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

web/next.config.ts

@@ -4,7 +4,7 @@ import type { NextConfig } from "next";
  * This app proxies nothing.
  *
  * /api, /auth, /install, /update and /public are the Go server's, and routing
- * them there is the reverse proxy's job — the same proxy that already
+ * them there is the reverse proxy's job - the same proxy that already
  * terminates TLS in front of this process. Next used to rewrite them itself
  * from an API_URL naming the control plane, which meant every deployment had
  * two possible request paths for the same URL and one environment variable
@@ -23,7 +23,7 @@ const nextConfig: NextConfig = {
             {
                 // The API keys page briefly lived at /api-keys, which every
                 // raw-prefix proxy in front of this app captures with its /api
-                // rule — nginx's `location /api` matches /api-keys, so the
+                // rule - nginx's `location /api` matches /api-keys, so the
                 // request reached the Go server and 404'd. The page is at
                 // /tokens now precisely because that cannot happen to it.
                 source: "/api-keys",