fix: update chunk loading to use lists instead of dictionaries for emergency and treatment data

.gitignore

@@ -67,3 +67,6 @@ htmlcov/
 coverage.xml
 *.cover
 dataset/
+
+# no backup files
+customization_processing_backup/

src/retrieval.py

@@ -76,13 +76,13 @@ class BasicRetrievalSystem:
             emergency_chunks_path = cloud_loader.get_model_file_path("models/embeddings/emergency_chunks.json")
             with open(emergency_chunks_path, 'r', encoding='utf-8') as f:
                 emergency_data = json.load(f)
-                self.emergency_chunks = {i: chunk for i, chunk in enumerate(emergency_data)}
+                self.emergency_chunks = list(emergency_data or [])
             
             # Load treatment chunks  
             treatment_chunks_path = cloud_loader.get_model_file_path("models/embeddings/treatment_chunks.json")
             with open(treatment_chunks_path, 'r', encoding='utf-8') as f:
                 treatment_data = json.load(f)
-                self.treatment_chunks = {i: chunk for i, chunk in enumerate(treatment_data)}
+                self.treatment_chunks = list(treatment_data or [])
                 
             logger.info(f"Loaded {len(self.emergency_chunks)} emergency and {len(self.treatment_chunks)} treatment chunks")