feat(discovery): DiscoverySuggestion schema + WatchedArtist.lastDiscoveredAt

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

web/prisma/migrations/20260711215631_add_discovery/migration.sql

@@ -0,0 +1,33 @@
+-- CreateEnum
+CREATE TYPE "DiscoveryKind" AS ENUM ('artist', 'album');
+
+-- CreateEnum
+CREATE TYPE "SuggestionStatus" AS ENUM ('pending', 'followed', 'wanted', 'dismissed');
+
+-- AlterTable
+ALTER TABLE "WatchedArtist" ADD COLUMN     "lastDiscoveredAt" TIMESTAMP(3);
+
+-- CreateTable
+CREATE TABLE "DiscoverySuggestion" (
+    "id" TEXT NOT NULL,
+    "kind" "DiscoveryKind" NOT NULL,
+    "artistMbid" TEXT NOT NULL,
+    "artistName" TEXT NOT NULL,
+    "rgMbid" TEXT,
+    "album" TEXT,
+    "primaryType" TEXT,
+    "secondaryTypes" TEXT[],
+    "firstReleaseDate" TEXT,
+    "score" DOUBLE PRECISION NOT NULL,
+    "seedCount" INTEGER NOT NULL,
+    "sources" TEXT[],
+    "status" "SuggestionStatus" NOT NULL DEFAULT 'pending',
+    "dedupeKey" TEXT NOT NULL,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "DiscoverySuggestion_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex
+CREATE UNIQUE INDEX "DiscoverySuggestion_dedupeKey_key" ON "DiscoverySuggestion"("dedupeKey");

web/prisma/schema.prisma

@@ -100,6 +100,7 @@ model WatchedArtist {
   showAllTypes      Boolean            @default(false)
   monitorFrom       DateTime           @default(now())
   lastPolledAt      DateTime?
+  lastDiscoveredAt  DateTime?
   createdAt         DateTime           @default(now())
   releases          MonitoredRelease[]
 }
@@ -123,3 +124,34 @@ model MonitoredRelease {
   createdAt           DateTime              @default(now())
   requests            Request[]
 }
+
+enum DiscoveryKind {
+  artist
+  album
+}
+
+enum SuggestionStatus {
+  pending
+  followed
+  wanted
+  dismissed
+}
+
+model DiscoverySuggestion {
+  id               String           @id @default(cuid())
+  kind             DiscoveryKind
+  artistMbid       String
+  artistName       String
+  rgMbid           String?
+  album            String?
+  primaryType      String?
+  secondaryTypes   String[]
+  firstReleaseDate String?
+  score            Float
+  seedCount        Int
+  sources          String[]
+  status           SuggestionStatus @default(pending)
+  dedupeKey        String           @unique
+  createdAt        DateTime         @default(now())
+  updatedAt        DateTime         @updatedAt
+}