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>

tests/legacy.py

@@ -0,0 +1,24 @@
+"""Legacy tests assert a synchronous response. Adapt ONLY tests via the actual worker.
+
+Production /builds always returns HTTP 202. This testing adapter submits to the
+real queue, drains it through the worker executor and returns the legacy report.
+It must never be imported from app/ or the production frontend.
+"""
+import json
+import re
+from fastapi.testclient import TestClient
+from httpx import Response
+from app import builder,db,worker
+
+class LegacyTestClient(TestClient):
+    def post(self,url,*args,**kwargs):
+        r=super().post(url,*args,**kwargs)
+        if r.status_code==202 and re.fullmatch(r'/api/sites/[^/]+/builds',str(url)):
+            result=r.json()
+            job=result['id']
+            worker.run_once(executor=lambda sid,opts: builder.build(sid,bool(opts.get('mirror_images',False))))
+            record=db.one('SELECT * FROM build_jobs WHERE id=?',(job,))
+            if record['state']=='done':
+                return Response(200,json=json.loads(record['result_json']),request=r.request)
+            return Response(400,json={'detail':record['error']},request=r.request)
+        return r