Karabiner hjkl Setting for Phots.app

private.xml

<?xml version="1.0"?>
<root>
  <!-- define Photos -->
  <appdef>
    <appname>PHOTOS</appname>
    <equal>com.apple.Photos</equal>
  </appdef>

  <item>
    <name>Use "hjkl" keys as arrow keys if you are not editing text for Photos.</name>

    <item>
      <name>Enable in some standard apps.</name>
      <appendix>Supported Applications:</appendix>
      <appendix>- Photos.app.</appendix>
      <identifier>remap.hjkl_arrow_for_photos</identifier>

      {{ HJKL_ARROW_EXTRA }}

      <block>
        <only> PHOTOS </only>
        <uielementrole_not>AXTextField, AXTextArea</uielementrole_not>
        <modifier_only>
          ModifierFlag::NONE,
          ModifierFlag::SHIFT_L | ModifierFlag::NONE,
          ModifierFlag::SHIFT_R | ModifierFlag::NONE,
        </modifier_only>
        <autogen>__KeyToKey__ KeyCode::H, KeyCode::CURSOR_LEFT</autogen>
        <autogen>__KeyToKey__ KeyCode::J, KeyCode::CURSOR_DOWN</autogen>
        <autogen>__KeyToKey__ KeyCode::K, KeyCode::CURSOR_UP</autogen>
        <autogen>__KeyToKey__ KeyCode::L, KeyCode::CURSOR_RIGHT</autogen>
        <autogen>__KeyToKey__ KeyCode::KEY_1, KeyCode::KEY_1, ModifierFlag::COMMAND_L  </autogen>
        <autogen>__KeyToKey__ KeyCode::X, KeyCode::DELETE  </autogen>
        <autogen>__KeyToKey__ KeyCode::R, KeyCode::R, ModifierFlag::COMMAND_L  </autogen>
      </block>
    </item>
  </item>
</root>

hjkl +
1 => Open Photos Tab.
x => Delete with Confirmation.
r => Rotate to Right.