Implement clean NixOS rebuild tmux popup

- Replace complex ASCII logo with simple text header
- Remove extra blank lines for compact display
- Left-align text for clean appearance
- Add spacing after target line for readability
- Simplify heredoc format for better maintainability

Cargo.lock

@@ -270,7 +270,7 @@ checksum = "a1d728cc89cf3aee9ff92b05e62b19ee65a02b5702cff7d5a377e32c6ae29d8d"
 
 [[package]]
 name = "cm-dashboard"
-version = "0.1.38"
+version = "0.1.39"
 dependencies = [
  "anyhow",
  "chrono",
@@ -291,7 +291,7 @@ dependencies = [
 
 [[package]]
 name = "cm-dashboard-agent"
-version = "0.1.38"
+version = "0.1.39"
 dependencies = [
  "anyhow",
  "async-trait",
@@ -314,7 +314,7 @@ dependencies = [
 
 [[package]]
 name = "cm-dashboard-shared"
-version = "0.1.38"
+version = "0.1.39"
 dependencies = [
  "chrono",
  "serde",

agent/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "cm-dashboard-agent"
-version = "0.1.39"
+version = "0.1.40"
 edition = "2021"
 
 [dependencies]

dashboard/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "cm-dashboard"
-version = "0.1.39"
+version = "0.1.40"
 edition = "2021"
 
 [dependencies]

dashboard/src/ui/mod.rs

@@ -246,20 +246,12 @@ impl TuiApp {
                     if let Some(hostname) = self.current_host.clone() {
                         // Create command that shows CM Dashboard logo and then rebuilds
                         let logo_and_rebuild = format!(
-                            "echo ''; \
-                             echo -e '\\033[1;32m  _____ __  __   _____            _     _                         _ \\033[0m'; \
-                             echo -e '\\033[1;32m / ____|  \\/  | |  __ \\          | |   | |                       | |\\033[0m'; \
-                             echo -e '\\033[1;32m| |    | \\  / | | |  | | __ _ ___| |__ | |__   ___   __ _ _ __ __| |\\033[0m'; \
-                             echo -e '\\033[1;32m| |    | |\\/| | | |  | |/ _` / __| \\'_ \\| \\'_ \\ / _ \\ / _` | \\'__/ _` |\\033[0m'; \
-                             echo -e '\\033[1;32m| |____| |  | | | |__| | (_| \\__ \\ | | | |_) | (_) | (_| | | | (_| |\\033[0m'; \
-                             echo -e '\\033[1;32m \\_____|_|  |_| |_____/ \\__,_|___/_| |_|_.__/ \\___/ \\__,_|_|  \\__,_|\\033[0m'; \
-                             echo ''; \
-                             echo -e '\\033[1;33m                    NixOS System Rebuild\\033[0m'; \
-                             echo -e '\\033[1;32m                       Target: {}\\033[0m'; \
-                             echo ''; \
-                             echo -e '\\033[1;90m────────────────────────────────────────────────────────────────────────────────\\033[0m'; \
-                             echo ''; \
-                             ssh -tt {}@{} 'bash -ic {}'",
+                            r"cat << 'EOF'
+NixOS System Rebuild
+Target: {}
+
+EOF
+ssh -tt {}@{} 'bash -ic {}'",
                             hostname,
                             self.config.ssh.rebuild_user,
                             hostname,

shared/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "cm-dashboard-shared"
-version = "0.1.39"
+version = "0.1.40"
 edition = "2021"
 
 [dependencies]