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>

app/reusables.py

@@ -0,0 +1,53 @@
+"""Site-scoped reusable editor component library with versioned snapshots."""
+import json
+from fastapi import APIRouter,Body,HTTPException,Request
+from . import db,enterprise,blueprints
+from .core import uid
+
+router=APIRouter(prefix='/api/sites',tags=['Reusable Components'])
+
+def setup():
+    with db.connect() as c:
+        c.executescript('''CREATE TABLE IF NOT EXISTS reusable_components(
+          id TEXT PRIMARY KEY,site_id TEXT NOT NULL REFERENCES sites(id) ON DELETE CASCADE,
+          name TEXT NOT NULL,version INTEGER NOT NULL DEFAULT 1,block_json TEXT NOT NULL,
+          updated_at TEXT NOT NULL);
+          CREATE INDEX IF NOT EXISTS idx_reuse_site ON reusable_components(site_id);
+        ''')
+
+@router.get('/{site_id}/components')
+def all_components(request:Request,site_id:str):
+    enterprise.require(request,site_id,'viewer')
+    return [{**r,'block':json.loads(r.pop('block_json'))} for r in db.rows(
+        'SELECT * FROM reusable_components WHERE site_id=? ORDER BY updated_at DESC',(site_id,))]
+
+@router.post('/{site_id}/components')
+def save_component(request:Request,site_id:str,payload:dict=Body(...)):
+    enterprise.require(request,site_id,'editor')
+    name=str(payload.get('name','')).strip()[:100]
+    if not name:raise HTTPException(400,'组件名称不能为空')
+    try:block=blueprints.validate_blocks([payload.get('block')])[0]
+    except (ValueError,TypeError) as exc:raise HTTPException(400,str(exc))
+    cid=uid()
+    db.insert('INSERT INTO reusable_components VALUES (?,?,?,?,?,?)',
+         (cid,site_id,name,1,json.dumps(block,ensure_ascii=False),db.now()))
+    return {'id':cid,'name':name,'version':1,'block':block}
+
+@router.put('/{site_id}/components/{component_id}')
+def update_component(request:Request,site_id:str,component_id:str,payload:dict=Body(...)):
+    enterprise.require(request,site_id,'editor')
+    current=db.one('SELECT * FROM reusable_components WHERE site_id=? AND id=?',(site_id,component_id))
+    if not current:raise HTTPException(404)
+    if payload.get('expected_version')!=current['version']:raise HTTPException(409,'组件已被修改，请重新加载')
+    try:block=blueprints.validate_blocks([payload.get('block')])[0]
+    except (ValueError,TypeError) as exc:raise HTTPException(400,str(exc))
+    db.execute('UPDATE reusable_components SET name=?,block_json=?,version=?,updated_at=? WHERE id=? AND site_id=?',
+      (str(payload.get('name') or current['name'])[:100],json.dumps(block,ensure_ascii=False),current['version']+1,db.now(),component_id,site_id))
+    return {'id':component_id,'version':current['version']+1}
+
+@router.delete('/{site_id}/components/{component_id}')
+def delete_component(request:Request,site_id:str,component_id:str):
+    enterprise.require(request,site_id,'editor')
+    if not db.execute('DELETE FROM reusable_components WHERE site_id=? AND id=?',(site_id,component_id)):
+        raise HTTPException(404)
+    return {'deleted':True}