Reorganize codebase into modular structure

src/platform/mod.rs

@@ -0,0 +1,33 @@
+// Platform-specific cursor handling
+
+// Windows implementation
+#[cfg(windows)]
+mod windows;
+
+// macOS implementation
+#[cfg(target_os = "macos")]
+mod macos;
+
+// Linux implementation
+#[cfg(target_os = "linux")]
+mod linux;
+
+// Unsupported platforms
+#[cfg(not(any(windows, target_os = "macos", target_os = "linux")))]
+mod unsupported;
+
+// --- Public Exports ---
+
+// Export the platform-specific functions
+#[cfg(windows)]
+pub use windows::{hide_system_cursor, update_cursor_image, restore_cursor};
+
+#[cfg(target_os = "macos")]
+pub use macos::{hide_system_cursor, update_cursor_image, restore_cursor, render_cursor};
+
+#[cfg(target_os = "linux")]
+pub use linux::{hide_system_cursor, update_cursor_image, restore_cursor, render_cursor};
+
+// Default implementation for other platforms
+#[cfg(not(any(windows, target_os = "macos", target_os = "linux")))]
+pub use unsupported::{hide_system_cursor, update_cursor_image, restore_cursor, render_cursor};