add service management CLI, log path in dashboard footer

- numa service start/stop/status commands (launchd + systemd)
- Dashboard footer shows log paths (macOS + Linux) and GitHub link
- Help text updated with all service commands

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

site/dashboard.html

@@ -838,5 +838,11 @@ async function allowDomain(domain) {
 refresh();
 setInterval(refresh, 2000);
 </script>
+
+<div style="text-align:center;padding:0.8rem;font-family:var(--font-mono);font-size:0.68rem;color:var(--text-dim);">
+  Logs: <span id="logPath" style="user-select:all;">macOS: /usr/local/var/log/numa.log · Linux: journalctl -u numa -f</span>
+  · <a href="https://github.com/razvandimescu/numa" target="_blank" rel="noopener" style="color:var(--amber);text-decoration:none;">GitHub</a>
+</div>
+
 </body>
 </html>

src/main.rs

@@ -13,7 +13,10 @@ use numa::ctx::{handle_query, ServerCtx};
 use numa::override_store::OverrideStore;
 use numa::query_log::QueryLog;
 use numa::stats::ServerStats;
-use numa::system_dns::{discover_forwarding_rules, install_system_dns, uninstall_system_dns};
+use numa::system_dns::{
+    discover_forwarding_rules, install_service, install_system_dns, service_status,
+    uninstall_service, uninstall_system_dns,
+};
 
 #[tokio::main]
 async fn main() -> numa::Result<()> {
@@ -32,6 +35,19 @@ async fn main() -> numa::Result<()> {
             eprintln!("\x1b[1;38;2;192;98;58mNuma\x1b[0m — restoring system DNS\n");
             return uninstall_system_dns().map_err(|e| e.into());
         }
+        "service" => {
+            let sub = std::env::args().nth(2).unwrap_or_default();
+            eprintln!("\x1b[1;38;2;192;98;58mNuma\x1b[0m — service management\n");
+            return match sub.as_str() {
+                "start" => install_service().map_err(|e| e.into()),
+                "stop" => uninstall_service().map_err(|e| e.into()),
+                "status" => service_status().map_err(|e| e.into()),
+                _ => {
+                    eprintln!("Usage: numa service <start|stop|status>");
+                    Ok(())
+                }
+            };
+        }
         "help" | "--help" | "-h" => {
             eprintln!("Usage: numa [command] [config-path]");
             eprintln!();
@@ -39,6 +55,9 @@ async fn main() -> numa::Result<()> {
             eprintln!("  (none)          Start the DNS server (default)");
             eprintln!("  install         Set system DNS to 127.0.0.1 (requires sudo)");
             eprintln!("  uninstall       Restore original system DNS settings");
+            eprintln!("  service start   Install as system service (auto-start on boot)");
+            eprintln!("  service stop    Uninstall the system service");
+            eprintln!("  service status  Check if the service is running");
             eprintln!("  help            Show this help");
             eprintln!();
             eprintln!("Config path defaults to numa.toml");