pasting issue

Describe the bug

Bug: Pasted multi-line content not sent to model

Environment: WezTerm (Ctrl+V →  PasteFrom "Clipboard" ) on Windows, running Copilot CLI inside WSL (zsh). CLI version 1.0.80.

Expected: The full pasted content (12 lines) is sent to the model as part of the message.

Actual: The model responds as if no content was received — e.g., "I don't see the pasted content — it looks like it didn't come through." The paste token is not being expanded/substituted with the real content before the request is sent.

Notes: Terminal/paste mechanism itself works correctly (bracketed paste, WezTerm config verified clean) — this appears to be a CLI-side bug in how paste tokens are resolved before submission.

Affected version

GitHub Copilot CLI 1.0.80.

Steps to reproduce the behavior

Steps to reproduce:
in wezterm using wsl,

1. Copy multi-line text (e.g., 12 lines) to clipboard.
2. Prompt correctly shows a collapsed token:  [Paste #1 - 12 lines] .
3. Press Enter to submit.

Expected behavior

No response

Additional context

No response

在 Windows 上使用 WSL 内的 Copilot CLI 和 zsh，通过 WezTerm 复现，复制 12 行并提交折叠的 [Paste #1] token。由于未指定源文件或测试，因此从提交 prompt 到发出 model request，跟踪 paste-token 的处理过程。完成标准是提交的消息中包含完整的粘贴内容。