ui: translate SCP80/RAM explorer labels, buttons and result strings

The RAM explorer HTML is generated after load, so its data-l10n sections
and Delete/Delete All buttons stayed English until a language switch, and
the memory/AID/lifecycle labels were hardcoded with no key at all.

- ramRenderExploreHtml() now builds every label and button with t()
  (reusing the existing Delete/Delete All/heading/AID keys and wiring the
  three previously-unused Application/Instance, Load File and Module AID
  keys); new RU keys cover Applications:, Free NV:, Free Volatile:, AID:,
  Lifecycle:, Privileges:, SD AID:, Implicit sel:, Version: and (none)
- the explorer dataset is cached in _ramExplorerData and re-rendered by
  refreshDynamicI18n() on language switch (cleared on op change/results
  reset)
- RAM flow strings localized too: Partial/OK summaries, error labels
  (Memory/ISD/Apps/ELFs/ELF Modules/no data), GET DATA progress, delete
  confirm/labels, install alerts/progress/steps and Error:
- tests: ram.test.js asserts every explorer label/button goes through t()
  and the (none) placeholder; SW cache v125 -> v126.

frontend/sw.js

@@ -1,4 +1,4 @@
-const CACHE = 'otaman-v125';
+const CACHE = 'otaman-v126';
 const URLS = [
   'index.html',
   'help.html',