fix: execute command tool, improving prompts

lua/chatgpt_nvim/tools/execute_command.lua

@@ -1,17 +1,36 @@
 local M = {}
 
 M.run = function(tool_call, conf, prompt_user_tool_accept, is_subpath, read_file)
+  -- Validate the command exists
   local cmd = tool_call.command
   if not cmd then
     return "[executeCommand] Missing 'command'."
   end
-  local handle = io.popen(cmd)
+
+  -- Capture stderr and stdout together by redirecting stderr to stdout
+  -- This will help diagnose if there's an error causing no output
+  cmd = cmd .. " 2>&1"
+
+  -- Attempt to popen the command
+  local handle = io.popen(cmd, "r")
   if not handle then
     return string.format("Tool [executeCommand '%s'] FAILED to popen.", cmd)
   end
+
+  -- Read the full output (stdout + stderr)
   local result = handle:read("*a") or ""
-  handle:close()
-  return string.format("Tool [executeCommand '%s'] Result:\n%s", cmd, result)
+
+  -- Attempt to close, capturing exit info
+  local _, exit_reason, exit_code = handle:close()
+
+  -- Provide a richer summary including exit code and reason
+  return string.format(
+    "Tool [executeCommand '%s'] exited with code %s (%s)\n%s",
+    cmd,
+    tostring(exit_code),
+    tostring(exit_reason),
+    result
+  )
 end
 
 return M