Resolve linter contradictions: consolidate config, fix isort first-party, pylint 10/10

Agent-Logs-Url: https://github.com/christianlouis/dmarq/sessions/1e4a1f06-55b9-4040-853e-6aaf9ee574c8

Co-authored-by: christianlouis <361235+christianlouis@users.noreply.github.com>

backend/app/api/api_v1/endpoints/stats.py

@@ -1,9 +1,10 @@
 from typing import Any, Dict
 
+from fastapi import APIRouter, Depends, Path, Query
+from sqlalchemy.orm import Session
+
 from app.core.database import get_db
 from app.utils.stats_summarizer import StatsSummarizer
-from fastapi import APIRouter, Depends, Path, Query
-from sqlalchemy.orm import Session
 
 router = APIRouter()