feat: add suppression list (#192)

apps/web/prisma/schema.prisma

@@ -116,6 +116,7 @@ model Team {
   dailyEmailUsages DailyEmailUsage[]
   subscription     Subscription[]
   invites          TeamInvite[]
+  SuppressionList  SuppressionList[]
 }
 
 model TeamInvite {
@@ -222,6 +223,7 @@ enum EmailStatus {
   COMPLAINED
   FAILED
   CANCELLED
+  SUPPRESSED
 }
 
 model Email {
@@ -283,6 +285,12 @@ enum UnsubscribeReason {
   UNSUBSCRIBED
 }
 
+enum SuppressionReason {
+  HARD_BOUNCE
+  COMPLAINT
+  MANUAL
+}
+
 model Contact {
   id                String             @id @default(cuid())
   firstName         String?
@@ -387,3 +395,17 @@ model CumulatedMetrics {
 
   @@id([teamId, domainId])
 }
+
+model SuppressionList {
+  id        String            @id @default(cuid())
+  email     String // The suppressed email address
+  teamId    Int // Team that owns this suppression
+  reason    SuppressionReason // Why it was suppressed
+  source    String? // Source email ID that triggered suppression
+  createdAt DateTime          @default(now())
+  updatedAt DateTime          @updatedAt
+
+  team Team @relation(fields: [teamId], references: [id], onDelete: Cascade)
+
+  @@unique([teamId, email])
+}