fix(cli): restore Cmd+V image paste in VSCode terminal

[Drilmo]

Summary

Fixes Cmd+V image paste regression in VSCode terminal that was introduced in #4916.

The Problem

When pasting images with Cmd+V in VSCode terminal:

• VSCode sends empty bracketed paste sequences (\x1b[200~\x1b[201~) unlike regular terminals
• feat(cli): abbreviate large pasted text and optimize paste performance #4916 changed the condition to if (wasPasting && currentBuffer), which skips empty pastes
• This broke the original feat(cli): support Cmd+V for image paste in VSCode terminal #4832 behavior that checked clipboard for images on empty pastes

The Fix

• Restore clipboard image check when receiving empty bracketed pastes
• Keep the optimization from feat(cli): abbreviate large pasted text and optimize paste performance #4916 for regular text pastes (no clipboard check)
• Preserves the multiline paste fix from fix(cli): restore paste buffer cleanup to prevent multiline paste regression #5011

Test Plan

• Copy an image to clipboard (e.g., screenshot or image file from Finder)
• In VSCode terminal running Kilo CLI, press Cmd+V
• Image should be pasted as a reference
• Regular text paste (Ctrl+V / Cmd+V with text) still works
• Multiline paste still works correctly

[changeset-bot]

🦋 Changeset detected

Latest commit: 493aaf4

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@kilocode/cli	Patch

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[marius-kilocode]

Thanks @Drilmo!