macos: address remaining todos

macos/Sources/Features/Terminal/BaseTerminalController.swift

@@ -405,7 +405,7 @@ class BaseTerminalController: NSWindowController,
             // If splitting fails for any reason (it should not), then we just log
             // and return. The new view we created will be deinitialized and its
             // no big deal.
-            // TODO: log
+            Ghostty.logger.warning("failed to insert split: \(error)")
             return
         }
 
@@ -559,7 +559,7 @@ class BaseTerminalController: NSWindowController,
         do {
             surfaceTree = try surfaceTree.replace(node: node, with: resizedNode)
         } catch {
-            // TODO: log
+            Ghostty.logger.warning("failed to replace node during split resize: \(error)")
             return
         }
     }

macos/Sources/Features/Terminal/TerminalController.swift

@@ -152,7 +152,7 @@ class TerminalController: BaseTerminalController {
 
             // If we have no surfaces in our window (is that possible?) then we update
             // our window appearance based on the root config. If we have surfaces, we
-            // don't call this because the TODO
+            // don't call this because focused surface changes will trigger appearance updates.
             if surfaceTree.isEmpty {
                 syncAppearance(.init(config))
             }