Add TLS / Token, polling interval indicators.

socktop/src/ui/header.rs

@@ -35,7 +35,7 @@ pub fn draw_header(
         "socktop — connecting...".into()
     };
     // TLS indicator: lock vs lock with cross (using ✗). Keep explicit label for clarity.
-    let tls_txt = if is_tls { "🔒 TLS" } else { "�✗ TLS" };
+    let tls_txt = if is_tls { "🔒 TLS" } else { "🔒✗ TLS" };
     // Token indicator
     let tok_txt = if has_token { "🔑 token" } else { "" };
     let mi = metrics_interval.as_millis();