fix(style): replace Map.get with dot access and pattern matching where keys are guaranteed (CSM-032)

lib/bds/desktop/shell_live/import_editor/analysis_state.ex

@@ -266,7 +266,7 @@ defmodule BDS.Desktop.ShellLive.ImportEditor.AnalysisState do
   @spec default_author(term()) :: term()
   def default_author(project_id) do
     {:ok, metadata} = Metadata.get_project_metadata(project_id)
-    Map.get(metadata, :default_author)
+    metadata.default_author
   end
 
   @spec suggested_definition_name(term()) :: term()

lib/bds/desktop/shell_live/import_editor/taxonomy_editing.ex

@@ -222,7 +222,7 @@ defmodule BDS.Desktop.ShellLive.ImportEditor.TaxonomyEditing do
     {:ok, metadata} = Metadata.get_project_metadata(project_id)
 
     %{
-      categories: Enum.uniq(Map.get(metadata, :categories, []) || []),
+      categories: Enum.uniq(metadata.categories || []),
       tags: project_id |> Tags.list_tags() |> Enum.map(& &1.name) |> Enum.uniq()
     }
   end