Fix real-time log streaming by simplifying service start command

- Remove complex background process monitoring that was buffering output
- Use direct journalctl -fu command for immediate real-time log streaming
- Eliminate monitoring loop that was killing log stream when service became active
- User now controls log following duration with Ctrl+C
- Fixes buffering issues that prevented seeing ark server startup logs in real-time

Cargo.lock

@@ -270,7 +270,7 @@ checksum = "a1d728cc89cf3aee9ff92b05e62b19ee65a02b5702cff7d5a377e32c6ae29d8d"
 
 [[package]]
 name = "cm-dashboard"
-version = "0.1.79"
+version = "0.1.80"
 dependencies = [
  "anyhow",
  "chrono",
@@ -292,7 +292,7 @@ dependencies = [
 
 [[package]]
 name = "cm-dashboard-agent"
-version = "0.1.79"
+version = "0.1.80"
 dependencies = [
  "anyhow",
  "async-trait",
@@ -315,7 +315,7 @@ dependencies = [
 
 [[package]]
 name = "cm-dashboard-shared"
-version = "0.1.79"
+version = "0.1.80"
 dependencies = [
  "chrono",
  "serde",