chore: replace em dashes with hyphens, add no-em-dash rule to CLAUDE.md

web/lib/guacConsole.ts

@@ -48,7 +48,7 @@ const STATUS_TEXT: Record<number, string> = {
   522: "The session timed out.",
   523: "The session was closed.",
   768: "The server rejected the connection request.",
-  769: "Authentication failed — check the credentials or SSH key.",
+  769: "Authentication failed - check the credentials or SSH key.",
   771: "Access to this connection was refused.",
   776: "The session was closed after a period of inactivity.",
   781: "The connection was closed because the client fell behind.",
@@ -110,7 +110,7 @@ export function openConsole(
 
   // Guacamole.Client.State: 0 IDLE, 1 CONNECTING, 2 WAITING, 3 CONNECTED,
   // 4 DISCONNECTING, 5 DISCONNECTED. CONNECTING and WAITING are one state to an
-  // operator — both mean "not usable yet".
+  // operator - both mean "not usable yet".
   client.onstatechange = (state: number) => {
     if (closing) return;
     if (state === 1 || state === 2) handlers.onState?.("connecting");