Add configurable TIMEZONE for web UI display (UTC storage preserved)

server/routes/web_routes.py

@@ -11,9 +11,13 @@ from auth import verify_token, require_admin
 from models import Computer, Heartbeat, User, Notification, AuditLog, Setting
 from notifications import check_offline_computers, get_unread_count
 from settings_store import get_all_settings
+from timezone_utils import localtime, localtime_iso, get_common_timezones, get_current_timezone
 
 router = APIRouter()
 templates = Jinja2Templates(directory="templates")
+templates.env.filters["localtime"] = localtime
+templates.env.filters["localtime_iso"] = localtime_iso
+templates.env.globals["current_timezone"] = get_current_timezone
 
 
 def user_or_redirect(request: Request, db: Session):
@@ -118,7 +122,7 @@ def computer_page(computer_id: int, request: Request, db: Session = Depends(get_
     latest_sessions = []
     for h in heartbeats:
         hb_data.append({
-            "timestamp": h.timestamp.isoformat() if h.timestamp else None,
+            "timestamp": localtime_iso(h.timestamp),
             "username": h.username,
             "local_ip": h.local_ip,
             "cpu_percent": h.cpu_percent,
@@ -223,6 +227,7 @@ def admin_settings_page(request: Request, db: Session = Depends(get_db)):
             "request": request,
             "user": current_user,
             "settings": settings,
+            "timezones": get_common_timezones(),
             "unread_count": get_unread_count(db),
         },
     )