refactor: UI improvements and code cleanup

Frontend:
- DetectionsList: Simplify columns, improve truncation and display for IPs, hosts, bot info
- IncidentsView: Replace metric cards with compact stat cards (unique IPs, known bots, ML anomalies, threat levels)
- InvestigationView: Add section navigation anchors, reorganize layout with proper IDs
- ThreatIntelView: Add navigation links to investigation pages, add comment column, improve table layout

Backend:
- Various route and model adjustments
- Configuration updates

Co-authored-by: Qwen-Coder <qwen-coder@alibabacloud.com>

backend/routes/entities.py

@@ -2,9 +2,7 @@
 Routes pour l'investigation d'entités (IP, JA4, User-Agent, Client-Header, Host, Path, Query-Param)
 """
 from fastapi import APIRouter, HTTPException, Query
-from typing import Optional, List, Dict, Any
-from datetime import datetime
-import json
+from typing import Optional, List
 
 from ..database import db
 from ..models import (
@@ -16,18 +14,10 @@ from ..models import (
 
 router = APIRouter(prefix="/api/entities", tags=["Entities"])
 
-db = db
-
-# Mapping des types d'entités
-ENTITY_TYPES = {
-    'ip': 'ip',
-    'ja4': 'ja4',
-    'user_agent': 'user_agent',
-    'client_header': 'client_header',
-    'host': 'host',
-    'path': 'path',
-    'query_param': 'query_param'
-}
+# Ensemble des types d'entités valides
+VALID_ENTITY_TYPES = frozenset({
+    'ip', 'ja4', 'user_agent', 'client_header', 'host', 'path', 'query_param'
+})
 
 
 def get_entity_stats(entity_type: str, entity_value: str, hours: int = 24) -> Optional[EntityStats]: