feat: mac node exec policy + remote skills hot reload

apps/macos/Sources/Clawdbot/NodeMode/MacNodeRuntimeMainActorServices.swift

@@ -1,7 +1,14 @@
+import AppKit
 import ClawdbotKit
 import CoreLocation
 import Foundation
 
+enum SystemRunDecision: Sendable {
+    case allowOnce
+    case allowAlways
+    case deny
+}
+
 @MainActor
 protocol MacNodeRuntimeMainActorServices: Sendable {
     func recordScreen(
@@ -17,6 +24,8 @@ protocol MacNodeRuntimeMainActorServices: Sendable {
         desiredAccuracy: ClawdbotLocationAccuracy,
         maxAgeMs: Int?,
         timeoutMs: Int?) async throws -> CLLocation
+
+    func confirmSystemRun(command: String, cwd: String?) async -> SystemRunDecision
 }
 
 @MainActor
@@ -57,4 +66,31 @@ final class LiveMacNodeRuntimeMainActorServices: MacNodeRuntimeMainActorServices
             maxAgeMs: maxAgeMs,
             timeoutMs: timeoutMs)
     }
+
+    func confirmSystemRun(command: String, cwd: String?) async -> SystemRunDecision {
+        let alert = NSAlert()
+        alert.alertStyle = .warning
+        alert.messageText = "Allow this command?"
+
+        var details = "Clawdbot wants to run:\n\n\(command)"
+        let trimmedCwd = cwd?.trimmingCharacters(in: .whitespacesAndNewlines) ?? ""
+        if !trimmedCwd.isEmpty {
+            details += "\n\nWorking directory:\n\(trimmedCwd)"
+        }
+        details += "\n\nThis runs on this Mac via node mode."
+        alert.informativeText = details
+
+        alert.addButton(withTitle: "Allow Once")
+        alert.addButton(withTitle: "Always Allow")
+        alert.addButton(withTitle: "Don't Allow")
+
+        switch alert.runModal() {
+        case .alertFirstButtonReturn:
+            return .allowOnce
+        case .alertSecondButtonReturn:
+            return .allowAlways
+        default:
+            return .deny
+        }
+    }
 }