refactor(macos): dedupe UI, pairing, and runtime helpers

apps/macos/Sources/OpenClaw/UsageCostData.swift

@@ -12,13 +12,92 @@ struct GatewayCostUsageTotals: Codable {
 
 struct GatewayCostUsageDay: Codable {
     let date: String
-    let input: Int
-    let output: Int
-    let cacheRead: Int
-    let cacheWrite: Int
-    let totalTokens: Int
-    let totalCost: Double
-    let missingCostEntries: Int
+    private let totals: GatewayCostUsageTotals
+
+    var input: Int {
+        self.totals.input
+    }
+
+    var output: Int {
+        self.totals.output
+    }
+
+    var cacheRead: Int {
+        self.totals.cacheRead
+    }
+
+    var cacheWrite: Int {
+        self.totals.cacheWrite
+    }
+
+    var totalTokens: Int {
+        self.totals.totalTokens
+    }
+
+    var totalCost: Double {
+        self.totals.totalCost
+    }
+
+    var missingCostEntries: Int {
+        self.totals.missingCostEntries
+    }
+
+    init(
+        date: String,
+        input: Int,
+        output: Int,
+        cacheRead: Int,
+        cacheWrite: Int,
+        totalTokens: Int,
+        totalCost: Double,
+        missingCostEntries: Int)
+    {
+        self.date = date
+        self.totals = GatewayCostUsageTotals(
+            input: input,
+            output: output,
+            cacheRead: cacheRead,
+            cacheWrite: cacheWrite,
+            totalTokens: totalTokens,
+            totalCost: totalCost,
+            missingCostEntries: missingCostEntries)
+    }
+
+    private enum CodingKeys: String, CodingKey {
+        case date
+        case input
+        case output
+        case cacheRead
+        case cacheWrite
+        case totalTokens
+        case totalCost
+        case missingCostEntries
+    }
+
+    init(from decoder: Decoder) throws {
+        let c = try decoder.container(keyedBy: CodingKeys.self)
+        self.date = try c.decode(String.self, forKey: .date)
+        self.totals = GatewayCostUsageTotals(
+            input: try c.decode(Int.self, forKey: .input),
+            output: try c.decode(Int.self, forKey: .output),
+            cacheRead: try c.decode(Int.self, forKey: .cacheRead),
+            cacheWrite: try c.decode(Int.self, forKey: .cacheWrite),
+            totalTokens: try c.decode(Int.self, forKey: .totalTokens),
+            totalCost: try c.decode(Double.self, forKey: .totalCost),
+            missingCostEntries: try c.decode(Int.self, forKey: .missingCostEntries))
+    }
+
+    func encode(to encoder: Encoder) throws {
+        var c = encoder.container(keyedBy: CodingKeys.self)
+        try c.encode(self.date, forKey: .date)
+        try c.encode(self.input, forKey: .input)
+        try c.encode(self.output, forKey: .output)
+        try c.encode(self.cacheRead, forKey: .cacheRead)
+        try c.encode(self.cacheWrite, forKey: .cacheWrite)
+        try c.encode(self.totalTokens, forKey: .totalTokens)
+        try c.encode(self.totalCost, forKey: .totalCost)
+        try c.encode(self.missingCostEntries, forKey: .missingCostEntries)
+    }
 }
 
 struct GatewayCostUsageSummary: Codable {