fix: Docker 빌드 오류 수정 - prisma generate 명령어 및 타입 명시

- Dockerfile: prisma generate 명령어를 npx prisma generate로 수정
- feature-flag.ts: map 콜백 파라미터에 명시적 타입 추가

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Dockerfile

@@ -31,7 +31,7 @@ RUN pnpm install --frozen-lockfile
 COPY . .
 
 # Generate Prisma client & build
-RUN pnpm --filter @relink/database prisma generate
+RUN cd packages/database && npx prisma generate
 RUN pnpm turbo run build --filter=@relink/${APP_NAME}
 
 # --- Stage 3: Runner ---

packages/infrastructure/src/feature-flag.ts

@@ -1,9 +1,6 @@
 import type { PrismaClient } from '@prisma/client';
 
-export async function isFeatureEnabled(
-  prisma: PrismaClient,
-  flagKey: string,
-): Promise<boolean> {
+export async function isFeatureEnabled(prisma: PrismaClient, flagKey: string): Promise<boolean> {
   const flag = await prisma.featureFlag.findUnique({
     where: { flagKey },
     select: { isEnabled: true },
@@ -12,14 +9,14 @@ export async function isFeatureEnabled(
   return flag?.isEnabled ?? false;
 }
 
-export async function getFeatureFlags(
-  prisma: PrismaClient,
-): Promise<ReadonlyMap<string, boolean>> {
+export async function getFeatureFlags(prisma: PrismaClient): Promise<ReadonlyMap<string, boolean>> {
   const flags = await prisma.featureFlag.findMany({
     select: { flagKey: true, isEnabled: true },
   });
 
-  return new Map(flags.map((f) => [f.flagKey, f.isEnabled]));
+  return new Map(
+    flags.map((f: { flagKey: string; isEnabled: boolean }) => [f.flagKey, f.isEnabled]),
+  );
 }
 
 export async function setFeatureFlag(