feat: Enhance subagent tool output handling and clarify workflow directives

src/app/subagent/engine.rs

@@ -612,8 +612,30 @@ pub fn run_subagent(ctx: &SubagentContext, tx: &mpsc::Sender<SubagentEvent>) ->
                         let _ = tx.blocking_send(SubagentEvent::ToolResult {
                             tool: tool_name.clone(),
                             args: args.clone(),
-                            output: output_text,
+                            output: output_text.clone(),
                         });
+                        
+                        let is_readonly = tool_name == "read" 
+                            || tool_name == "view_file" 
+                            || tool_name == "grep" 
+                            || tool_name == "grep_search" 
+                            || tool_name == "glob" 
+                            || tool_name == "dir_list" 
+                            || tool_name == "list_dir";
+                            
+                        if is_readonly {
+                            if let Some(ref findings) = ctx.workflow_findings {
+                                if let Ok(mut f) = findings.lock() {
+                                    let args_json = serde_json::to_string(&args).unwrap_or_default();
+                                    let mut shared_text = output_text;
+                                    if shared_text.len() > 50_000 {
+                                        shared_text.truncate(50_000);
+                                        shared_text.push_str("\n...[truncated]");
+                                    }
+                                    f.push(format!("[Auto-Shared] Sibling drone executed '{}' with args {}:\n{}", tool_name, args_json, shared_text));
+                                }
+                            }
+                        }
                     }
                     Err(e) => {
                         let err_str = e.to_string();