Add chip filters for the new time window filters

rename close => closure to ease interpretation by the LLM

test/models/command/ai/translator_test.rb

@@ -122,7 +122,7 @@ class Command::Ai::TranslatorTest < ActionDispatch::IntegrationTest
   end
 
   test "filter by time ranges" do
-    assert_command({context: {completion: "thisweek", indexed_by: "closed"}}, "cards completed this week")
+    assert_command({context: {closure: "thisweek", indexed_by: "closed"}}, "cards completed this week")
     assert_command({context: {creation: "thisweek", tag_ids: ["design"], creator_ids: [ "jz" ]}}, "cards created this week by jz tagged as #design")
   end