feat(panel): rename Account to Settings

The nav entry, page heading, and browser title now read Settings. The
route, template name, and Active key stay `account`, so existing links
and bookmarks keep working.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

internal/web/handlers_account.go

@@ -30,7 +30,7 @@ func (s *Server) handleAccount(w http.ResponseWriter, r *http.Request) {
 // field after a rejected submission; the password fields are never repopulated.
 func (s *Server) renderAccount(w http.ResponseWriter, r *http.Request, status int, formErr, formUsername string) {
 	s.render(w, status, "account", map[string]any{
-		"Title":        "SelfPost — account",
+		"Title":        "SelfPost — settings",
 		"User":         currentUser(r),
 		"Active":       "account",
 		"FormUsername": formUsername,

internal/web/templates/account.html

@@ -1,5 +1,5 @@
 {{define "content"}}
-<h1>Account</h1>
+<h1>Settings</h1>
 
 {{if .Flash}}<div class="flash">{{.Flash}}</div>{{end}}
 

internal/web/templates/layout.html

@@ -70,7 +70,7 @@
   {{template "sections" .}}
   <div class="session">
     <span class="muted">{{.User}}</span>
-    {{if eq .Active "account"}}<span aria-current="page">{{template "icon-account"}}Account</span>{{else}}<a href="/account">{{template "icon-account"}}Account</a>{{end}}
+    {{if eq .Active "account"}}<span aria-current="page">{{template "icon-account"}}Settings</span>{{else}}<a href="/account">{{template "icon-account"}}Settings</a>{{end}}
     <form class="inline" method="post" action="/logout">
       <button type="submit" class="danger">{{template "icon-sign-out"}}Sign out</button>
     </form>