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>

requirements.txt

@@ -0,0 +1,12 @@
+# Install from requirements.lock for deployments; this file records direct dependencies.
+beautifulsoup4==4.14.3
+bleach==4.1.0
+defusedxml==0.7.1
+fastapi==0.128.2
+httpx==0.28.1
+itsdangerous==2.2.0
+jinja2==3.1.6
+openpyxl==3.1.5
+python-multipart==0.0.29
+uvicorn==0.48.0
+PyMySQL==1.1.2