Auto-reload listings on task completion and show all POIs in detail view

Thread onTaskCompleted callback from TaskIndicator through Header to App.tsx
so listings auto-refresh when a background task (e.g. POI distance calculation)
completes. Add AllPOIDistances component to PropertyCard that shows all user
POIs with travel times or — placeholder for missing modes.

frontend/src/components/TaskIndicator.tsx

@@ -4,7 +4,7 @@ import { fromOidcUser, type AuthUser } from '@/auth/types';
 import { POLLING_INTERVALS } from '@/constants';
 import { fetchTaskStatus, cancelTask, clearAllTasks } from '@/services';
 import { TaskStatus, type TaskResult } from '@/types';
-import { useEffect, useState } from 'react';
+import { useEffect, useState, useRef } from 'react';
 import { Tooltip, TooltipContent, TooltipProvider, TooltipTrigger } from './ui/tooltip';
 import { Button } from './ui/button';
 import { Loader2, CheckCircle2, XCircle, X, Trash2 } from 'lucide-react';
@@ -13,9 +13,10 @@ import { TaskProgressDrawer } from './TaskProgressDrawer';
 interface TaskIndicatorProps {
     taskID: string | null;
     onTaskCancelled?: () => void;
+    onTaskCompleted?: () => void;
 }
 
-export function TaskIndicator({ taskID, onTaskCancelled }: TaskIndicatorProps) {
+export function TaskIndicator({ taskID, onTaskCancelled, onTaskCompleted }: TaskIndicatorProps) {
     const [user, setUser] = useState<AuthUser | null>(null);
     const [progressPercentage, setProgressPercentage] = useState<number>(0);
     const [processed, setProcessed] = useState<number | null>(null);
@@ -26,6 +27,11 @@ export function TaskIndicator({ taskID, onTaskCancelled }: TaskIndicatorProps) {
     const [isClearing, setIsClearing] = useState(false);
     const [drawerOpen, setDrawerOpen] = useState(false);
 
+    const onTaskCompletedRef = useRef(onTaskCompleted);
+    useEffect(() => {
+        onTaskCompletedRef.current = onTaskCompleted;
+    }, [onTaskCompleted]);
+
     useEffect(() => {
         const passkeyUser = getStoredPasskeyUser();
         if (passkeyUser) {
@@ -73,6 +79,7 @@ export function TaskIndicator({ taskID, onTaskCancelled }: TaskIndicatorProps) {
                             // Ignore parsing errors
                         }
                     }
+                    onTaskCompletedRef.current?.();
                     return true; // Stop polling
                 }