Add terminal selection copy action

[tarik02]

What Changed

Added "Copy" action to terminal context menu that's shown right after selection.

Why

Currently, copying from terminal requires too many actions:

1. Select region.
2. Dismiss context menu (disgusting).
3. Copy with separate context menu click/ctrl+c/command+c/whatever.

UI Changes

Before:

After:

Checklist

• This PR is small and focused
• I explained what changed and why
• I included before/after screenshots for any UI changes
• I included a video for animation/interaction changes

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Note

Low Risk
Single-file UI change in terminal selection handling; reuses existing clipboard helper with localized error handling and no auth or data-model changes.

Overview
Extends the post-selection terminal context menu so users can Copy without dismissing the menu and using a separate shortcut.

The menu now shows Add to chat and Copy via exported TERMINAL_SELECTION_ACTION_MENU_ITEMS. Choosing Copy writes the raw xterm selection through writeTextToClipboard; failures surface as a [terminal] system message. Add to chat behavior is unchanged (normalized text, clear selection). Dismissing the menu (null) is treated as a no-op instead of being conflated with a choice.

^{Reviewed by Cursor Bugbot for commit 0bf347c. Bugbot is set up for automated code reviews on this repo. Configure here.}

Note

Add 'Copy' action to terminal selection context menu

• Adds a copy option alongside the existing add-to-chat item in the terminal selection context menu in ThreadTerminalDrawer.tsx.
• The copy action writes raw selection text to the clipboard via writeTextToClipboard; on failure, prints an error message directly to the terminal.
• Renames selectionActionOpenRef to selectionActionMenuOpenRef to track menu open state and prevent re-entry while the menu is visible.

^{Macroscope summarized 0bf347c.}

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[macroscopeapp]

Approvability

Verdict: Approved

Adds a standard 'Copy' action to the terminal selection context menu using existing clipboard utilities. Self-contained UI enhancement with proper error handling and no runtime behavior changes beyond the new menu option.

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[0rdep]

please disregard my previous approval. It was intended for my fork, and I am not a member of the pingdotgg/t3code team.

Dismissing prior approval to re-evaluate 7ebecc8

Dismissing prior approval to re-evaluate 948a0cd

Dismissing prior approval to re-evaluate 820e554

[cursor]

Cursor Bugbot has reviewed your changes using high effort and found 3 potential issues.

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^{Reviewed by Cursor Bugbot for commit 820e554. Configure here.}