chore: ajoute ruff (lint) et corrige les violations

- Config ruff dans pyproject.toml : règles E/W/F/I/UP/B, whitelist des appels
  d'injection FastAPI (Depends/File/Form/Query) pour B008, B904 ignoré
  (traduction volontaire des exceptions en réponses HTTP)
- Auto-fixes : tri des imports, suppression d'imports inutilisés, annotations
  PEP 604, f-strings sans placeholder, modes open redondants
- Suppression de variables inutilisées (config.reset_setting, parser locataires)

ruff check . : All checks passed ; 61 tests OK

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/plesna_gerance/api/routes/analytics.py

@@ -1,25 +1,25 @@
 """Analytics routes - Data analysis and reporting endpoints."""
 
-from datetime import date
 from collections import defaultdict
+from datetime import date
 
 from fastapi import APIRouter, Depends, Query
+from sqlalchemy import distinct, func, select
 from sqlalchemy.orm import Session
-from sqlalchemy import select, func, distinct, extract
 
 from ...database import get_session
 from ...database.models import Depense, Document, Immeuble, Lot, Tag
 from ..schemas.models import (
-    ImmeubleResponse,
-    LotResponse,
+    CategorySummary,
     DepenseDetail,
     DepensesSummary,
-    CategorySummary,
-    TagSummary,
-    MonthlySummary,
-    FournisseurSummary,
     FournisseurResponse,
+    FournisseurSummary,
+    ImmeubleResponse,
+    LotResponse,
+    MonthlySummary,
     TagResponse,
+    TagSummary,
 )
 
 router = APIRouter(prefix="/api", tags=["analytics"])