Migrate billing backend from Django to Express + Apollo Server + Prisma

Replace Python/Django/Graphene with TypeScript/Express/Apollo Server.
Same 2 endpoints (team/m2m), same JWT auth, same TigerBeetle integration.
Prisma ORM replaces Django ORM for Account/OperationCode/ServiceAccount.

Dockerfile

@@ -1,24 +1,28 @@
-FROM python:3.12-slim
-
-ENV PYTHONDONTWRITEBYTECODE=1 \
-    PYTHONUNBUFFERED=1 \
-    NIXPACKS_POETRY_VERSION=2.2.1
+FROM node:22-alpine AS builder
 
 WORKDIR /app
 
-RUN apt-get update \
-    && apt-get install -y --no-install-recommends build-essential curl \
-    && rm -rf /var/lib/apt/lists/*
+COPY package.json ./
+RUN npm install
 
-RUN python -m venv --copies /opt/venv
-ENV VIRTUAL_ENV=/opt/venv
-ENV PATH="/opt/venv/bin:$PATH"
+COPY prisma ./prisma
+RUN npx prisma generate
 
-COPY . .
+COPY tsconfig.json ./
+COPY src ./src
+RUN npm run build
 
-RUN pip install --no-cache-dir poetry==$NIXPACKS_POETRY_VERSION \
-    && poetry install --no-interaction --no-ansi
+FROM node:22-alpine
 
-ENV PORT=8000
+WORKDIR /app
 
-CMD ["sh", "-c", "poetry run python manage.py migrate && poetry run python manage.py collectstatic --noinput && poetry run python -m gunicorn billing.wsgi:application --bind 0.0.0.0:${PORT:-8000}"]
+COPY package.json ./
+RUN npm install --omit=dev
+
+COPY --from=builder /app/node_modules/.prisma ./node_modules/.prisma
+COPY --from=builder /app/dist ./dist
+COPY prisma ./prisma
+
+EXPOSE 8000
+
+CMD ["sh", "-c", "npx prisma migrate deploy && node dist/index.js"]