feat(desktop): Spanish (es) UI translation + locale wiring

[virtualwolf-369]

Summary

Adds a complete Spanish (es) translation of the Hermes Desktop UI and wires the locale into the i18n system.

• src/i18n/es.ts — full translation (~1700 strings, 2098 keys matching en.ts 1:1).
• src/i18n/es-field-copy.ts — field labels/descriptions. Flattened to dotted keys ('display.personality') to match the FIELD_LABELS shape in constants.ts. The mirrored copy is passed raw to fieldLabels/fieldDescriptions (typed Record<string,string>), so a nested shape caused 2 TS errors and broke the Settings form at runtime. This fixes both.
• src/i18n/languages.ts, catalog.ts — register es locale (aliases es-es, es-mx, es-419, es-ar, es-cl, es-co, es-latam) with fallback to en.
• src/i18n/types.ts — widen field-copy type to allow dotted keys.
• electron/main.ts, electron/titlebar-overlay-width.ts — locale-aware titlebar.
• scripts/translate_*.py — offline translation helpers used to generate the catalog.

Translation quality notes

• Fixed literal false-friends that were reported by the user: toggle on/off → Activado/Desactivado (not En/Apagado), muted → Silenciado, smart (approval mode) → Inteligente (not Elegante), Comprometerse→Confirmar, sucursal→rama, Relaciones públicas→PR, Escenario→Preparar.
• Brand/technical terms kept in English on purpose: OpenAI, ElevenLabs, xAI (Grok), NeuTTS, ISO-639-3, Modal, Daytona, Stage.

Verification

• apps/desktop: npx tsc --noEmit -p tsconfig.json → 0 errors.
• npx vitest run src/i18n → 21/21 passing (languages, runtime, context tests).
• Deep key diff: es.ts vs en.ts = 2098/2098 keys, 0 missing. es-field-copy = 87 labels + 33 descriptions, all present.
• Tested in-app: Hermes Desktop launches and renders in Spanish with the corrected toggles.

Notes for reviewers

This is a contribution from a user who hit the gap; happy to adjust wording/register to match the project's style guide. The es-field-copy flattening is the load-bearing change — without it the Settings form silently renders English labels.

[alt-glitch]

This was generated by AI during triage.

Duplicate of #41230 — the earliest still-open desktop Spanish (es) locale PR covering the same apps/desktop/src/i18n/es.ts + locale-registration surface. Siblings #49036 and #54970 are also duplicates of #41230; the broader desktop+web combined PR #54415 and the spec issue #59780 are related. A maintainer should pick the canonical implementation among the open es-locale PRs.

[virtualwolf-369]

Closing as duplicate of #41230 (earliest still-open desktop Spanish locale PR, and the one currently being curated by maintainers).

For the record: this PR independently arrived at the same contextual fixes the triage flagged — e.g. toggle on/off → Activado/Desactivado (not the literal En/Apagado), muted → Silenciado, smart → Inteligente — and those are already present in #41230, so no translation value is lost by closing here. Great to see the es locale landing; thanks @sdyckjq-lab for driving the canonical implementation.