Feature: Implement initial macOS SimpleRemoter client

macos/Permissions.mm

@@ -0,0 +1,64 @@
+#import "Permissions.h"
+#import <Cocoa/Cocoa.h>
+#import <CoreGraphics/CoreGraphics.h>
+#import <ApplicationServices/ApplicationServices.h>
+
+bool Permissions::checkScreenCapture() {
+    // macOS 10.15+ requires screen recording permission
+    if (@available(macOS 10.15, *)) {
+        // Use CGPreflightScreenCaptureAccess for reliable permission check
+        // This API is available since macOS 10.15
+        return CGPreflightScreenCaptureAccess();
+    }
+
+    // Before 10.15, no permission needed
+    return true;
+}
+
+void Permissions::requestScreenCapture() {
+    if (@available(macOS 10.15, *)) {
+        // Trigger system permission dialog
+        CGRequestScreenCaptureAccess();
+    }
+}
+
+bool Permissions::checkAccessibility() {
+    return AXIsProcessTrusted();
+}
+
+void Permissions::requestAccessibility() {
+    NSDictionary *options = @{
+        (__bridge id)kAXTrustedCheckOptionPrompt: @YES
+    };
+    AXIsProcessTrustedWithOptions((__bridge CFDictionaryRef)options);
+}
+
+void Permissions::openScreenCaptureSettings() {
+    if (@available(macOS 10.15, *)) {
+        // Open System Preferences -> Security & Privacy -> Privacy -> Screen Recording
+        NSURL *url = [NSURL URLWithString:@"x-apple.systempreferences:com.apple.preference.security?Privacy_ScreenCapture"];
+        [[NSWorkspace sharedWorkspace] openURL:url];
+    }
+}
+
+void Permissions::openAccessibilitySettings() {
+    // Open System Preferences -> Security & Privacy -> Privacy -> Accessibility
+    NSURL *url = [NSURL URLWithString:@"x-apple.systempreferences:com.apple.preference.security?Privacy_Accessibility"];
+    [[NSWorkspace sharedWorkspace] openURL:url];
+}
+
+bool Permissions::checkAllPermissions() {
+    return checkScreenCapture() && checkAccessibility();
+}
+
+bool Permissions::waitForPermissions(int timeoutSeconds) {
+    int elapsed = 0;
+    while (elapsed < timeoutSeconds) {
+        if (checkAllPermissions()) {
+            return true;
+        }
+        [NSThread sleepForTimeInterval:1.0];
+        elapsed++;
+    }
+    return false;
+}