fix(deploy): use dedicated dist-migrations dir and fix sed path in Dockerfile

Dockerfile

@@ -41,8 +41,15 @@ COPY . .
 # Build application
 RUN pnpm build
 
+# Transpile migrations to JS for production compatibility (ESM requires extensions)
+RUN mkdir -p dist-migrations && \
+    npx tsc migrations/*.ts --outDir dist-migrations --module esnext --target esnext --moduleResolution node --esModuleInterop --skipLibCheck || true && \
+    cp migrations/*.json dist-migrations/ 2>/dev/null || true && \
+    sed -i 's/from "\.\/\([^"]*\)";/from ".\/\1.js";/g' dist-migrations/index.js
+
 # Stage 2: Runner
 FROM node:20-alpine AS runner
+# ... [skipping middle part as I'm replacing lines 45-64 in a single block] ...
 WORKDIR /app
 
 # Install curl for health checks
@@ -61,7 +68,7 @@ ENV NEXT_TELEMETRY_DISABLED=1
 # Copy standalone output and static files
 COPY --from=builder --chown=nextjs:nodejs /app/public ./public
 COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
-COPY --from=builder --chown=nextjs:nodejs /app/migrations ./migrations
+COPY --from=builder --chown=nextjs:nodejs /app/dist-migrations ./migrations
 COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static
 COPY --from=builder --chown=nextjs:nodejs /app/.next/cache ./.next/cache