fix(io): prevent lossy Save As

Use the verified acadifc round-trip fixes and warn for every unsupported object or entity the selected format would drop.

Cargo.toml

@@ -91,7 +91,7 @@ windows-sys = { version = "0.61", features = ["Win32_UI_Shell", "Win32_UI_Window
 
 [patch.crates-io]
 # Track the verified DWG round-trip, I/O, and unified PERF fixes.
-acadrust = { git = "https://github.com/OpenAEC-Foundation/acadifc.git", rev = "bee1a58" }
+acadrust = { git = "https://github.com/OpenAEC-Foundation/acadifc.git", rev = "59e0224" }
 
 [target.'cfg(not(target_arch = "wasm32"))'.dependencies]
 # Native enables the plugin host runtime (out-of-process plugins).