fix: scope objc2 to iOS builds

Only compile objc2 on iOS so Linux and Windows release builds stop pulling in an Apple-only crate and the cross-platform desktop release workflow can complete.

Made-with: Cursor

Author: BunsDev

src-tauri/Cargo.toml

@@ -27,9 +27,12 @@ base64 = "0.22.1"
 tauri-plugin-dialog = "2.6.0"
 tauri-plugin-clipboard-manager = "2.3.2"
 tauri-plugin-localhost = "2"
-objc2 = "0.6.4"
 tauri-plugin-http = "2.5.7"
 
+# iOS-only dependencies
+[target.'cfg(target_os = "ios")'.dependencies]
+objc2 = "0.6.4"
+
 # Desktop-only dependencies
 [target.'cfg(not(target_os = "ios"))'.dependencies]
 portable-pty = "0.8"