komplette überarbeitung des Gäste-Hilfebereichs und Ergänzung eines One-Time-Containers zum Aktualisieren der Hilfedokumente

docs/help/en/guest/settings-and-cache.md

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+---
+title: "Settings & Cache"
+locale: en
+slug: settings-and-cache
+audience: guest
+summary: "Update your profile, review legal pages, and manage local data."
+version_introduced: 2025.12
+requires_app_version: "^3.2.0"
+status: draft
+translation_state: aligned
+last_reviewed_at: 2025-12-24
+owner: guest-success@fotospiel.app
+related:
+  - slug: privacy-and-support
+  - slug: offline-sync
+---
+
+## Open settings
+Tap the gear icon in the header. You’ll find profile, legal pages, help, and cache tools.
+
+## Language
+- **Choose a language:** Switch between German and English in Settings.
+- **Event default:** The event’s preferred language is used by default.
+
+## Profile
+- **Change your display name:** Update or reset it under Profile.
+- **Shared devices:** Rename between sessions.
+
+## Legal & Help
+- **Legal pages:** Impressum, Privacy, and Terms are available in Settings.
+- **Help:** Opens the guest Help Center.
+
+## Clear cache
+- **What it does:** Removes local copies (including cached help articles).
+- **Important:** Pending uploads can be lost.
+- **Tip:** Clear cache only after uploads finish.
+
+## Appearance
+Use the sun/moon toggle in the header to switch light/dark mode.
+
+### Need more help?
+See `privacy-and-support` for data questions or `offline-sync` for offline behavior.