update

backend/paths.py

@@ -1,6 +1,6 @@
 from pathlib import Path
 
-from config import STORAGE_DIR, PROJECTS_DIR
+from config import STORAGE_DIR, PROJECTS_DIR, PROJECT_ROOT
 
 THEMEN_DIR = STORAGE_DIR / "themen"
 
@@ -26,6 +26,28 @@ def subbausteine_path(topic: str) -> Path:
     return topic_dir(topic) / "subbausteine.json"
 
 
+def quelle_path(topic: str) -> Path:
+    """Persistierte Quellen-Wahl pro Thema: {type, ort, spec}."""
+    return topic_dir(topic) / "quelle.json"
+
+
+def quelle_crawl_dir(topic: str) -> Path:
+    """Zielordner für gecrawlte Link-Quellen (Seiten + PDF-.txt)."""
+    return topic_dir(topic) / "quelle"
+
+
+def safe_ordner(ort: str) -> Path | None:
+    """Ordnerpfad relativ zum Repo-Root, gesandboxt. None bei leer/Ausbruch (../, absolut außerhalb)."""
+    if not ort or not ort.strip():
+        return None
+    p = (PROJECT_ROOT / ort.strip()).resolve()
+    try:
+        p.relative_to(PROJECT_ROOT)
+    except ValueError:
+        return None
+    return p
+
+
 def guide_content_path(topic: str, format_name: str) -> Path:
     return topic_dir(topic) / "guides" / f"{format_name}.json"