feat(api): add agent fleet Prisma schema (MS22-P1a)

apps/api/prisma/schema.prisma

@@ -1625,3 +1625,81 @@ model ConversationArchive {
   @@index([startedAt])
   @@map("conversation_archives")
 }
+
+// ============================================
+// AGENT FLEET MODULE
+// ============================================
+
+model SystemConfig {
+  id        String   @id @default(cuid())
+  key       String   @unique
+  value     String
+  encrypted Boolean  @default(false)
+  updatedAt DateTime @updatedAt
+}
+
+model BreakglassUser {
+  id           String   @id @default(cuid())
+  username     String   @unique
+  passwordHash String
+  isActive     Boolean  @default(true)
+  createdAt    DateTime @default(now())
+  updatedAt    DateTime @updatedAt
+}
+
+model LlmProvider {
+  id          String   @id @default(cuid())
+  userId      String
+  name        String
+  displayName String
+  type        String
+  baseUrl     String?
+  apiKey      String?
+  apiType     String   @default("openai-completions")
+  models      Json     @default("[]")
+  isActive    Boolean  @default(true)
+  createdAt   DateTime @default(now())
+  updatedAt   DateTime @updatedAt
+
+  @@unique([userId, name])
+  @@index([userId])
+}
+
+model UserContainer {
+  id             String   @id @default(cuid())
+  userId         String   @unique
+  containerId    String?
+  containerName  String
+  gatewayPort    Int?
+  gatewayToken   String
+  status         String   @default("stopped")
+  lastActiveAt   DateTime?
+  idleTimeoutMin Int      @default(30)
+  config         Json     @default("{}")
+  createdAt      DateTime @default(now())
+  updatedAt      DateTime @updatedAt
+}
+
+model SystemContainer {
+  id           String   @id @default(cuid())
+  name         String   @unique
+  role         String
+  containerId  String?
+  gatewayPort  Int?
+  gatewayToken String
+  status       String   @default("stopped")
+  primaryModel String
+  isActive     Boolean  @default(true)
+  createdAt    DateTime @default(now())
+  updatedAt    DateTime @updatedAt
+}
+
+model UserAgentConfig {
+  id             String   @id @default(cuid())
+  userId         String   @unique
+  primaryModel   String?
+  fallbackModels Json     @default("[]")
+  personality    String?
+  createdAt      DateTime @default(now())
+  updatedAt      DateTime @updatedAt
+}