diff --git a/llm-api/plan_router.py b/llm-api/plan_router.py
index b36effb..e250ca0 100644
--- a/llm-api/plan_router.py
+++ b/llm-api/plan_router.py
@@ -1,15 +1,16 @@
 # -*- coding: utf-8 -*-
 """
-plan_router.py – v0.12.3 (WP-15)
+plan_router.py – v0.12.4 (WP-15)
 
 Minimal-CRUD für Plan-Templates & Pläne (POST/GET) + Idempotenz via Fingerprint.
 
-Änderungen ggü. v0.12.0/0.12.1/0.12.2:
-- NEU: GET /plan_templates – Liste & Filter (discipline, age_group, target_group, section, goal, keyword)
-- NEU: GET /plans – Liste & Filter (created_by, discipline, age_group, target_group, goal, section, created_from/created_to)
-- FIX/NEU: POST /plan materialisiert `plan_section_names` für robuste Section-Filter & Index
-- Beibeh.: Idempotenz via fingerprint, optionale Strict-Checks (template/exercises)
-- Swagger-Doku präzisiert
+Änderungen ggü. v0.12.1/0.12.3:
+- FIX: POST /plan materialisiert `plan_section_names` im Payload (robuste Section-Filter).
+- GET /plans filtert auf `plan_section_names` (statt verschachteltem `sections.name`).
+- GET /plan_templates & GET /plans: Filter + Paging + Swagger-Beschreibungen.
+- Optional: Strict-Checks (template_id/exercises) via ENV.
+
+Hinweis: KEYWORD-Index für `plans.plan_section_names` per bootstrap sicherstellen.
 """
 from fastapi import APIRouter, HTTPException, Query
 from pydantic import BaseModel, Field
@@ -325,17 +326,15 @@ def create_plan(p: Plan):
     if isinstance(payload.get("created_at"), datetime):
         payload["created_at"] = payload["created_at"].astimezone(timezone.utc).isoformat()
     # Materialisierte Section-Namen für robuste Filter/Indizes
-    """
     try:
-        payload["plan_section_names"] = _norm_list([s.get("name", "") for s in (payload.get("sections") or [])])
+        payload["plan_section_names"] = _norm_list([
+            (s.get("name") or "").strip() for s in (payload.get("sections") or []) if isinstance(s, dict)
+        ])
     except Exception:
-        payload["plan_section_names"] = _norm_list([s.name for s in (p.sections or [])])
-    """
-    try:
-        payload["plan_section_names"] = sorted({ (s.get("name") or "").strip() for s in (payload.get("sections") or []) if s.get("name") })
-    except Exception:
-        payload["plan_section_names"] = sorted({ (s.name or "").strip() for s in (p.sections or []) if getattr(s, "name", None) })
-    
+        payload["plan_section_names"] = _norm_list([
+            (getattr(s, "name", "") or "").strip() for s in (p.sections or [])
+        ])
+
     vec = _embed(_plan_embed_text(p))
     qdrant.upsert(collection_name=PLAN_COLLECTION, points=[PointStruct(id=str(p.id), vector=vec, payload=payload)])
     return p
@@ -397,7 +396,7 @@ def list_plans(
         must.append(FieldCondition(key="goals", match=MatchValue(value=goal)))
     if section:
         must.append(FieldCondition(key="plan_section_names", match=MatchValue(value=section)))
-        
+
     flt = Filter(must=must or None) if must else None
 
     fetch_n = max(offset + limit, 1)