#include "looper.h"
#include <jack/jack.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <time.h>
=======
// cppcheck-suppress missingIncludeSystem
#include "looper.h"
#include <jack/jack.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <time.h>
>>>>>>> REPLACE
```

src/midi.c
```c
<<<<<<< SEARCH
#include "midi.h"
#include "channel.h"
#include <jack/jack.h>
#include <jack/midiport.h>
#include <stdatomic.h>
=======
// cppcheck-suppress missingIncludeSystem
#include "midi.h"
#include "channel.h"
#include <jack/jack.h>
#include <jack/midiport.h>
#include <stdatomic.h>
>>>>>>> REPLACE
```

src/midi.h
```c
<<<<<<< SEARCH
#include <jack/types.h>
=======
// cppcheck-suppress missingIncludeSystem
#include <jack/types.h>
>>>>>>> REPLACE
```

tests/integration.c
```c
<<<<<<< SEARCH
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <signal.h>
#include <sys/wait.h>
#include <sys/types.h>
#include <string.h>
#include <stdarg.h>
#include <fcntl.h>
#include <jack/jack.h>
#include <jack/midiport.h>
#include <math.h>
#include <time.h>
=======
// cppcheck-suppress missingIncludeSystem
// cppcheck-suppress usleepCalled
// cppcheck-suppress normalCheckLevelMaxBranches
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <signal.h>
#include <sys/wait.h>
#include <sys/types.h>
#include <string.h>
#include <stdarg.h>
#include <fcntl.h>
#include <jack/jack.h>
#include <jack/midiport.h>
#include <math.h>
#include <time.h>
>>>>>>> REPLACE
```

Co-authored-by: aider (deepseek/deepseek-reasoner) <aider@aider.chat>

src/looper.h

@@ -1,6 +1,7 @@
 #ifndef LOOPER_H
 #define LOOPER_H
 
+// cppcheck-suppress missingIncludeSystem
 #include <jack/jack.h>
 
 /* Initialisation – must be called after setting process callback */