fix: rename reserved 'metadata' attribute to 'tab_metadata' in SQL models

backend/app/models/tender_detail.py

@@ -11,7 +11,7 @@ class TenderDetailTabModel(Base):
     tab_name = Column(String(100))  # Preguntas, Historial, Apertura, Adjudicación, Antecedentes, etc.
     tab_type = Column(String(50))  # questions, history, opening, adjudication, attachments, criteria
     content_summary = Column(Text)  # Summary of tab content
-    metadata = Column(JSON, nullable=True)  # Tab-specific data (counts, dates, etc.)
+    tab_metadata = Column(JSON, nullable=True)  # Tab-specific data (counts, dates, etc.)
     attachment_urls = Column(JSON, nullable=True)  # List of attachment URLs for this tab
     last_fetched = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
     html_content = Column(Text, nullable=True)  # Optional: store raw HTML for later parsing

backend/app/routers/tender_details.py

@@ -58,7 +58,7 @@ async def extract_and_save_detail_tabs(
                 tender_code=code,
                 tab_name=tab_data.get("name"),
                 tab_type=tab_type,
-                metadata=tab_data
+                tab_metadata=tab_data
             )
             db.add(tab_entry)