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.

packages/shared/src/owner.ts

@@ -1,4 +1,6 @@
 import { z } from 'zod';
+import { MessageComponentsV2Schema } from './components-v2.js';
+import { WelcomeEmbedSchema } from './phase2.js';
 
 const snowflake = z.string().regex(/^\d{17,20}$/);
 
@@ -114,3 +116,26 @@ export const OwnerAuditEntrySchema = z.object({
 export type OwnerAuditEntry = z.infer<typeof OwnerAuditEntrySchema>;
 
 export const PRESENCE_REDIS_KEY = 'bot:presence';
+
+export const BotAboutMessageTypeSchema = z.enum(['TEXT', 'EMBED', 'COMPONENTS_V2']);
+export type BotAboutMessageType = z.infer<typeof BotAboutMessageTypeSchema>;
+
+/** Global `/about` reply configured in the Owner panel. */
+export const BotAboutConfigSchema = z.object({
+  enabled: z.boolean(),
+  messageType: BotAboutMessageTypeSchema,
+  content: z.string().max(2000).nullable(),
+  embed: WelcomeEmbedSchema.nullable(),
+  components: MessageComponentsV2Schema.nullable()
+});
+
+export type BotAboutConfig = z.infer<typeof BotAboutConfigSchema>;
+
+export const BotAboutConfigPatchSchema = BotAboutConfigSchema.partial().refine(
+  (value) => Object.keys(value).length > 0,
+  { message: 'At least one field is required' }
+);
+
+export type BotAboutConfigPatch = z.infer<typeof BotAboutConfigPatchSchema>;
+
+export const ABOUT_REDIS_KEY = 'bot:about';