Implement user-stopped service tracking system

Add comprehensive tracking for services stopped via dashboard to prevent
false alerts when users intentionally stop services.

Features:
- User-stopped services report Status::Ok instead of Warning
- Persistent storage survives agent restarts
- Dashboard sends UserStart/UserStop commands
- Agent tracks and syncs user-stopped state globally
- Systemd collector respects user-stopped flags

Implementation:
- New service_tracker module with persistent JSON storage
- Enhanced ServiceAction enum with UserStart/UserStop variants
- Global singleton tracker accessible by collectors
- Service status logic updated to check user-stopped flag
- Dashboard version now uses CARGO_PKG_VERSION automatically

Bump version to v0.1.43

dashboard/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "cm-dashboard"
-version = "0.1.42"
+version = "0.1.43"
 edition = "2021"
 
 [dependencies]

dashboard/src/app.rs

@@ -295,18 +295,18 @@ impl Dashboard {
     async fn execute_ui_command(&self, command: UiCommand) -> Result<()> {
         match command {
             UiCommand::ServiceStart { hostname, service_name } => {
-                info!("Sending start command for service {} on {}", service_name, hostname);
+                info!("Sending user start command for service {} on {}", service_name, hostname);
                 let agent_command = AgentCommand::ServiceControl {
                     service_name: service_name.clone(),
-                    action: ServiceAction::Start,
+                    action: ServiceAction::UserStart,
                 };
                 self.zmq_command_sender.send_command(&hostname, agent_command).await?;
             }
             UiCommand::ServiceStop { hostname, service_name } => {
-                info!("Sending stop command for service {} on {}", service_name, hostname);
+                info!("Sending user stop command for service {} on {}", service_name, hostname);
                 let agent_command = AgentCommand::ServiceControl {
                     service_name: service_name.clone(),
-                    action: ServiceAction::Stop,
+                    action: ServiceAction::UserStop,
                 };
                 self.zmq_command_sender.send_command(&hostname, agent_command).await?;
             }

dashboard/src/communication/mod.rs

@@ -36,6 +36,8 @@ pub enum ServiceAction {
     Start,
     Stop,
     Status,
+    UserStart,  // User-initiated start (clears user-stopped flag)
+    UserStop,   // User-initiated stop (marks as user-stopped)
 }
 
 /// ZMQ consumer for receiving metrics from agents

dashboard/src/main.rs

@@ -12,10 +12,6 @@ mod ui;
 
 use app::Dashboard;
 
-/// Get hardcoded version
-fn get_version() -> &'static str {
-    "v0.1.42"
-}
 
 /// Check if running inside tmux session
 fn check_tmux_session() {
@@ -42,7 +38,7 @@ fn check_tmux_session() {
 #[derive(Parser)]
 #[command(name = "cm-dashboard")]
 #[command(about = "CM Dashboard TUI with individual metric consumption")]
-#[command(version = get_version())]
+#[command(version)]
 struct Cli {
     /// Increase logging verbosity (-v, -vv)
     #[arg(short, long, action = clap::ArgAction::Count)]