Adds full es.json translation (1170 keys, parity-checked against

[Stivenavila]

en.json), registers 'es' in LANGUAGES/resources/supportedLngs, and covers it in the anti-"Michael" hardcode test.

What & why

Adds Spanish (es) as a supported UI language. Fills es.json with a full
translation of en.json (1170 keys, parity-checked so no key is missing
or extra), registers 'es' in LANGUAGES/resources/supportedLngs in i18n/
index.ts, and extends the anti-"Michael" hardcode test to cover it.

Type of change

• Bug fix
• New feature
• Refactor / cleanup
• Docs
• Build / CI

Evidence

Before

After

How I tested it

• OS: Debian
• Steps:
  1. npm run typecheck → pasa sin errores (typecheck:node + typecheck:web)
  2. npm run test:focused → 834/834 tests pasan (incluye i18n-god-name.test.cjs con 'es' cubierto)
  3. npm run build → build exitoso (electron-vite build + copy:main-assets)
  4. Verificación manual en Settings → General → Language: app lanzada bajo xvfb con Playwright,
     confirmado por DOM que el pasa de ["English","简体中文","العربية"] a ["English","Español","简体中文","العربية"], y la UI se traduce al seleccionar Español (ver capturas Before/After) Credit (optional) Discord: X: xtaku Checklist [x] Before and after evidence is attached above, under both headings. [x] npm run typecheck passes. [x] npm run test:focused passes. [x] npm run build succeeds. [x] This PR is one change. Unrelated fixes belong in their own PR. [x] I read the diff myself before opening this, and there is no debug output, commented-out code, or unrelated formatting churn in it. [x] Any new UI derives from DESIGN.md / tokens.ts — no ad-hoc colors, spacing, or fonts. [ ] If I added art, it's my own or compatibly licensed, and listed in ATTRIBUTION.md.