style: remove hyphens from compound adjectives in comments and messages

Remove hyphens from compound adjectives such as "logged-in", "one-time", "password-protected", "full-height", "multi-file", and "S3-compatible" in comments, test error messages, and UI labels to improve readability and consistency.

backend/libs/handlers/auth.go

@@ -160,7 +160,7 @@ func (a *App) AccountSettings(w http.ResponseWriter, r *http.Request) {
 }
 
 // CreateUserToken mints a new personal access token and renders the account
-// page with the one-time plaintext shown. The secret is never recoverable after
+// page with the one time plaintext shown. The secret is never recoverable after
 // this response.
 func (a *App) CreateUserToken(w http.ResponseWriter, r *http.Request) {
 	user, ok := a.requireUser(w, r)