feat(ST-mgsu85hr): Prisma schema — token-velden op ClaudeJob + ModelPrice model (#112)

- Voeg model_id, input_tokens, output_tokens, cache_read_tokens, cache_write_tokens (nullable) toe aan ClaudeJob
- Voeg nieuw ModelPrice model toe met per-1M prijsvelden en currency default USD
- Migratie 20260506010013_add_token_usage_fields aangemaakt en toegepast
- Seed uitgebreid met standaardprijzen voor claude-opus-4-7, claude-sonnet-4-6, claude-haiku-4-5-20251001

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

prisma/migrations/20260506010013_add_token_usage_fields/migration.sql

@@ -0,0 +1,24 @@
+-- AlterTable
+ALTER TABLE "claude_jobs" ADD COLUMN     "cache_read_tokens" INTEGER,
+ADD COLUMN     "cache_write_tokens" INTEGER,
+ADD COLUMN     "input_tokens" INTEGER,
+ADD COLUMN     "model_id" TEXT,
+ADD COLUMN     "output_tokens" INTEGER;
+
+-- CreateTable
+CREATE TABLE "model_prices" (
+    "id" TEXT NOT NULL,
+    "model_id" TEXT NOT NULL,
+    "input_price_per_1m" DECIMAL(12,6) NOT NULL,
+    "output_price_per_1m" DECIMAL(12,6) NOT NULL,
+    "cache_read_price_per_1m" DECIMAL(12,6) NOT NULL,
+    "cache_write_price_per_1m" DECIMAL(12,6) NOT NULL,
+    "currency" TEXT NOT NULL DEFAULT 'USD',
+    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updated_at" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "model_prices_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex
+CREATE UNIQUE INDEX "model_prices_model_id_key" ON "model_prices"("model_id");

prisma/schema.prisma

@@ -336,6 +336,11 @@ model ClaudeJob {
   finished_at         DateTime?
   pushed_at           DateTime?
   verify_result       VerifyResult?
+  model_id            String?
+  input_tokens        Int?
+  output_tokens       Int?
+  cache_read_tokens   Int?
+  cache_write_tokens  Int?
   plan_snapshot       String?
   branch              String?
   pr_url              String?
@@ -353,6 +358,20 @@ model ClaudeJob {
   @@map("claude_jobs")
 }
 
+model ModelPrice {
+  id                        String   @id @default(cuid())
+  model_id                  String   @unique
+  input_price_per_1m        Decimal  @db.Decimal(12, 6)
+  output_price_per_1m       Decimal  @db.Decimal(12, 6)
+  cache_read_price_per_1m   Decimal  @db.Decimal(12, 6)
+  cache_write_price_per_1m  Decimal  @db.Decimal(12, 6)
+  currency                  String   @default("USD")
+  created_at                DateTime @default(now())
+  updated_at                DateTime @updatedAt
+
+  @@map("model_prices")
+}
+
 model ClaudeWorker {
   id           String   @id @default(cuid())
   user         User     @relation(fields: [user_id], references: [id], onDelete: Cascade)

prisma/seed.ts

@@ -193,6 +193,39 @@ async function main() {
     }
   }
 
+  const modelPrices = [
+    {
+      model_id: 'claude-opus-4-7',
+      input_price_per_1m: 15.0,
+      output_price_per_1m: 75.0,
+      cache_read_price_per_1m: 1.5,
+      cache_write_price_per_1m: 18.75,
+    },
+    {
+      model_id: 'claude-sonnet-4-6',
+      input_price_per_1m: 3.0,
+      output_price_per_1m: 15.0,
+      cache_read_price_per_1m: 0.3,
+      cache_write_price_per_1m: 3.75,
+    },
+    {
+      model_id: 'claude-haiku-4-5-20251001',
+      input_price_per_1m: 0.8,
+      output_price_per_1m: 4.0,
+      cache_read_price_per_1m: 0.08,
+      cache_write_price_per_1m: 1.0,
+    },
+  ]
+
+  for (const mp of modelPrices) {
+    await prisma.modelPrice.upsert({
+      where: { model_id: mp.model_id },
+      update: mp,
+      create: mp,
+    })
+    console.log(`  ModelPrice upserted: ${mp.model_id}`)
+  }
+
   console.log('\nSeeding complete!')
   console.log('Demo user:  username=demo     password=demo1234')
   console.log('Main user:  username=lars     password=scrum4me123')