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/static/js/05-theme.js

@@ -6,8 +6,8 @@
  * localStorage (no cookie, no server round-trip) and applies site-wide.
  *
  * CSP note: this is an external /static file, so it is allowed under
- * script-src 'self'. We only toggle an attribute / class — never inject inline
- * <style> — which keeps style-src 'self' happy.
+ * script-src 'self'. We only toggle an attribute / class and never inject inline
+ * <style>, which keeps style-src 'self' happy.
  */
 (function () {
   var STORAGE_KEY = "warpbox-theme";