feat: Add method to get extractions by status and implement user info retrieval in extraction service

app/repositories/extraction.py

@@ -39,6 +39,15 @@ class ExtractionRepository(BaseRepository[Extraction]):
         )
         return list(result.all())
 
+    async def get_by_status(self, status: str) -> list[Extraction]:
+        """Get all extractions by status."""
+        result = await self.session.exec(
+            select(Extraction)
+            .where(Extraction.status == status)
+            .order_by(Extraction.created_at)
+        )
+        return list(result.all())
+
     async def get_pending_extractions(self) -> list[tuple[Extraction, User]]:
         """Get all pending extractions."""
         result = await self.session.exec(