⚡ Bolt: [performance improvement] Eliminate eager array allocations in UI and Memory modules

Sources/Cacheout/Memory/RecommendationEngine.swift

@@ -205,10 +205,9 @@ struct RecommendationEngine {
         }
 
         // rosetta_detected
-        let rosettaProcesses = scanResult.processes.filter {
-            $0.isRosetta && $0.physFootprint >= Self.rosettaMinFootprint
-        }
-        for proc in rosettaProcesses {
+        // ⚡ Bolt Optimization: Using a `where` clause on the `for` loop instead of an eager `.filter`
+        // prevents the allocation of an intermediate array, saving memory churn when scanning hundreds of processes.
+        for proc in scanResult.processes where proc.isRosetta && proc.physFootprint >= Self.rosettaMinFootprint {
             let footprintGB = Double(proc.physFootprint) / (1024 * 1024 * 1024)
             recommendations.append(Recommendation(
                 type: .rosettaDetected,
@@ -223,8 +222,9 @@ struct RecommendationEngine {
         }
 
         // agent_memory_pressure
-        let agents = AgentDetector.agentProcesses(from: scanResult.processes)
-        for agent in agents where agent.physFootprint >= Self.agentMinFootprint {
+        // ⚡ Bolt Optimization: Checking `isAgent` in the `where` clause rather than running an eager `.filter`
+        // prevents an intermediate array allocation.
+        for agent in scanResult.processes where AgentDetector.isAgent(agent) && agent.physFootprint >= Self.agentMinFootprint {
             let footprintGB = Double(agent.physFootprint) / (1024 * 1024 * 1024)
             recommendations.append(Recommendation(
                 type: .agentMemoryPressure,

Sources/Cacheout/Views/CleanConfirmation.swift

@@ -36,7 +36,8 @@ struct CleanConfirmationSheet: View {
             Text("Clean Selected Caches?")
                 .font(.title2.bold())
 
-            Text("This will remove \(viewModel.formattedTotalSelectedSize) from \(viewModel.selectedResults.count + viewModel.nodeModulesItems.filter(\.isSelected).count) items.")
+            // ⚡ Bolt Optimization: Using `.lazy.filter` prevents an intermediate array allocation here.
+            Text("This will remove \(viewModel.formattedTotalSelectedSize) from \(viewModel.selectedResults.count + viewModel.nodeModulesItems.lazy.filter(\.isSelected).count) items.")
                 .font(.body)
                 .foregroundStyle(.secondary)
                 .multilineTextAlignment(.center)

Sources/Cacheout/Views/MenuBarView.swift

@@ -154,7 +154,8 @@ struct MenuBarView: View {
             Spacer()
             statPill(
                 label: "Categories",
-                value: "\(viewModel.scanResults.filter { !$0.isEmpty }.count)",
+                // ⚡ Bolt Optimization: Using `.lazy.filter` before `.count` prevents Swift from allocating an intermediate array.
+                value: "\(viewModel.scanResults.lazy.filter { !$0.isEmpty }.count)",
                 color: .blue
             )
         }
@@ -177,7 +178,10 @@ struct MenuBarView: View {
     // MARK: - Top Categories
 
     private var topCategories: some View {
+        // ⚡ Bolt Optimization: Chaining `.lazy.filter` before `.sorted` avoids allocating an intermediate array
+        // during SwiftUI render passes, reducing unnecessary heap allocations.
         let top = viewModel.scanResults
+            .lazy
             .filter { !$0.isEmpty }
             .sorted { $0.sizeBytes > $1.sizeBytes }
             .prefix(5)