Fix: COPY shared/ to ../shared/ (relative to WORKDIR /app) for tsconfig path resolution

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

studio-v2/Dockerfile

@@ -9,9 +9,9 @@ COPY studio-v2/package.json studio-v2/package-lock.json* ./
 # Install dependencies
 RUN npm install
 
-# Copy source files + shared types
+# Copy source files + shared types (../shared/ relative to /app)
 COPY studio-v2/ .
-COPY shared/ /shared/
+COPY shared/ ../shared/
 
 # Build arguments for environment variables (needed at build time for Next.js)
 ARG NEXT_PUBLIC_VOICE_SERVICE_URL