Implement unified SSH command management with dedicated scripts

- Replace complex SSH command patterns with simple script calls
- Create service-manage script for start/stop operations with proper logging
- Create rebuild script equivalent to rebuild_git alias with user feedback
- Update dashboard to use unified command pattern: sudo service-manage, sudo rebuild
- Simplify backup to use service management: service-manage start borgbackup
- Configure sudoers with wildcards for Nix store path compatibility
- Remove cmtec references from script names for better genericity
- Update version to 0.1.90

Cargo.lock

@@ -279,7 +279,7 @@ checksum = "a1d728cc89cf3aee9ff92b05e62b19ee65a02b5702cff7d5a377e32c6ae29d8d"
 
 [[package]]
 name = "cm-dashboard"
-version = "0.1.89"
+version = "0.1.90"
 dependencies = [
  "anyhow",
  "chrono",
@@ -301,7 +301,7 @@ dependencies = [
 
 [[package]]
 name = "cm-dashboard-agent"
-version = "0.1.89"
+version = "0.1.90"
 dependencies = [
  "anyhow",
  "async-trait",
@@ -324,7 +324,7 @@ dependencies = [
 
 [[package]]
 name = "cm-dashboard-shared"
-version = "0.1.89"
+version = "0.1.90"
 dependencies = [
  "chrono",
  "serde",