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/test_p0_backup.py

@@ -0,0 +1,28 @@
+"""Offline SQLite backup + restore smoke in an isolated directory."""
+import sqlite3
+import zipfile
+from pathlib import Path
+from app import db, backup
+from scripts.restore_backup import restore
+
+
+def test_sqlite_backup_and_restore_with_media(tmp_path,monkeypatch):
+    storage=tmp_path/'original'
+    storage.mkdir()
+    monkeypatch.setattr(db,'DATA',storage)
+    monkeypatch.setattr(db,'DB_FILE',storage/'siteforge.sqlite3')
+    db.init()
+    db.execute('INSERT INTO sites(id,name,created_at,updated_at) VALUES (?,?,?,?)',
+               ('restorecheck','Recovered Site',db.now(),db.now()))
+    media=storage/'media'/'restorecheck'/'logo.svg'
+    media.parent.mkdir(parents=True)
+    media.write_text('<svg/>',encoding='utf-8')
+    dest=backup.backup()
+    with zipfile.ZipFile(dest) as z:
+        assert 'siteforge.sqlite3' in z.namelist()
+        assert 'media/restorecheck/logo.svg' in z.namelist()
+    recovered=tmp_path/'restored'
+    restore(dest,recovered,confirmed=True)
+    with sqlite3.connect(recovered/'siteforge.sqlite3') as c:
+        assert c.execute("SELECT name FROM sites WHERE id='restorecheck'").fetchone()[0]=='Recovered Site'
+    assert (recovered/'media'/'restorecheck'/'logo.svg').read_text(encoding='utf-8')=='<svg/>'