feat: object words in right sidebar + design dropdown

- Words panel moved to right sidebar: shows selected object's words or pending words for new object
- Pending words auto-saved to object after creation
- Remove word chips from left sidebar object cards
- Design dropdown in left sidebar (above Fertigstellen), loads choices dynamically from Directus field metadata
- Include design field in db_pictures GET response

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app.py

@@ -1710,10 +1710,20 @@ def _find_or_create_db_word(titel_de: str, level: int, token: str) -> tuple:
 def directus_db_pictures():
     token = request.headers.get("Authorization", "")
     pic_status = request.args.get("status", "draft")
-    data, status = _directus("GET", f"/items/db_pictures?filter[status][_eq]={pic_status}&fields=id,picture,blurhash,status&sort=date_created", token)
+    data, status = _directus("GET", f"/items/db_pictures?filter[status][_eq]={pic_status}&fields=id,picture,blurhash,status,design&sort=date_created", token)
     return jsonify(data), status
 
 
+@app.route("/api/directus/db-pictures/design-options", methods=["GET"])
+def directus_db_pictures_design_options():
+    token = request.headers.get("Authorization", "")
+    data, status = _directus("GET", "/fields/db_pictures/design", token)
+    if status != 200:
+        return jsonify({"choices": []}), 200
+    choices = (data.get("data") or data).get("meta", {}).get("options", {}).get("choices", [])
+    return jsonify({"choices": choices})
+
+
 @app.route("/api/directus/db-pictures/<pic_id>", methods=["PATCH"])
 def directus_db_picture_patch(pic_id):
     token = request.headers.get("Authorization", "")