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

src/ClaudeDo.Ui/Services/WorkerClient.cs

@@ -670,7 +670,12 @@ public sealed record AppSettingsDto(
     List<ModelPresetDto>? ModelPresets = null,
     int UsageGateFiveHourPct = 80,
     int UsageGateSevenDayPct = 90,
-    int MaxTurnsCeiling = 80);
+    int MaxTurnsCeiling = 80,
+    // Throttle stages per bucket — dragged on the usage-monitor gauges, not typed in Settings.
+    int UsageThrottleFiveHourSoftPct = 50,
+    int UsageThrottleFiveHourHardPct = 65,
+    int UsageThrottleSevenDaySoftPct = 50,
+    int UsageThrottleSevenDayHardPct = 65);
 
 // Per-model run defaults (effort + turn budget) edited in Settings → General.
 public sealed record ModelPresetDto(string Model, string Effort, int MaxTurns);
@@ -764,7 +769,13 @@ public sealed record UsageSnapshotDto(
     string? LastError,
     int ConfiguredSlots,
     int EffectiveSlots,
-    string? ThrottleBucket);
+    string? ThrottleBucket,
+    // Throttle stages per bucket, drawn (and dragged) on the usage-monitor gauges. Defaults match
+    // the DB defaults so an older worker that doesn't send them yet still yields sane markers.
+    int ThrottleFiveHourSoftPct = 50,
+    int ThrottleFiveHourHardPct = 65,
+    int ThrottleSevenDaySoftPct = 50,
+    int ThrottleSevenDayHardPct = 65);
 
 public sealed record ModelUsageRowDto(
     DateOnly Date,