fix(web): support Ctrl+V terminal paste on Windows

[alguiraud]

What Changed

Added Windows-specific terminal paste handling so Ctrl+V triggers clipboard paste.

Why

(This may have been on purpose for Windows so feel free to disregard)

When using WSL from Windows Terminal, Ctrl+V is handled by the Windows terminal as paste before the key reaches Linux. T3’s Windows client should provide the same behavior to avoid friction.

Previously, Windows fell into the generic non-macOS path, so Ctrl+V was forwarded to the WSL PTY as control-V and appeared as ^V.

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
Small, well-tested shortcut mapping change with no auth or data-handling impact. Linux still keeps Ctrl+V for the PTY.

Overview
Treats Ctrl+V as clipboard paste on Windows in isTerminalPasteShortcut, instead of the previous non-mac path that required Ctrl+Shift+V and forwarded Ctrl+V as ^V.

macOS stays Cmd+V; Linux still uses Ctrl+Shift+V so Ctrl+V can reach the PTY. Adds a Windows unit test.

^{Reviewed by Cursor Bugbot for commit 9a8962d. Bugbot is set up for automated code reviews on this repo. Configure here.}

Note

Support Ctrl+V terminal paste on Windows in isTerminalPasteShortcut

• Updates the v key branch of isTerminalPasteShortcut in surface.ts to return true for Ctrl+V on Windows.
• macOS keeps Cmd+V, and other non-mac platforms keep Ctrl+Shift+V.
• Adds a test case in surface.test.ts confirming Windows uses Ctrl+V (not Cmd+V).
• Risk: Windows users who relied on Ctrl+Shift+V now trigger paste with plain Ctrl+V via isTerminalPasteShortcut, which may conflict with existing Ctrl+V bindings in the terminal surface.

^{Macroscope summarized 9a8962d.}

[macroscopeapp]

Approvability

Verdict: Approved at 9a8962d

Macroscope's review found this PR approvable — Straightforward bug fix that adds Windows-specific handling for Ctrl+V paste in the terminal, matching expected OS behavior. The change is small, well-scoped, and includes a unit test.

^{You can add or adjust custom eligibility rules. Learn more.}

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