v0.21.0 — System health banner with colored indicators + tooltips

New row between top bar and content showing pill-shaped status indicators
for the system dependencies that PROSERVE needs (SteamVR, Vive Business
Streaming process, VR headset reachable on the network, etc.). Each pill
is colored : 🟢 OK, 🟠 limitation détectée (e.g. ping élevé), 🔴 KO,
gris = non configuré. Hover → tooltip with full check kind, target,
last RTT/process count and timestamp.

Architecture
- LocalConfig.HealthChecksConfig : list of HealthCheckEntry (Kind=Ping
  or Process, Target=IP/host or process name, ping thresholds in ms,
  refresh interval in s).
- ISystemHealthService + SystemHealthService : ping via
  System.Net.NetworkInformation.Ping (no admin required), process
  lookup via System.Diagnostics.Process.GetProcessesByName. Returns
  HealthResult { Severity, Detail }.
- HealthIndicatorViewModel : observable wrapper per entry with
  Severity-driven Brushes (background pill, border, icon colour) and
  composed Tooltip text.
- MainViewModel.InitHealthIndicators + StartHealthLoop : populates
  ObservableCollection<HealthIndicatorViewModel> from config and runs
  parallel checks every RefreshIntervalSeconds (default 10s).
- MainWindow.xaml : new Row 1 (between top bar and body) hosting an
  ItemsControl bound to HealthIndicators. Row collapses cleanly if the
  list is empty (HasHealthIndicators=false).

Defaults shipped (all editable in %LocalAppData%\PSLauncher\config.json)
- 🎮 SteamVR (Process : vrserver)
- 📡 Vive Business Streaming (Process : HtcConnectionUtility)
- 🥽 Casque VR (Ping : empty, user fills in the headset IP)

The Settings UI editor for managing the list is intentionally deferred
to a future iteration — config.json edit is enough to start using it.

Versions bumped to 0.21.0.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

installer/PSLauncher.iss

@@ -11,7 +11,7 @@
 
 #define MyAppName        "PROSERVE Launcher"
 #define MyAppShortName   "PS_Launcher"
-#define MyAppVersion     "0.20.0"
+#define MyAppVersion     "0.21.0"
 #define MyAppPublisher   "ASTERION VR"
 #define MyAppURL         "https://asterionvr.com"
 #define MyAppExeName     "PS_Launcher.exe"

src/PSLauncher.App/App.xaml.cs

@@ -17,6 +17,7 @@ using PSLauncher.Core.Licensing;
 using PSLauncher.Core.Localization;
 using PSLauncher.Core.Manifests;
 using PSLauncher.Core.DocTool;
+using PSLauncher.Core.Health;
 using PSLauncher.Core.Migrations;
 using PSLauncher.Core.Process;
 using PSLauncher.Core.ReportTool;
@@ -190,6 +191,8 @@ public partial class App : Application
                         configProvider: () => sp.GetRequiredService<LocalConfig>().DocTool,
                         sp.GetRequiredService<ILogger<DocToolDeployer>>()));
 
+                services.AddSingleton<ISystemHealthService, SystemHealthService>();
+
                 services.AddTransient<SettingsViewModel>();
                 services.AddSingleton<MainViewModel>();
                 services.AddSingleton<MainWindow>();

src/PSLauncher.App/PSLauncher.App.csproj

@@ -15,9 +15,9 @@
     <Product>PROSERVE Launcher</Product>
     <Copyright>© 2026 ASTERION VR — All rights reserved</Copyright>
     <RootNamespace>PSLauncher.App</RootNamespace>
-    <Version>0.20.0</Version>
-    <AssemblyVersion>0.20.0.0</AssemblyVersion>
-    <FileVersion>0.20.0.0</FileVersion>
+    <Version>0.21.0</Version>
+    <AssemblyVersion>0.21.0.0</AssemblyVersion>
+    <FileVersion>0.21.0.0</FileVersion>
 
     <!-- Single-file self-contained publish profile (used by `dotnet publish`) -->
     <PublishSingleFile>true</PublishSingleFile>

src/PSLauncher.App/ViewModels/HealthIndicatorViewModel.cs

@@ -0,0 +1,92 @@
+using System.Windows.Media;
+using CommunityToolkit.Mvvm.ComponentModel;
+using PSLauncher.Core.Health;
+using PSLauncher.Models;
+
+namespace PSLauncher.App.ViewModels;
+
+/// <summary>
+/// Représente un indicateur visuel (pill colorée) dans le bandeau de santé
+/// système. Mis à jour périodiquement par <see cref="MainViewModel"/> à
+/// partir du résultat de <see cref="ISystemHealthService.RunCheckAsync"/>.
+/// </summary>
+public sealed partial class HealthIndicatorViewModel : ObservableObject
+{
+    public HealthCheckEntry Entry { get; }
+
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(StatusBrush))]
+    [NotifyPropertyChangedFor(nameof(BorderBrush))]
+    [NotifyPropertyChangedFor(nameof(IconForeground))]
+    [NotifyPropertyChangedFor(nameof(Tooltip))]
+    private HealthSeverity _severity = HealthSeverity.Unknown;
+
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(Tooltip))]
+    private string _detail = "Pas encore vérifié";
+
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(Tooltip))]
+    private DateTime _lastCheckedUtc = DateTime.MinValue;
+
+    public string Name => Entry.Name;
+    public string Icon => Entry.Icon;
+
+    public Brush StatusBrush => Severity switch
+    {
+        // Pill background : un peu transparent pour que le bandeau reste discret
+        HealthSeverity.Ok      => new SolidColorBrush(Color.FromArgb(0x40, 0x16, 0xA3, 0x4A)), // vert
+        HealthSeverity.Warning => new SolidColorBrush(Color.FromArgb(0x50, 0xF5, 0x9E, 0x0B)), // orange
+        HealthSeverity.Error   => new SolidColorBrush(Color.FromArgb(0x50, 0xEF, 0x44, 0x44)), // rouge
+        _                      => new SolidColorBrush(Color.FromArgb(0x30, 0x80, 0x80, 0x90)), // gris
+    };
+
+    public Brush BorderBrush => Severity switch
+    {
+        HealthSeverity.Ok      => new SolidColorBrush(Color.FromRgb(0x16, 0xA3, 0x4A)),
+        HealthSeverity.Warning => new SolidColorBrush(Color.FromRgb(0xF5, 0x9E, 0x0B)),
+        HealthSeverity.Error   => new SolidColorBrush(Color.FromRgb(0xEF, 0x44, 0x44)),
+        _                      => new SolidColorBrush(Color.FromRgb(0x60, 0x60, 0x70)),
+    };
+
+    public Brush IconForeground => Severity switch
+    {
+        HealthSeverity.Ok      => new SolidColorBrush(Color.FromRgb(0x4A, 0xDE, 0x80)),
+        HealthSeverity.Warning => new SolidColorBrush(Color.FromRgb(0xFB, 0xBF, 0x24)),
+        HealthSeverity.Error   => new SolidColorBrush(Color.FromRgb(0xF8, 0x71, 0x71)),
+        _                      => new SolidColorBrush(Color.FromRgb(0xA0, 0xA0, 0xA8)),
+    };
+
+    public string Tooltip
+    {
+        get
+        {
+            var status = Severity switch
+            {
+                HealthSeverity.Ok      => "✓ OK",
+                HealthSeverity.Warning => "⚠ Limitation détectée",
+                HealthSeverity.Error   => "⛔ Problème",
+                _                      => "❓ Non vérifié",
+            };
+            var ts = LastCheckedUtc == DateTime.MinValue
+                ? ""
+                : $"\n\nDernière vérif : {LastCheckedUtc.ToLocalTime():HH:mm:ss}";
+            var kindLabel = Entry.Kind?.Equals("ping", StringComparison.OrdinalIgnoreCase) == true
+                ? $"Ping {Entry.Target}"
+                : $"Processus {Entry.Target}";
+            return $"{Entry.Icon}  {Entry.Name} — {status}\n{kindLabel}\n\n{Detail}{ts}";
+        }
+    }
+
+    public HealthIndicatorViewModel(HealthCheckEntry entry)
+    {
+        Entry = entry;
+    }
+
+    public void Apply(HealthResult result)
+    {
+        Severity = result.Severity;
+        Detail = result.Detail;
+        LastCheckedUtc = DateTime.UtcNow;
+    }
+}

src/PSLauncher.App/ViewModels/MainViewModel.cs

@@ -15,6 +15,7 @@ using PSLauncher.Core.Licensing;
 using PSLauncher.Core.Localization;
 using PSLauncher.Core.Manifests;
 using PSLauncher.Core.DocTool;
+using PSLauncher.Core.Health;
 using PSLauncher.Core.Migrations;
 using PSLauncher.Core.Process;
 using PSLauncher.Core.ReportTool;
@@ -45,6 +46,7 @@ public sealed partial class MainViewModel : ObservableObject
     private readonly IDatabaseMigrationService _migrationService;
     private readonly IReportToolDeployer _reportDeployer;
     private readonly IDocToolDeployer _docDeployer;
+    private readonly ISystemHealthService _healthService;
     private readonly IServiceProvider _serviceProvider;
     private readonly ILogger<MainViewModel> _logger;
 
@@ -63,6 +65,15 @@ public sealed partial class MainViewModel : ObservableObject
 
     public ObservableCollection<VersionRowViewModel> OtherVersions { get; } = new();
 
+    /// <summary>
+    /// Indicateurs affichés dans le bandeau de santé sous la top bar : pings,
+    /// processus requis (SteamVR, Vive Streaming, etc.). Liste construite depuis
+    /// <see cref="HealthChecksConfig.Checks"/> au démarrage. Refresh périodique
+    /// piloté par <see cref="StartHealthLoop"/>.
+    /// </summary>
+    public ObservableCollection<HealthIndicatorViewModel> HealthIndicators { get; } = new();
+    public bool HasHealthIndicators => HealthIndicators.Count > 0;
+
     [ObservableProperty]
     [NotifyPropertyChangedFor(nameof(HasFeaturedVersion))]
     [NotifyPropertyChangedFor(nameof(HasOtherVersions))]
@@ -236,6 +247,7 @@ public sealed partial class MainViewModel : ObservableObject
         IDatabaseMigrationService migrationService,
         IReportToolDeployer reportDeployer,
         IDocToolDeployer docDeployer,
+        ISystemHealthService healthService,
         IServiceProvider serviceProvider,
         ILogger<MainViewModel> logger)
     {
@@ -253,6 +265,7 @@ public sealed partial class MainViewModel : ObservableObject
         _migrationService = migrationService;
         _reportDeployer = reportDeployer;
         _docDeployer = docDeployer;
+        _healthService = healthService;
         _serviceProvider = serviceProvider;
         _logger = logger;
 
@@ -261,6 +274,7 @@ public sealed partial class MainViewModel : ObservableObject
         _license = _licenseService.GetCached();
 
         RebuildList();
+        InitHealthIndicators();
 
         // Vérification automatique des MAJ au démarrage (silencieuse et non bloquante)
         _ = Task.Run(async () =>
@@ -275,6 +289,62 @@ public sealed partial class MainViewModel : ObservableObject
             }
             catch (Exception ex) { _logger.LogWarning(ex, "Auto check at startup failed"); }
         });
+
+        // Boucle périodique des health checks. Ne tourne que si la config en
+        // contient au moins un. Premier passage immédiat puis re-check tous les
+        // RefreshIntervalSeconds.
+        StartHealthLoop();
+    }
+
+    /// <summary>
+    /// Construit la collection observable des indicateurs depuis la config et
+    /// notifie HasHealthIndicators pour que la UI cache le bandeau si la liste
+    /// est vide. Idempotent — appelée au startup uniquement, pas à chaque refresh.
+    /// </summary>
+    private void InitHealthIndicators()
+    {
+        HealthIndicators.Clear();
+        foreach (var entry in _config.HealthChecks.Checks)
+            HealthIndicators.Add(new HealthIndicatorViewModel(entry));
+        OnPropertyChanged(nameof(HasHealthIndicators));
+    }
+
+    /// <summary>
+    /// Lance une tâche en arrière-plan qui exécute tous les checks en parallèle,
+    /// applique les résultats sur les VM via le dispatcher UI, puis attend
+    /// RefreshIntervalSeconds avant de recommencer. La tâche tourne tant que
+    /// l'app vit ; pas de cancel explicite (l'arrêt suit la fermeture du process).
+    /// </summary>
+    private void StartHealthLoop()
+    {
+        if (HealthIndicators.Count == 0) return;
+        var interval = TimeSpan.FromSeconds(Math.Max(2, _config.HealthChecks.RefreshIntervalSeconds));
+        _ = Task.Run(async () =>
+        {
+            while (true)
+            {
+                try
+                {
+                    var snapshot = HealthIndicators.ToList();
+                    var tasks = snapshot.Select(async vm =>
+                    {
+                        try
+                        {
+                            var result = await _healthService.RunCheckAsync(vm.Entry, CancellationToken.None);
+                            await Application.Current.Dispatcher.InvokeAsync(() => vm.Apply(result));
+                        }
+                        catch (Exception ex)
+                        {
+                            _logger.LogDebug(ex, "Health check {Name} threw", vm.Entry.Name);
+                        }
+                    });
+                    await Task.WhenAll(tasks).ConfigureAwait(false);
+                }
+                catch (Exception ex) { _logger.LogDebug(ex, "Health loop tick"); }
+                try { await Task.Delay(interval).ConfigureAwait(false); }
+                catch { break; }
+            }
+        });
     }
 
     /// <summary>

src/PSLauncher.App/Views/MainWindow.xaml

@@ -198,16 +198,15 @@
             <ColumnDefinition Width="*" />
         </Grid.ColumnDefinitions>
         <Grid.RowDefinitions>
-            <RowDefinition Height="Auto" />
-            <RowDefinition Height="*" />
-            <RowDefinition Height="Auto" />
+            <RowDefinition Height="Auto" />   <!-- Top bar -->
+            <RowDefinition Height="Auto" />   <!-- Health banner -->
+            <RowDefinition Height="*" />      <!-- Body (sidebar + content) -->
+            <RowDefinition Height="Auto" />   <!-- Footer -->
         </Grid.RowDefinitions>
 
-        <!-- Background image : limité à la zone content (Row 1, Col 1) pour ne pas
-             passer derrière la sidebar ni le footer. ImageBrush avec AlignmentX=Right
-             + AlignmentY=Bottom : si le ratio fenêtre force un crop, on rogne en
-             haut/à gauche — le logo ASTERION VR en bas-droite reste TOUJOURS visible. -->
-        <Rectangle Grid.Row="1" Grid.Column="1" IsHitTestVisible="False">
+        <!-- Background image : limité à la zone content (Row 2, Col 1) pour ne pas
+             passer derrière la sidebar, le banner ou le footer. -->
+        <Rectangle Grid.Row="2" Grid.Column="1" IsHitTestVisible="False">
             <Rectangle.Fill>
                 <ImageBrush ImageSource="pack://application:,,,/Resources/Background.png"
                             Stretch="UniformToFill"
@@ -216,10 +215,7 @@
                             Opacity="0.25" />
             </Rectangle.Fill>
         </Rectangle>
-        <!-- Voile bleuté (~8% opacité) posé sur l'image pour donner la teinte
-             navy/cyan d'ASTERION VR. IsHitTestVisible=False pour ne pas bloquer
-             les clics qui visent le content area. -->
-        <Rectangle Grid.Row="1" Grid.Column="1"
+        <Rectangle Grid.Row="2" Grid.Column="1"
                    Fill="{StaticResource Brush.Bg.BlueTint}"
                    IsHitTestVisible="False" />
 
@@ -345,10 +341,54 @@
             </Grid>
         </Border>
 
-        <!-- ============== Content area (Row 1, Col 1, swap par CurrentPage) ==============
+        <!-- ============== Health banner (Row 1, ColSpan 2) ==============
+             Pills colorées indiquant l'état des dépendances système (SteamVR,
+             Vive Streaming, ping casque…). Cachée si la config n'a aucun check.
+             Tooltip détaillé au survol de chaque pill. -->
+        <Border Grid.Row="1" Grid.ColumnSpan="2"
+                Background="{StaticResource Brush.Bg.Sidebar}"
+                BorderBrush="{StaticResource Brush.Border}"
+                BorderThickness="0,0,0,1"
+                Padding="16,8"
+                Visibility="{Binding HasHealthIndicators, Converter={StaticResource BoolToVisibility}}">
+            <ItemsControl ItemsSource="{Binding HealthIndicators}">
+                <ItemsControl.ItemsPanel>
+                    <ItemsPanelTemplate>
+                        <StackPanel Orientation="Horizontal" />
+                    </ItemsPanelTemplate>
+                </ItemsControl.ItemsPanel>
+                <ItemsControl.ItemTemplate>
+                    <DataTemplate>
+                        <Border Background="{Binding StatusBrush}"
+                                BorderBrush="{Binding BorderBrush}"
+                                BorderThickness="1"
+                                CornerRadius="12"
+                                Padding="10,4"
+                                Margin="0,0,8,0"
+                                ToolTip="{Binding Tooltip}"
+                                ToolTipService.InitialShowDelay="200"
+                                ToolTipService.ShowDuration="20000">
+                            <StackPanel Orientation="Horizontal">
+                                <TextBlock Text="{Binding Icon}"
+                                           FontSize="14"
+                                           Foreground="{Binding IconForeground}"
+                                           VerticalAlignment="Center" />
+                                <TextBlock Text="{Binding Name}"
+                                           Margin="6,0,0,0"
+                                           FontSize="12"
+                                           Foreground="{StaticResource Brush.Text.Primary}"
+                                           VerticalAlignment="Center" />
+                            </StackPanel>
+                        </Border>
+                    </DataTemplate>
+                </ItemsControl.ItemTemplate>
+            </ItemsControl>
+        </Border>
+
+        <!-- ============== Content area (Row 2, Col 1, swap par CurrentPage) ==============
              Superpose plusieurs blocs (Library / Report / Documentation) gérés par
              leur Visibility liée à CurrentPage. -->
-        <Grid Grid.Row="1" Grid.Column="1">
+        <Grid Grid.Row="2" Grid.Column="1">
 
             <!-- ====================== LIBRARY PAGE ====================== -->
             <Grid Visibility="{Binding IsLibrary, Converter={StaticResource BoolToVisibility}}">
@@ -611,10 +651,10 @@
         <!-- ============== END Content area ============== -->
 
         <!-- ============== Left sidebar : nav buttons ==============
-             Row 1 + Row 2 (RowSpan=2) → la sidebar s'étend depuis le bas du
-             top bar jusqu'en bas de la fenêtre, peu importe la visibilité du
-             footer ou de la taille de la zone content. -->
-        <Border Grid.Row="1" Grid.RowSpan="2" Grid.Column="0"
+             Row 2 + RowSpan=2 → la sidebar s'étend depuis le bas du health
+             banner jusqu'en bas de la fenêtre, couvrant content + footer.
+             (Row 0 = top bar, Row 1 = health banner full-width.) -->
+        <Border Grid.Row="2" Grid.RowSpan="2" Grid.Column="0"
                 Background="#0A0A0E"
                 BorderBrush="{StaticResource Brush.Border}"
                 BorderThickness="0,0,1,0">
@@ -647,9 +687,10 @@
             </StackPanel>
         </Border>
 
-        <!-- Footer : Row 2, Col 1 → cantonné à la colonne content, sous la zone
-             Library/Report/Doc. La sidebar (RowSpan=2) le contourne par sa colonne. -->
-        <Border Grid.Row="2" Grid.Column="1"
+        <!-- Footer : Row 3, Col 1 → cantonné à la colonne content, sous la zone
+             Library/Report/Doc. La sidebar (RowSpan=2 sur rows 2-3) le contourne
+             par sa colonne. -->
+        <Border Grid.Row="3" Grid.Column="1"
                 Background="{StaticResource Brush.Bg.Footer}"
                 BorderBrush="{StaticResource Brush.Border}" BorderThickness="0,1,0,0"
                 Padding="20,10"

src/PSLauncher.Core/Health/ISystemHealthService.cs

@@ -0,0 +1,32 @@
+using PSLauncher.Models;
+
+namespace PSLauncher.Core.Health;
+
+/// <summary>
+/// Effectue les vérifications de santé système configurées dans
+/// <see cref="HealthChecksConfig"/> : ping IP, processus tournant, etc.
+/// </summary>
+public interface ISystemHealthService
+{
+    /// <summary>
+    /// Exécute un check unique en async (ping ou check de process). Le résultat
+    /// porte la sévérité + un détail textuel destiné au tooltip de la UI.
+    /// </summary>
+    Task<HealthResult> RunCheckAsync(HealthCheckEntry entry, CancellationToken ct);
+}
+
+public sealed record HealthResult(
+    HealthSeverity Severity,
+    string Detail);
+
+/// <summary>
+/// Sévérité d'un check. <see cref="Unknown"/> = check pas configuré
+/// (Target vide), affiché en gris.
+/// </summary>
+public enum HealthSeverity
+{
+    Unknown,
+    Ok,
+    Warning,
+    Error,
+}

src/PSLauncher.Core/Health/SystemHealthService.cs

@@ -0,0 +1,110 @@
+using System.Net.NetworkInformation;
+using Microsoft.Extensions.Logging;
+using PSLauncher.Models;
+// NB : on n'importe PAS System.Diagnostics car le namespace PSLauncher.Core.Process
+// existe déjà et provoque une ambiguïté avec System.Diagnostics.Process.
+// On qualifie complètement chaque usage pour rester sans ambiguïté.
+using SysProcess = System.Diagnostics.Process;
+
+namespace PSLauncher.Core.Health;
+
+/// <summary>
+/// Implémentation : Ping ICMP via <see cref="Ping"/>, et listing de processus
+/// via <see cref="Process.GetProcessesByName(string)"/>. Pas de privilèges
+/// administrateur requis (le ping classique ICMP fonctionne en user-mode sur
+/// Windows 10+ ; pas besoin du raw socket).
+/// </summary>
+public sealed class SystemHealthService : ISystemHealthService
+{
+    private readonly ILogger<SystemHealthService> _logger;
+
+    public SystemHealthService(ILogger<SystemHealthService> logger)
+    {
+        _logger = logger;
+    }
+
+    public async Task<HealthResult> RunCheckAsync(HealthCheckEntry entry, CancellationToken ct)
+    {
+        if (string.IsNullOrWhiteSpace(entry.Target))
+            return new HealthResult(HealthSeverity.Unknown, "Non configuré (Target vide)");
+
+        try
+        {
+            return entry.Kind?.Trim().ToLowerInvariant() switch
+            {
+                "ping"    => await CheckPingAsync(entry, ct).ConfigureAwait(false),
+                "process" => CheckProcess(entry),
+                _         => new HealthResult(HealthSeverity.Unknown, $"Kind inconnu : '{entry.Kind}'"),
+            };
+        }
+        catch (OperationCanceledException) { throw; }
+        catch (Exception ex)
+        {
+            _logger.LogDebug(ex, "Health check {Name} ({Kind} {Target}) failed", entry.Name, entry.Kind, entry.Target);
+            return new HealthResult(HealthSeverity.Error, $"Exception : {ex.GetType().Name} — {ex.Message}");
+        }
+    }
+
+    private static async Task<HealthResult> CheckPingAsync(HealthCheckEntry entry, CancellationToken ct)
+    {
+        using var ping = new Ping();
+        var timeout = entry.PingTimeoutMs ?? 1000;
+        PingReply reply;
+        try
+        {
+            reply = await ping.SendPingAsync(entry.Target, timeout).WaitAsync(ct).ConfigureAwait(false);
+        }
+        catch (PingException pex)
+        {
+            return new HealthResult(HealthSeverity.Error, $"Ping {entry.Target} : DNS introuvable ou réseau inaccessible ({pex.InnerException?.Message ?? pex.Message})");
+        }
+
+        if (reply.Status != IPStatus.Success)
+            return new HealthResult(HealthSeverity.Error,
+                $"Ping {entry.Target} : pas de réponse ({reply.Status})");
+
+        var rtt = reply.RoundtripTime;
+        var warn = entry.PingWarnMs ?? 50;
+        var err  = entry.PingErrorMs ?? 200;
+
+        if (rtt > err)
+            return new HealthResult(HealthSeverity.Error,
+                $"Ping {entry.Target} : {rtt} ms (seuil rouge {err} ms)");
+        if (rtt > warn)
+            return new HealthResult(HealthSeverity.Warning,
+                $"Ping {entry.Target} : {rtt} ms (seuil orange {warn} ms)");
+        return new HealthResult(HealthSeverity.Ok,
+            $"Ping {entry.Target} : {rtt} ms");
+    }
+
+    private static HealthResult CheckProcess(HealthCheckEntry entry)
+    {
+        // Process.GetProcessesByName accepte le nom sans extension .exe
+        var name = entry.Target.Trim();
+        if (name.EndsWith(".exe", StringComparison.OrdinalIgnoreCase))
+            name = name[..^4];
+
+        SysProcess[] procs;
+        try
+        {
+            procs = SysProcess.GetProcessesByName(name);
+        }
+        catch (Exception ex)
+        {
+            return new HealthResult(HealthSeverity.Error, $"Lookup processus échoué : {ex.Message}");
+        }
+        try
+        {
+            if (procs.Length == 0)
+                return new HealthResult(HealthSeverity.Error,
+                    $"Processus « {name}.exe » non lancé");
+            return new HealthResult(HealthSeverity.Ok,
+                $"« {name}.exe » est en cours d'exécution ({procs.Length} instance{(procs.Length > 1 ? "s" : "")})");
+        }
+        finally
+        {
+            // Process objects portent un handle Win32 à libérer
+            foreach (var p in procs) p.Dispose();
+        }
+    }
+}

src/PSLauncher.Models/LocalConfig.cs

@@ -64,6 +64,14 @@ public sealed class LocalConfig
     /// </summary>
     public DocToolConfig DocTool { get; set; } = new();
 
+    /// <summary>
+    /// Surveillance d'état système affichée en bandeau sous la top bar
+    /// (pings d'IP, processus requis comme SteamVR / Vive Business Streaming…).
+    /// Chaque check a un statut Vert (OK) / Orange (warn, ex. ping élevé) / Rouge
+    /// (KO). Tooltip détaillé au survol.
+    /// </summary>
+    public HealthChecksConfig HealthChecks { get; set; } = new();
+
     /// <summary>
     /// Connexion à la base MySQL locale (XAMPP) utilisée par PROSERVE pour ses
     /// statistiques. Le launcher s'en sert pour appliquer les migrations bundled
@@ -142,6 +150,74 @@ public sealed class DocToolConfig
     public int MaxBackups { get; set; } = 3;
 }
 
+public sealed class HealthChecksConfig
+{
+    /// <summary>Période de re-vérification, en secondes. 0 = désactivé.</summary>
+    public int RefreshIntervalSeconds { get; set; } = 10;
+
+    /// <summary>
+    /// Liste des checks à effectuer. Defaults = exemples typiques setup VR
+    /// (SteamVR + Vive Business Streaming + ping casque). L'utilisateur édite
+    /// la liste via <c>%LocalAppData%\PSLauncher\config.json</c> pour ajuster
+    /// les noms de processus, IPs et seuils ; un éditeur Settings est prévu
+    /// en v2 si le besoin est récurrent.
+    /// </summary>
+    public List<HealthCheckEntry> Checks { get; set; } = new()
+    {
+        new HealthCheckEntry
+        {
+            Name = "SteamVR",
+            Icon = "🎮",
+            Kind = "Process",
+            Target = "vrserver",
+        },
+        new HealthCheckEntry
+        {
+            Name = "Vive Business Streaming",
+            Icon = "📡",
+            Kind = "Process",
+            Target = "HtcConnectionUtility",
+        },
+        new HealthCheckEntry
+        {
+            Name = "Casque VR",
+            Icon = "🥽",
+            Kind = "Ping",
+            Target = "",   // À remplir avec l'IP réseau du casque ; vide = check désactivé
+            PingWarnMs = 50,
+            PingErrorMs = 200,
+            PingTimeoutMs = 1000,
+        },
+    };
+}
+
+public sealed class HealthCheckEntry
+{
+    /// <summary>Libellé affiché dans le bandeau, ex. "SteamVR".</summary>
+    public string Name { get; set; } = "";
+
+    /// <summary>Pictogramme emoji affiché à côté du nom, ex. "🎮", "📡", "🥽".</summary>
+    public string Icon { get; set; } = "🔌";
+
+    /// <summary>"Process" ou "Ping" (case-insensitive).</summary>
+    public string Kind { get; set; } = "Process";
+
+    /// <summary>
+    /// Selon Kind : nom du processus (sans .exe) pour Process,
+    /// IP/hostname pour Ping. Vide = check ignoré (statut Unknown).
+    /// </summary>
+    public string Target { get; set; } = "";
+
+    /// <summary>Pour Ping : RTT au-dessus duquel le statut passe en Warning (Orange). Default 50 ms.</summary>
+    public int? PingWarnMs { get; set; } = 50;
+
+    /// <summary>Pour Ping : RTT au-dessus duquel le statut passe en Error (Rouge). Default 200 ms.</summary>
+    public int? PingErrorMs { get; set; } = 200;
+
+    /// <summary>Pour Ping : timeout de la requête ICMP. Default 1 s.</summary>
+    public int? PingTimeoutMs { get; set; } = 1000;
+}
+
 public sealed class LicenseConfig
 {
     public string? EncryptedKey { get; set; }

src/PSLauncher.Updater/PSLauncher.Updater.csproj

@@ -8,7 +8,7 @@
     <LangVersion>latest</LangVersion>
     <AssemblyName>PS_Launcher.Updater</AssemblyName>
     <RootNamespace>PSLauncher.Updater</RootNamespace>
-    <Version>0.20.0</Version>
+    <Version>0.21.0</Version>
     <ApplicationIcon>..\PSLauncher.App\Resources\favicon.ico</ApplicationIcon>
     <Company>ASTERION VR</Company>
     <Copyright>© 2026 ASTERION VR — All rights reserved</Copyright>