Enhance environment configuration and expand Prisma schema for bot management

- Added OWNER_USER_IDS to .env.example for specifying global bot owners.
- Introduced new models in the Prisma schema: CommandOverride, OwnerTeamMember, GlobalUserBlacklist, GuildBlacklist, FeatureFlag, BotPresenceConfig, ChangelogEntry, and OwnerAuditLog to support advanced bot management features.
- Updated env.ts to preprocess OWNER_USER_IDS for better handling of global bot owner IDs.
- Modified ModulePlaceholderPage to ensure proper routing for remaining dashboard modules.

apps/bot/prisma/schema.prisma

@@ -53,6 +53,7 @@ model Guild {
   guildBackups GuildBackup[]
   dashboardAccessRules DashboardAccessRule[]
   dashboardAuditLogs DashboardAuditLog[]
+  commandOverrides CommandOverride[]
 }
 
 model GuildSettings {
@@ -790,3 +791,93 @@ model GuildBackup {
   @@index([guildId, createdAt])
 }
 
+model CommandOverride {
+  id                String   @id @default(cuid())
+  guildId           String
+  commandName       String
+  enabled           Boolean  @default(true)
+  allowedRoleIds    String[] @default([])
+  deniedRoleIds     String[] @default([])
+  allowedChannelIds String[] @default([])
+  deniedChannelIds  String[] @default([])
+  cooldownSeconds   Int?
+  createdAt         DateTime @default(now())
+  updatedAt         DateTime @updatedAt
+  guild             Guild    @relation(fields: [guildId], references: [id], onDelete: Cascade)
+
+  @@unique([guildId, commandName])
+  @@index([guildId])
+}
+
+model OwnerTeamMember {
+  id        String   @id @default(cuid())
+  userId    String   @unique
+  role      String
+  note      String?
+  createdAt DateTime @default(now())
+  updatedAt DateTime @updatedAt
+}
+
+model GlobalUserBlacklist {
+  id          String   @id @default(cuid())
+  userId      String   @unique
+  reason      String?
+  note        String?
+  createdById String
+  createdAt   DateTime @default(now())
+  updatedAt   DateTime @updatedAt
+}
+
+model GuildBlacklist {
+  id          String   @id @default(cuid())
+  guildId     String   @unique
+  reason      String?
+  createdById String
+  createdAt   DateTime @default(now())
+  updatedAt   DateTime @updatedAt
+}
+
+model FeatureFlag {
+  id                String   @id @default(cuid())
+  key               String   @unique
+  enabled           Boolean  @default(false)
+  rolloutPercent    Int      @default(0)
+  whitelistGuildIds String[] @default([])
+  createdAt         DateTime @default(now())
+  updatedAt         DateTime @updatedAt
+}
+
+model BotPresenceConfig {
+  id                 String   @id @default("singleton")
+  status             String   @default("online")
+  activityType       String   @default("Playing")
+  activityText       String   @default("nexumi.de")
+  rotatingMessages   Json?
+  maintenanceMode    Boolean  @default(false)
+  maintenanceMessage String?
+  updatedAt          DateTime @updatedAt
+}
+
+model ChangelogEntry {
+  id          String   @id @default(cuid())
+  version     String
+  title       String
+  body        String
+  publishedAt DateTime @default(now())
+  createdAt   DateTime @default(now())
+  updatedAt   DateTime @updatedAt
+}
+
+model OwnerAuditLog {
+  id          String   @id @default(cuid())
+  actorUserId String
+  action      String
+  targetType  String?
+  targetId    String?
+  before      Json?
+  after       Json?
+  createdAt   DateTime @default(now())
+
+  @@index([createdAt])
+}
+