[UX] Improve clarity of "Copy command" button in Custom Commands (Prompts) UI

[somethingSTRANGE]

• Disable all other plugins besides Copilot (required)
• Log file generated via "Copilot: Create Log File" command or Settings -> Advanced -> Create Log File (required)
• Screenshot of note + Copilot chat pane + dev console added (optional)

Copilot version: 3.1.5
Model used: Claude 4.5 Opus (Anthropic API)

Describe how to reproduce

1. Open Obsidian Settings ➜ Copilot ➜ Command (tab)
2. Locate the list of custom prompts.
3. Observe the icon of two overlapping squares and the tooltip "Copy command".
4. Click the button.
5. Note that the file was duplicated.

Expected behavior

In my experience with developer tools, the overlapping squares icon is typically used for "Copy to Clipboard." When I clicked it, I was surprised that it created a new file. The current tooltip, "Copy command", is also a bit vague and reinforces that "copy to clipboard" expectation.

To make the "Clone/Duplicate" action clearer, you might consider:

• Icon: Using copy-plus from the Lucide set. That small "+" sign usually signals that something is being added or created.
• Tooltip: Updating the text to "Duplicate command" or "Clone command" to remove any ambiguity.

Screenshots

Additional context

One reason this might be confusing is that the same copy icon (the overlapping squares) is used in the main chat panel under every user prompt and agent response to copy text to the clipboard. In the chat, the tooltip correctly says "Copy."

In settings, buttons with that same icon instead create a brand new file in my vault. Using the same icon for two totally different things is not ideal.

[logancyang]

I agree, it should be duplicate or clone instead of "copy". cc @zeroliu