fix: reduce maximum tool use response size to 400,000 (#243)

Author: brandonskiser

crates/chat-cli/src/cli/chat/consts.rs

@@ -8,10 +8,10 @@ pub const MAX_CURRENT_WORKING_DIRECTORY_LEN: usize = 256;
 pub const MAX_CONVERSATION_STATE_HISTORY_LEN: usize = 250;
 
 /// Actual service limit is 800_000
-pub const MAX_TOOL_RESPONSE_SIZE: usize = 600_000;
+pub const MAX_TOOL_RESPONSE_SIZE: usize = 400_000;
 
 /// Actual service limit is 600_000
-pub const MAX_USER_MESSAGE_SIZE: usize = 600_000;
+pub const MAX_USER_MESSAGE_SIZE: usize = 400_000;
 
 /// In tokens
 pub const CONTEXT_WINDOW_SIZE: usize = 200_000;