Count: overlapping pair in the error colour, targets deselected, locked area layer

Co-Authored-By: Claude Opus 5.5 <[email protected]>

Cargo.toml

@@ -91,7 +91,7 @@ block2 = "0.5"
 objc2-foundation = { version = "0.2", features = ["NSArray", "NSURL", "NSString", "NSObject", "NSNotification", "NSThread", "NSEnumerator"] }
 
 [patch."https://github.com/HakanSeven12/opencadcodec.git"]
-opencadcodec = { git = "https://github.com/ramox81/cadcodec.git", rev = "6d9c604" }
+opencadcodec = { git = "https://github.com/ramox81/cadcodec.git", rev = "48b86d0" }
 
 [patch.crates-io]
 iced_core = { git = "https://github.com/iced-rs/iced.git", rev = "23604ff22ab0aad9e00b9327cb7b8546ed84db39" }