v0.8.0 — full localization (es/pt/hi/de/fr) + keyed dashboard widget

Full localization. TigerShield now ships its own translations for es, pt (pt-BR), hi (Devanagari), de, and fr (alongside en). The admin UI and the security dashboard widget render in the active locale — autonomous modules own their i18n.

Fixed — dashboard widget was English-only + leaked a raw key. The Shield widget hardcoded every body string in render() and its title showed the raw tigershield.dashboard.title key on non-English admins. Every label now routes through the translator via owner-namespaced tigershield.* keys, with an active→en→key fallback so it never shows a key.