feat(usage): split throttle thresholds per bucket, add draggable gauge markers

src/ClaudeDo.Ui/ViewModels/Modals/SettingsModalViewModel.cs

@@ -19,6 +19,9 @@ public sealed partial class SettingsModalViewModel : ViewModelBase
     public PrimeClaudeTabViewModel Prime { get; }
     public OnlineInboxSettingsViewModel OnlineInbox { get; }
     public SessionSkillsSettingsTabViewModel SessionSkills { get; }
+    
+    // Online Inbox ist unfertig und vor Usern verborgen — hier auf true für Reaktivierung.
+    public bool ShowOnlineInbox => false;
 
     [ObservableProperty] private string _validationError = "";
     [ObservableProperty] private bool _isBusy;
@@ -48,6 +51,10 @@ public sealed partial class SettingsModalViewModel : ViewModelBase
         SessionSkills = new SessionSkillsSettingsTabViewModel(worker);
     }
 
+    // Throttle stages are edited by dragging the usage-monitor gauges, not on any Settings tab —
+    // carried through load→save verbatim so saving Settings can never reset a dragged value.
+    private (int FiveSoft, int FiveHard, int SevenSoft, int SevenHard) _throttleStages = (50, 65, 50, 65);
+
     public async Task LoadAsync()
     {
         IsBusy = true;
@@ -64,6 +71,9 @@ public sealed partial class SettingsModalViewModel : ViewModelBase
                 General.MaxParallelExecutions = dto.MaxParallelExecutions;
                 General.UsageGateFiveHourPct = dto.UsageGateFiveHourPct;
                 General.UsageGateSevenDayPct = dto.UsageGateSevenDayPct;
+                _throttleStages = (
+                    dto.UsageThrottleFiveHourSoftPct, dto.UsageThrottleFiveHourHardPct,
+                    dto.UsageThrottleSevenDaySoftPct, dto.UsageThrottleSevenDayHardPct);
                 Worktrees.WorktreeStrategy = dto.WorktreeStrategy ?? "sibling";
                 Worktrees.CentralWorktreeRoot = dto.CentralWorktreeRoot;
                 Worktrees.WorktreeAutoCleanupEnabled = dto.WorktreeAutoCleanupEnabled;
@@ -115,7 +125,11 @@ public sealed partial class SettingsModalViewModel : ViewModelBase
                 General.ModelPresetDtos(),
                 General.UsageGateFiveHourPct,
                 General.UsageGateSevenDayPct,
-                General.MaxTurnsCeiling);
+                General.MaxTurnsCeiling,
+                _throttleStages.FiveSoft,
+                _throttleStages.FiveHard,
+                _throttleStages.SevenSoft,
+                _throttleStages.SevenHard);
             await _worker.UpdateAppSettingsAsync(dto);
             await Prime.SaveAsync();
             await OnlineInbox.SaveAsync();