feat: integrate Just Works app and native business setup

Preserve hosted website UX inside Archipelago, add isolated Business and owner-authorized native wallet setup, and include deployment handoff. Based on main with native signer import already accepted.

docker/justworks/Dockerfile

@@ -0,0 +1,11 @@
+FROM docker.io/library/python:3.13-alpine@sha256:2d9aefe2fef018a7eb2c13064c89c71929800fd2e5dccdbf52ea5da5bb8d929a
+RUN apk add --no-cache nodejs
+WORKDIR /app
+COPY server.py payments.py boot.py ./
+COPY business ./business
+COPY public ./public
+COPY UPSTREAM-LICENSE /usr/share/licenses/justworks/LICENSE
+ENV PYTHONDONTWRITEBYTECODE=1 PYTHONUNBUFFERED=1
+USER 65534:65534
+EXPOSE 8340
+CMD ["python3", "boot.py"]