- Integrated systemd notification support using github.com/coreos/go-systemd/v22/daemon.
- Updated manager/runner.go to signal readiness to systemd.
- Modified .golangci.yml to include github.com/coreos/go-systemd in linters-settings.
- Updated dependencies in go.mod and go.sum for github.com/coreos/go-systemd/v22 v22.5.0.

- Implemented a channel (`readyCh`) to signal application readiness to systemd
- Ensured robust handling of readiness signaling with error logging

- Introduced context management with cancellation in Run method.
- Refactored signal handling to properly clean up and stop goroutines.
- Added context cancellation to stop the readiness signaling to systemd.

- Removed redundant cancellation of context in signal handling.
- Ensured consistency in context management throughout Run method.