fix(terminal): restore CTRL+V paste on Windows and context menus

[WarheadTaylor]

What Changed

• Enable native Paste for terminals via context menu
• Support Ctrl+V on Windows

Why

CTRL+Shift+V worked on Windows, but it wasn't surfaced to the user that it was the expected input for pasting. This PR expands the different methods available.

Checklist

• This PR is small and focused
• I explained what changed and why

---

Note

Low Risk
Input/UX paste handling only; no auth, security, or data-path changes.

Overview
Makes terminal paste work via Ctrl+V on Windows and via the native/Electron context menu.

isTerminalPasteShortcut now accepts both Ctrl+V and Ctrl+Shift+V on Windows; Linux stays Ctrl+Shift+V-only and macOS stays Cmd+V.

On right-click, the hidden textarea is briefly moved under the cursor and focused so Paste targets the terminal input, then restored. The desktop Electron menu also enables Paste over canvas elements, since Electron treats the terminal canvas as non-editable.

^{Reviewed by Cursor Bugbot for commit 3dae294. Bugbot is set up for automated code reviews on this repo. Configure here.}

Note

Fix CTRL+V paste in the terminal on Windows and in context menus

• On Windows, isTerminalPasteShortcut in surface.ts now treats both Ctrl+V and Ctrl+Shift+V as paste shortcuts; Linux keeps only Ctrl+Shift+V; macOS keeps Cmd+V.
• When the context menu opens on the terminal canvas, the hidden textarea is temporarily repositioned under the cursor and focused so that the native/Electron "Paste" menu item correctly targets the terminal. Styles are restored on the next tick.
• The context-menu Paste item in DesktopWindow.ts is now enabled when params.mediaType is "canvas", not just when editFlags.canPaste is true.
• When terminal mouse reporting is active, context menu handling stops after preventDefault to avoid unintended textarea repositioning.

^{Macroscope summarized 3dae294.}

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[chatgpt-codex-connector]

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Reviewed commit: cf0073ef03

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[chatgpt-codex-connector]

Implement context-menu paste for browser clients

In the web and locally hosted browser clients, the native context menu remains associated with the canvas that received this contextmenu event; moving and focusing a textarea after dispatch does not change that event target or its non-editable menu state. Unlike desktop, where DesktopWindow.ts explicitly enables Electron's Paste role for canvases, these clients will therefore still show Paste as unavailable. Use a renderer-owned context-menu action or another clipboard path that does not depend on changing the hit-tested element after the event.

AGENTS.md reference: AGENTS.md:L67-L70

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[cursor]

Cursor Bugbot has reviewed your changes using high effort and found 1 potential issue.

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^{Reviewed by Cursor Bugbot for commit cf0073e. Configure here.}

[macroscopeapp]

Approvability

Verdict: Needs human review

This bug fix modifies runtime paste behavior and DOM manipulation for context menus. An open review comment raises a valid concern that the fix may only work for Electron/desktop, not browser clients - this incomplete coverage warrants human review to confirm the scope is intentional.

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