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/backup.py

@@ -0,0 +1,35 @@
+"""Consistent SQLite + asset backup. Run: docker compose exec siteforge python -m app.backup"""
+import os
+import sqlite3
+import tempfile
+import zipfile
+from pathlib import Path
+from datetime import datetime, timezone
+from . import db
+
+
+def backup():
+    db.init()
+    storage=Path(db.DATA).resolve()
+    path=storage/'backups'
+    path.mkdir(exist_ok=True,parents=True)
+    name='siteforge-backup-'+datetime.now(timezone.utc).strftime('%Y%m%d-%H%M%S')+'.zip'
+    dest=path/name
+    # SQLite online backup is consistent even when the DB uses WAL mode.
+    with tempfile.TemporaryDirectory() as tmp:
+        snapshot=Path(tmp)/'siteforge.sqlite3'
+        with sqlite3.connect(db.DB_FILE) as source, sqlite3.connect(snapshot) as target:
+            source.backup(target)
+        with zipfile.ZipFile(dest,'w',compression=zipfile.ZIP_DEFLATED,compresslevel=5) as output:
+            output.write(snapshot,'siteforge.sqlite3')
+            for subdir in ('media','legacy','builds','archives'):
+                root=storage/subdir
+                if not root.is_dir():continue
+                for file in root.rglob('*'):
+                    if file.is_file() and not file.is_symlink():
+                        output.write(file, file.relative_to(storage).as_posix())
+    print(f'备份成功: {dest}')
+    print('注意：备份文件仍在 Docker 数据卷内。请使用 docker compose cp 或其他方式再复制到外部设备。')
+    return dest
+
+if __name__=='__main__':backup()