add google oauth login

prisma/migrations/20260706090000_add_user_oauth_accounts/migration.sql

@@ -0,0 +1,28 @@
+CREATE TABLE "user_oauth_accounts" (
+  "id" UUID NOT NULL DEFAULT gen_random_uuid(),
+  "user_id" UUID NOT NULL,
+  "provider" TEXT NOT NULL,
+  "provider_user_id" TEXT NOT NULL,
+  "email" TEXT,
+  "created_at" TIMESTAMPTZ(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+  "updated_at" TIMESTAMPTZ(3) NOT NULL,
+  CONSTRAINT "user_oauth_accounts_pkey" PRIMARY KEY ("id")
+);
+
+CREATE UNIQUE INDEX "user_oauth_accounts_provider_provider_user_id_key"
+  ON "user_oauth_accounts"("provider", "provider_user_id");
+
+CREATE INDEX "user_oauth_accounts_user_id_idx" ON "user_oauth_accounts"("user_id");
+
+ALTER TABLE "user_oauth_accounts"
+  ADD CONSTRAINT "user_oauth_accounts_user_id_fkey"
+  FOREIGN KEY ("user_id") REFERENCES "users"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+
+COMMENT ON TABLE "user_oauth_accounts" IS '중앙 사용자와 외부 OAuth 제공자 계정을 매핑한다';
+COMMENT ON COLUMN "user_oauth_accounts"."id" IS 'OAuth 계정 매핑 고유 ID';
+COMMENT ON COLUMN "user_oauth_accounts"."user_id" IS '연결된 중앙 사용자 ID';
+COMMENT ON COLUMN "user_oauth_accounts"."provider" IS 'OAuth 제공자 코드. 예: google';
+COMMENT ON COLUMN "user_oauth_accounts"."provider_user_id" IS 'OAuth 제공자가 발급한 사용자 고유 ID';
+COMMENT ON COLUMN "user_oauth_accounts"."email" IS 'OAuth 제공자에서 받은 이메일';
+COMMENT ON COLUMN "user_oauth_accounts"."created_at" IS '매핑 생성 시각';
+COMMENT ON COLUMN "user_oauth_accounts"."updated_at" IS '매핑 수정 시각';

prisma/schema.prisma

@@ -44,10 +44,26 @@ model User {
   affiliations  UserAffiliation[]
   userLicenses  UserLicense[]
   appRoles      UserAppRole[]
+  oauthAccounts UserOauthAccount[]
 
   @@map("users")
 }
 
+model UserOauthAccount {
+  id             String   @id @default(uuid()) @db.Uuid
+  userId         String   @map("user_id") @db.Uuid
+  provider       String
+  providerUserId String   @map("provider_user_id")
+  email          String?
+  createdAt      DateTime @default(now()) @map("created_at") @db.Timestamptz(3)
+  updatedAt      DateTime @updatedAt @map("updated_at") @db.Timestamptz(3)
+  user           User     @relation(fields: [userId], references: [id], onDelete: Cascade)
+
+  @@unique([provider, providerUserId])
+  @@index([userId])
+  @@map("user_oauth_accounts")
+}
+
 model UserAppRole {
   id           String    @id @default(uuid()) @db.Uuid
   userId       String    @map("user_id") @db.Uuid