fix: wireguard health_check error + logs page ALL service + rotate confirmation

- WireGuardManager.test_connectivity: make peer_ip optional so health_check
  can call it without args (was logging ERROR on every health poll)
- Logs page: add ALL option to service selector (uses search across all services)
- Logs page: show service tag on each log line when in ALL/search mode
- Logs page: require window.confirm before rotating logs to prevent accidental data loss

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

webui/src/pages/Logs.jsx

@@ -6,7 +6,7 @@ import {
 } from 'lucide-react';
 import { monitoringAPI, logsAPI, containerAPI } from '../services/api';
 
-const SERVICES = ['network', 'wireguard', 'routing', 'email', 'calendar', 'files', 'vault', 'container'];
+const SERVICES = ['ALL', 'network', 'wireguard', 'routing', 'email', 'calendar', 'files', 'vault', 'container'];
 const LEVELS = ['ALL', 'DEBUG', 'INFO', 'WARNING', 'ERROR', 'CRITICAL'];
 const LEVEL_COLORS = {
   DEBUG: 'text-gray-400',
@@ -51,10 +51,11 @@ function ServiceLogsTab() {
   const fetch = useCallback(async () => {
     setLoading(true);
     try {
-      if (searchMode && query) {
+      const allServices = SERVICES.filter(s => s !== 'ALL');
+      if (service === 'ALL' || (searchMode && query)) {
         const res = await logsAPI.searchLogs({
-          query,
-          services: [service],
+          query: query || '',
+          services: service === 'ALL' ? allServices : [service],
           level: level === 'ALL' ? undefined : level,
         });
         setLogs(res.data.results || []);
@@ -273,7 +274,9 @@ function StatisticsTab() {
   useEffect(() => { fetch(); }, []);
 
   const rotate = async (service) => {
-    setRotating(service);
+    const label = service || 'all services';
+    if (!window.confirm(`Rotate logs for ${label}? Current log file will be archived and a new one started.`)) return;
+    setRotating(service || 'all');
     try {
       await logsAPI.rotateLogs(service || null);
       await fetch();