Enhance Prisma schema and documentation for dashboard features

- Added new models for DashboardAccessRule and DashboardAuditLog to the Prisma schema, improving access control and logging capabilities.
- Updated GuildSettings model to include timezone support.
- Revised PHASE-TRACKING.md to reflect the completion of Phase 5 and outline upcoming Phase 6 features, including dashboard layout and settings framework.
- Exported new phase 6 features in shared index for better modularity.

packages/shared/src/index.ts

@@ -7,6 +7,7 @@ export * from './phase2.js';
 export * from './phase3.js';
 export * from './phase4.js';
 export * from './phase5.js';
+export * from './phase6.js';
 
 export const LocaleSchema = z.enum(['de', 'en']);
 export type Locale = z.infer<typeof LocaleSchema>;
@@ -14,6 +15,7 @@ export type Locale = z.infer<typeof LocaleSchema>;
 export const GuildSettingsSchema = z.object({
   guildId: z.string(),
   locale: LocaleSchema.default('de'),
+  timezone: z.string().default('Europe/Berlin'),
   moderationEnabled: z.boolean().default(true)
 });