diff --git a/prisma/migrations/20260428154820_add_finalist_confirmation_flow/migration.sql b/prisma/migrations/20260428154820_add_finalist_confirmation_flow/migration.sql
new file mode 100644
index 0000000..bf92d28
--- /dev/null
+++ b/prisma/migrations/20260428154820_add_finalist_confirmation_flow/migration.sql
@@ -0,0 +1,119 @@
+-- CreateEnum
+CREATE TYPE "WaitlistEntryStatus" AS ENUM ('WAITING', 'PROMOTED', 'USED');
+
+-- CreateEnum
+CREATE TYPE "FinalistConfirmationStatus" AS ENUM ('PENDING', 'CONFIRMED', 'DECLINED', 'EXPIRED', 'SUPERSEDED');
+
+-- AlterTable
+ALTER TABLE "Program" ADD COLUMN     "defaultAttendeeCap" INTEGER NOT NULL DEFAULT 3;
+
+-- CreateTable
+CREATE TABLE "FinalistSlotQuota" (
+    "id" TEXT NOT NULL,
+    "programId" TEXT NOT NULL,
+    "category" "CompetitionCategory" NOT NULL,
+    "quota" INTEGER NOT NULL,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "FinalistSlotQuota_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateTable
+CREATE TABLE "WaitlistEntry" (
+    "id" TEXT NOT NULL,
+    "programId" TEXT NOT NULL,
+    "projectId" TEXT NOT NULL,
+    "category" "CompetitionCategory" NOT NULL,
+    "rank" INTEGER NOT NULL,
+    "status" "WaitlistEntryStatus" NOT NULL DEFAULT 'WAITING',
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "WaitlistEntry_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateTable
+CREATE TABLE "FinalistConfirmation" (
+    "id" TEXT NOT NULL,
+    "projectId" TEXT NOT NULL,
+    "category" "CompetitionCategory" NOT NULL,
+    "status" "FinalistConfirmationStatus" NOT NULL DEFAULT 'PENDING',
+    "deadline" TIMESTAMP(3) NOT NULL,
+    "token" TEXT NOT NULL,
+    "confirmedAt" TIMESTAMP(3),
+    "declinedAt" TIMESTAMP(3),
+    "declineReason" TEXT,
+    "expiredAt" TIMESTAMP(3),
+    "promotedFromWaitlistEntryId" TEXT,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "FinalistConfirmation_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateTable
+CREATE TABLE "AttendingMember" (
+    "id" TEXT NOT NULL,
+    "confirmationId" TEXT NOT NULL,
+    "userId" TEXT NOT NULL,
+    "needsVisa" BOOLEAN NOT NULL DEFAULT false,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "AttendingMember_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex
+CREATE INDEX "FinalistSlotQuota_programId_idx" ON "FinalistSlotQuota"("programId");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "FinalistSlotQuota_programId_category_key" ON "FinalistSlotQuota"("programId", "category");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "WaitlistEntry_projectId_key" ON "WaitlistEntry"("projectId");
+
+-- CreateIndex
+CREATE INDEX "WaitlistEntry_programId_category_status_idx" ON "WaitlistEntry"("programId", "category", "status");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "WaitlistEntry_programId_category_rank_key" ON "WaitlistEntry"("programId", "category", "rank");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "FinalistConfirmation_projectId_key" ON "FinalistConfirmation"("projectId");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "FinalistConfirmation_token_key" ON "FinalistConfirmation"("token");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "FinalistConfirmation_promotedFromWaitlistEntryId_key" ON "FinalistConfirmation"("promotedFromWaitlistEntryId");
+
+-- CreateIndex
+CREATE INDEX "FinalistConfirmation_status_deadline_idx" ON "FinalistConfirmation"("status", "deadline");
+
+-- CreateIndex
+CREATE INDEX "FinalistConfirmation_category_status_idx" ON "FinalistConfirmation"("category", "status");
+
+-- CreateIndex
+CREATE INDEX "AttendingMember_userId_idx" ON "AttendingMember"("userId");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "AttendingMember_confirmationId_userId_key" ON "AttendingMember"("confirmationId", "userId");
+
+-- AddForeignKey
+ALTER TABLE "FinalistSlotQuota" ADD CONSTRAINT "FinalistSlotQuota_programId_fkey" FOREIGN KEY ("programId") REFERENCES "Program"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "WaitlistEntry" ADD CONSTRAINT "WaitlistEntry_programId_fkey" FOREIGN KEY ("programId") REFERENCES "Program"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "WaitlistEntry" ADD CONSTRAINT "WaitlistEntry_projectId_fkey" FOREIGN KEY ("projectId") REFERENCES "Project"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "FinalistConfirmation" ADD CONSTRAINT "FinalistConfirmation_projectId_fkey" FOREIGN KEY ("projectId") REFERENCES "Project"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "AttendingMember" ADD CONSTRAINT "AttendingMember_confirmationId_fkey" FOREIGN KEY ("confirmationId") REFERENCES "FinalistConfirmation"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "AttendingMember" ADD CONSTRAINT "AttendingMember_userId_fkey" FOREIGN KEY ("userId") REFERENCES "User"("id") ON DELETE CASCADE ON UPDATE CASCADE;
diff --git a/prisma/schema.prisma b/prisma/schema.prisma
index 5cfe1ec..3ebc63d 100644
--- a/prisma/schema.prisma
+++ b/prisma/schema.prisma
@@ -426,6 +426,9 @@ model User {
   // AI Ranking
   rankingSnapshots                  RankingSnapshot[]          @relation("TriggeredRankingSnapshots")
 
+  // Grand-finale logistics
+  finalistAttendances               AttendingMember[]
+
   @@index([role])
   @@index([status])
 }
@@ -483,6 +486,9 @@ model Program {
   description  String?
   settingsJson Json?         @db.JsonB
 
+  // Grand-finale logistics
+  defaultAttendeeCap Int @default(3) // Max team members allowed at the grand finale per finalist team
+
   createdAt DateTime @default(now())
   updatedAt DateTime @updatedAt
 
@@ -496,6 +502,10 @@ model Program {
   mentorMilestones  MentorMilestone[]
   competitions      Competition[]
 
+  // Grand-finale logistics
+  finalistSlotQuotas FinalistSlotQuota[]
+  waitlistEntries    WaitlistEntry[]
+
   @@unique([name, year])
   @@index([status])
 }
@@ -637,6 +647,10 @@ model Project {
   submissionPromotions  SubmissionPromotionEvent[]
   notificationLogs      NotificationLog[]
 
+  // Grand-finale logistics
+  waitlistEntry        WaitlistEntry?
+  finalistConfirmation FinalistConfirmation?
+
   @@index([programId])
   @@index([status])
   @@index([tags])
@@ -2626,3 +2640,89 @@ model ResultUnlockEvent {
   @@index([resultLockId])
   @@index([unlockedById])
 }
+
+// ─────────────────────────────────────────────────────────────────────────────
+// Grand-finale logistics (PR 1: finalist confirmation flow)
+// ─────────────────────────────────────────────────────────────────────────────
+
+enum WaitlistEntryStatus {
+  WAITING // available for promotion
+  PROMOTED // moved into a finalist slot
+  USED // promoted and confirmation flow completed (declined or accepted)
+}
+
+enum FinalistConfirmationStatus {
+  PENDING // sent, awaiting team response
+  CONFIRMED // team accepted, attendees selected
+  DECLINED // team explicitly declined
+  EXPIRED // deadline passed without response
+  SUPERSEDED // admin manually overrode (e.g. unconfirmed to allow quota decrease)
+}
+
+model FinalistSlotQuota {
+  id        String              @id @default(cuid())
+  programId String
+  category  CompetitionCategory
+  quota     Int
+  createdAt DateTime            @default(now())
+  updatedAt DateTime            @updatedAt
+
+  program Program @relation(fields: [programId], references: [id], onDelete: Cascade)
+
+  @@unique([programId, category])
+  @@index([programId])
+}
+
+model WaitlistEntry {
+  id        String              @id @default(cuid())
+  programId String
+  projectId String              @unique
+  category  CompetitionCategory
+  rank      Int
+  status    WaitlistEntryStatus @default(WAITING)
+  createdAt DateTime            @default(now())
+  updatedAt DateTime            @updatedAt
+
+  program Program @relation(fields: [programId], references: [id], onDelete: Cascade)
+  project Project @relation(fields: [projectId], references: [id], onDelete: Cascade)
+
+  @@unique([programId, category, rank])
+  @@index([programId, category, status])
+}
+
+model FinalistConfirmation {
+  id                          String                     @id @default(cuid())
+  projectId                   String                     @unique
+  category                    CompetitionCategory
+  status                      FinalistConfirmationStatus @default(PENDING)
+  deadline                    DateTime
+  token                       String                     @unique
+  confirmedAt                 DateTime?
+  declinedAt                  DateTime?
+  declineReason               String? // optional free-text on decline
+  expiredAt                   DateTime?
+  promotedFromWaitlistEntryId String?                    @unique // null for original finalists
+  createdAt                   DateTime                   @default(now())
+  updatedAt                   DateTime                   @updatedAt
+
+  project          Project           @relation(fields: [projectId], references: [id], onDelete: Cascade)
+  attendingMembers AttendingMember[]
+
+  @@index([status, deadline]) // for cron scan
+  @@index([category, status])
+}
+
+model AttendingMember {
+  id             String   @id @default(cuid())
+  confirmationId String
+  userId         String // must be a TeamMember of the same project (validated at write time)
+  needsVisa      Boolean  @default(false)
+  createdAt      DateTime @default(now())
+  updatedAt      DateTime @updatedAt
+
+  confirmation FinalistConfirmation @relation(fields: [confirmationId], references: [id], onDelete: Cascade)
+  user         User                 @relation(fields: [userId], references: [id], onDelete: Cascade)
+
+  @@unique([confirmationId, userId])
+  @@index([userId])
+}