chore: baseline V8.10.0-dev.1 with v8_workflows type-mapping fix and trade-pro spec

- SiteForge Enterprise V8.10.0-dev.1 upstream source (210 tests)
- Fix: v8_workflows._mapped_input now reads both 类型/分类 columns so WXR
  imports keep post/product types instead of collapsing to page
- Docs: trade-pro theme port spec (R3) and implementation plan

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

Dockerfile.enterprise

@@ -0,0 +1,15 @@
+FROM python:3.12-slim
+ENV PYTHONDONTWRITEBYTECODE=1 PYTHONUNBUFFERED=1 PIP_DISABLE_PIP_VERSION_CHECK=1 SITEFORGE_DATA_DIR=/data
+ARG SITEFORGE_GIT_SHA=unknown
+ENV SITEFORGE_GIT_SHA=${SITEFORGE_GIT_SHA}
+LABEL org.opencontainers.image.revision=${SITEFORGE_GIT_SHA}
+WORKDIR /opt/siteforge
+COPY requirements.lock requirements-enterprise.txt ./
+RUN pip install --no-cache-dir -r requirements.lock -r requirements-enterprise.txt && \
+    groupadd -g 10001 siteforge && useradd -u 10001 -g 10001 -s /usr/sbin/nologin siteforge && \
+    mkdir -p /data /published /srv/releases && chown -R siteforge:siteforge /data /published /srv/releases
+COPY --chown=siteforge:siteforge app/ ./app/
+COPY --chown=siteforge:siteforge themes/ ./themes/
+USER siteforge
+EXPOSE 8787
+CMD ["python","-m","uvicorn","app.main:app","--host","0.0.0.0","--port","8787","--proxy-headers","--forwarded-allow-ips","127.0.0.1"]