diff --git a/services/platform-service/src/lib/cosmos-init.ts b/services/platform-service/src/lib/cosmos-init.ts
index 7e940933..180c0657 100644
--- a/services/platform-service/src/lib/cosmos-init.ts
+++ b/services/platform-service/src/lib/cosmos-init.ts
@@ -29,11 +29,29 @@ const CONTAINER_DEFS: Record<string, ContainerConfig> = {
   themes: { partitionKeyPath: '/id' },
   // Waitlist (pre-launch signups)
   waitlist: { partitionKeyPath: '/email' },
-  // Mobile capture primitives (MindLyst-style).
+  // MindLyst modules
+  brains: { partitionKeyPath: '/userId' },
+  streaks: { partitionKeyPath: '/userId' },
   memory_items: { partitionKeyPath: '/userId' },
   daily_briefs: { partitionKeyPath: '/userId' },
   reflections: { partitionKeyPath: '/userId' },
   brain_insights: { partitionKeyPath: '/userId' },
+  share_cards: { partitionKeyPath: '/userId' },
+  notification_log: { partitionKeyPath: '/userId' },
+  analytics_events: { partitionKeyPath: '/userId' },
+  brain_packs: { partitionKeyPath: '/userId' },
+  chat_sessions: { partitionKeyPath: '/userId' },
+  ab_experiments: { partitionKeyPath: '/id' },
+  waitlist_entries: { partitionKeyPath: '/id' },
+  email_captures: { partitionKeyPath: '/userId' },
+  engagement_campaigns: { partitionKeyPath: '/id' },
+  context_triggers: { partitionKeyPath: '/userId' },
+  monitoring_reports: { partitionKeyPath: '/type' },
+  nudge_state: { partitionKeyPath: '/userId' },
+  triage_retries: { partitionKeyPath: '/userId' },
+  // NOTE: MindLyst also uses 'referrals' with /userId partition key, but
+  // the growth module already registers it with /id. This mismatch needs
+  // a separate migration to reconcile.
   // NomGap fasting modules
   fasting_sessions: { partitionKeyPath: '/userId' },
   fasting_protocols: { partitionKeyPath: '/userId' },