feat: Drama Studio 프로젝트 초기 구조 설정

- FastAPI 백엔드 (audio-studio-api)
- Next.js 프론트엔드 (audio-studio-ui)
- Qwen3-TTS 엔진 (audio-studio-tts)
- MusicGen 서비스 (audio-studio-musicgen)
- Docker Compose 개발/운영 환경

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

audio-studio-ui/Dockerfile

@@ -0,0 +1,43 @@
+# Audio Studio UI - Dockerfile
+
+FROM node:22-alpine AS base
+
+# 의존성 설치
+FROM base AS deps
+WORKDIR /app
+
+COPY package.json package-lock.json* ./
+RUN npm ci
+
+# 빌드
+FROM base AS builder
+WORKDIR /app
+
+COPY --from=deps /app/node_modules ./node_modules
+COPY . .
+
+RUN npm run build
+
+# 프로덕션
+FROM base AS runner
+WORKDIR /app
+
+ENV NODE_ENV=production
+
+RUN addgroup --system --gid 1001 nodejs
+RUN adduser --system --uid 1001 nextjs
+
+COPY --from=builder /app/public ./public
+
+# standalone 모드 사용
+COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
+COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static
+
+USER nextjs
+
+EXPOSE 3000
+
+ENV PORT=3000
+ENV HOSTNAME="0.0.0.0"
+
+CMD ["node", "server.js"]