fix: export build_memory_section function for fallback prompt

router_app.py

@@ -202,8 +202,8 @@ class RouterApp:
                 )
             else:
                 # Fallback: Memory only prompt
-                from utils.rag_prompt_builder import _build_memory_section
-                memory_section = _build_memory_section(memory_ctx)
+                from utils.rag_prompt_builder import build_memory_section
+                memory_section = build_memory_section(memory_ctx)
                 
                 final_prompt = (
                     "Ти — експерт-консультант з токеноміки та архітектури DAO в екосистемі DAARION.city.\n"

utils/rag_prompt_builder.py

@@ -41,7 +41,7 @@ def build_rag_prompt_with_citations(
     )
     
     # Build Memory section
-    memory_section = _build_memory_section(memory_context)
+    memory_section = build_memory_section(memory_context)
     
     # Build Documents section with citations
     documents_section = _build_documents_section(rag_citations, rag_documents)
@@ -65,7 +65,7 @@ def build_rag_prompt_with_citations(
     return "\n".join(prompt_parts)
 
 
-def _build_memory_section(memory_context: Dict[str, Any]) -> str:
+def build_memory_section(memory_context: Dict[str, Any]) -> str:
     """Build memory context section"""
     parts = []