fix: refine tools (#1706)

* fix: refine tools

* fix: missing break line

* fix: view a in-context file

* fix: remove create_file tests

lua/avante/llm_tools/helpers.lua

@@ -61,4 +61,15 @@ function M.has_permission_to_access(abs_path)
   return not M.is_ignored(abs_path)
 end
 
+---@param path string
+---@return boolean
+function M.already_in_context(path)
+  local sidebar = require("avante").get()
+  if sidebar and sidebar.file_selector then
+    local rel_path = Utils.uniform_path(path)
+    return vim.tbl_contains(sidebar.file_selector.selected_filepaths, rel_path)
+  end
+  return false
+end
+
 return M