Add global /about command and configuration

- Introduced `BotAboutConfig` model for managing the global `/about` message in the owner panel.
- Implemented the `/about` command with localization support and integrated it into the help catalog.
- Enhanced the dashboard with a new owner section for configuring the `/about` message type and content.
- Updated components to handle the new command and its interactions, including support for different message formats (TEXT, EMBED, COMPONENTS_V2).
- Added localization entries for the `/about` command in English and German, improving accessibility for users.
- Documented the implementation in the phase tracking documentation for future reference.

docs/PHASE-TRACKING.md

@@ -350,6 +350,22 @@
 - [ ] Wartung an → Confirm, Discord zeigt Wartungstext, kein Rotating
 - [ ] VIEWER sieht Formular, kann nicht speichern
 
+## Post-Phase – Owner About /about (Status: implementiert)
+
+### Abgeschlossen (Code)
+
+- Core-Command `/about` (neben SPEC-`/info`); Help-Katalog + Locales DE/EN
+- Prisma `BotAboutConfig` Singleton + Migration `20260724120000_bot_about`
+- Owner `/owner/about`: TEXT / Embed / Components V2 (Builder), Redis-Cache, Audit
+- Components-V2-Source `a` für Button-Interaktionen aus `/about`
+
+### Manuell testen
+
+- [ ] Migration deploy + Bot/WebUI neu bauen
+- [ ] Owner About Embed speichern → `/about` zeigt Embed
+- [ ] About deaktivieren → Deaktiviert-Hinweis
+- [ ] `/info` unverändert technisch
+
 ## Post-Phase – Automod/Moderation Dashboard Ausbau (Status: implementiert)
 
 ### Abgeschlossen (Code)