feat: add summary dashboard history charts

Sources/Model/API/ServerInfo.swift

@@ -19,6 +19,16 @@ struct ServerInfo: Codable, Hashable, Equatable {
             self.cpuCount = cpuCount
             self.level = level
         }
+
+        var displayPercent: Double {
+            let clampedPercent = min(max(percent, 0), 100)
+            guard clampedPercent != percent else {
+                return clampedPercent
+            }
+
+            let normalized = (minute1 / Double(max(cpuCount, 1))) * 100
+            return min(max(normalized, 0), 100)
+        }
     }
 
     struct Memory: Codable, Hashable, Equatable {
@@ -155,6 +165,7 @@ struct ServerInfo: Codable, Hashable, Equatable {
     var memory: Memory
     var swap: Memory
     var diskSpace: DiskSpace
+    var cpuUtilizationPercent: Double?
     var panelVersion: String
     var panelBuild: String
     var apiVersion: String
@@ -189,6 +200,13 @@ struct ServerInfo: Codable, Hashable, Equatable {
     var supportsRestartCommand: Bool {
         ServerInfo.version(apiVersion, isAtLeast: "2.14")
     }
+
+    var summaryCPUPercent: Double {
+        if let cpuUtilizationPercent {
+            return min(max(cpuUtilizationPercent, 0), 100)
+        }
+        return load.displayPercent
+    }
 }
 
 // MARK: - Helpers & Sample Data
@@ -284,6 +302,7 @@ extension ServerInfo {
         memory: Memory(free: 8_000_000_000, used: 4_000_000_000, total: 12_000_000_000, percent: 33.3),
         swap: Memory(free: 4_000_000_000, used: 1_000_000_000, total: 5_000_000_000, percent: 20.0),
         diskSpace: DiskSpace(free: 100_000_000_000, used: 50_000_000_000, total: 150_000_000_000, percent: 33.3),
+        cpuUtilizationPercent: 12.5,
         panelVersion: "25.0",
         panelBuild: "3394",
         apiVersion: "2",