feat(combobox): use single chevron-down icon in ComboboxTrigger (#475)

* feat(combobox): use single chevron-down icon in ComboboxTrigger

Aligns ComboboxTrigger with the base shadcn Combobox, which uses a single
chevron-down affordance. ComboboxInputTrigger already renders chevron-down;
this makes the default trigger consistent.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

* chore(mcp): rebuild registry.json for ComboboxTrigger chevron-down

---------

Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>

Author: pierry01

gem/lib/ruby_ui/combobox/combobox_trigger.rb

@@ -52,10 +52,7 @@ def icon
         stroke_linejoin: "round"
       ) do |s|
         s.path(
-          d: "m7 15 5 5 5-5"
-        )
-        s.path(
-          d: "m7 9 5-5 5 5"
+          d: "m6 9 6 6 6-6"
         )
       end
     end

gem/test/ruby_ui/combobox_test.rb

@@ -187,8 +187,7 @@ def test_combobox_badge_trigger_no_chevron
 
   def test_combobox_trigger_chevron_down
     output = phlex { RubyUI.ComboboxTrigger(placeholder: "Pick") }
-    assert_match(/m7 15 5 5 5-5/, output)
-    assert_match(/m7 9 5-5 5 5/, output)
+    assert_match(/m6 9 6 6 6-6/, output)
   end
 
   def test_combobox_trigger_sets_placeholder_data

mcp/data/registry.json

@@ -987,7 +987,7 @@
         },
         {
           "path": "combobox_trigger.rb",
-          "content": "# frozen_string_literal: true\n\nmodule RubyUI\n  class ComboboxTrigger < Base\n    def initialize(placeholder: \"\", **)\n      @placeholder = placeholder\n      super(**)\n    end\n\n    def view_template\n      button(**attrs) do\n        span(class: \"truncate\", data: {ruby_ui__combobox_target: \"triggerContent\"}) do\n          @placeholder\n        end\n        icon\n      end\n    end\n\n    private\n\n    def default_attrs\n      {\n        type: \"button\",\n        class: [\n          \"flex h-full w-full items-center whitespace-nowrap rounded-md text-sm ring-offset-background transition-colors border border-input bg-background h-9 px-4 py-2 justify-between\",\n          \"hover:bg-accent hover:text-accent-foreground\",\n          \"disabled:pointer-events-none disabled:opacity-50\",\n          \"aria-disabled:pointer-events-none aria-disabled:opacity-50 aria-disabled:cursor-not-allowed\",\n          \"focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2\"\n        ],\n        data: {\n          placeholder: @placeholder,\n          ruby_ui__combobox_target: \"trigger\",\n          action: \"ruby-ui--combobox#togglePopover\"\n        },\n        aria: {\n          haspopup: \"listbox\",\n          expanded: \"false\"\n        }\n      }\n    end\n\n    def icon\n      svg(\n        xmlns: \"http://www.w3.org/2000/svg\",\n        viewbox: \"0 0 24 24\",\n        fill: \"none\",\n        stroke: \"currentColor\",\n        class: \"ml-2 h-4 w-4 shrink-0 opacity-50\",\n        stroke_width: \"2\",\n        stroke_linecap: \"round\",\n        stroke_linejoin: \"round\"\n      ) do |s|\n        s.path(\n          d: \"m7 15 5 5 5-5\"\n        )\n        s.path(\n          d: \"m7 9 5-5 5 5\"\n        )\n      end\n    end\n  end\nend\n"
+          "content": "# frozen_string_literal: true\n\nmodule RubyUI\n  class ComboboxTrigger < Base\n    def initialize(placeholder: \"\", **)\n      @placeholder = placeholder\n      super(**)\n    end\n\n    def view_template\n      button(**attrs) do\n        span(class: \"truncate\", data: {ruby_ui__combobox_target: \"triggerContent\"}) do\n          @placeholder\n        end\n        icon\n      end\n    end\n\n    private\n\n    def default_attrs\n      {\n        type: \"button\",\n        class: [\n          \"flex h-full w-full items-center whitespace-nowrap rounded-md text-sm ring-offset-background transition-colors border border-input bg-background h-9 px-4 py-2 justify-between\",\n          \"hover:bg-accent hover:text-accent-foreground\",\n          \"disabled:pointer-events-none disabled:opacity-50\",\n          \"aria-disabled:pointer-events-none aria-disabled:opacity-50 aria-disabled:cursor-not-allowed\",\n          \"focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2\"\n        ],\n        data: {\n          placeholder: @placeholder,\n          ruby_ui__combobox_target: \"trigger\",\n          action: \"ruby-ui--combobox#togglePopover\"\n        },\n        aria: {\n          haspopup: \"listbox\",\n          expanded: \"false\"\n        }\n      }\n    end\n\n    def icon\n      svg(\n        xmlns: \"http://www.w3.org/2000/svg\",\n        viewbox: \"0 0 24 24\",\n        fill: \"none\",\n        stroke: \"currentColor\",\n        class: \"ml-2 h-4 w-4 shrink-0 opacity-50\",\n        stroke_width: \"2\",\n        stroke_linecap: \"round\",\n        stroke_linejoin: \"round\"\n      ) do |s|\n        s.path(\n          d: \"m6 9 6 6 6-6\"\n        )\n      end\n    end\n  end\nend\n"
         }
       ],
       "dependencies": {