Add word-book practice, iOS app shell, and fix embedded WebView blank screen.

Ship dual-track learning (daily accumulation vs textbook),沪教/商务词书 APIs and UI, native iOS wrapper with bundled H5, and production book import on deploy.

Co-authored-by: Cursor <cursoragent@cursor.com>

deploy/install-production.sh

@@ -65,6 +65,15 @@ Base.metadata.create_all(bind=engine)
 print("tables ready")
 PY
 
+echo ">>> 导入词书目录（沪版 + 商务）"
+cd "$ROOT/backend"
+source venv/bin/activate
+if [ -d "$ROOT/backend/data/books" ] && ls "$ROOT/backend/data/books"/*.json >/dev/null 2>&1; then
+  python -m scripts.import_word_books
+else
+  echo "未找到 data/books/*.json，跳过词书导入"
+fi
+
 echo ">>> 构建前端"
 cd "$ROOT/frontend"
 if ! command -v npm >/dev/null 2>&1; then