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

web/components/settings/AuthProvidersCard.tsx

@@ -132,8 +132,8 @@ function ProviderRow({ p }: { p: AuthProvider }) {
         onSuccess: (_data, patch) => {
             setSecret("");
             invalidate();
-            // The lockout guard answers 409 here — the last way in cannot be
-            // switched off — so the outcome of this toggle is worth stating
+            // The lockout guard answers 409 here - the last way in cannot be
+            // switched off - so the outcome of this toggle is worth stating
             // rather than leaving to a checkbox that may have sprung back.
             toast.success(patch.client_secret ? `Client secret updated for ${p.name}.` : patch.enabled ? `${p.name} enabled.` : `${p.name} disabled.`);
         },

web/components/settings/MembersCard.tsx

@@ -85,7 +85,7 @@ export function MembersCard() {
     });
 
     // Removal failures are shown inside the confirm dialog that raised them, so
-    // only the inline role change lands here — otherwise the same sentence
+    // only the inline role change lands here - otherwise the same sentence
     // appears twice on screen.
     const actionError = roleError as Error | null;