feat(ms22-p2): add AgentTemplate and UserAgent prisma schema

apps/api/prisma/schema.prisma

@@ -1703,3 +1703,39 @@ model UserAgentConfig {
   createdAt      DateTime @default(now())
   updatedAt      DateTime @updatedAt
 }
+
+model AgentTemplate {
+  id              String   @id @default(cuid())
+  name            String   @unique // "jarvis", "builder", "medic"
+  displayName     String // "Jarvis", "Builder", "Medic"
+  role            String // "orchestrator" | "coding" | "monitoring"
+  personality     String // SOUL.md content (markdown)
+  primaryModel    String // "opus", "codex", "haiku"
+  fallbackModels  Json     @default("[]") // ["sonnet", "haiku"]
+  toolPermissions Json     @default("[]") // ["exec", "read", "write", ...]
+  discordChannel  String? // "jarvis", "builder", "medic-alerts"
+  isActive        Boolean  @default(true)
+  isDefault       Boolean  @default(false) // Include in new user provisioning
+  createdAt       DateTime @default(now())
+  updatedAt       DateTime @updatedAt
+}
+
+model UserAgent {
+  id              String   @id @default(cuid())
+  userId          String
+  templateId      String? // null = custom agent
+  name            String // "jarvis", "builder", "medic" or custom
+  displayName     String
+  role            String
+  personality     String // User can customize
+  primaryModel    String?
+  fallbackModels  Json     @default("[]")
+  toolPermissions Json     @default("[]")
+  discordChannel  String?
+  isActive        Boolean  @default(true)
+  createdAt       DateTime @default(now())
+  updatedAt       DateTime @updatedAt
+
+  @@unique([userId, name])
+  @@index([userId])
+}