Cmd+K in cloud agent conversation triggers terminal-like behavior ("Starting ..." shown, Cmd+Enter broken)

[warp-dev-github-integration]

Bug Description

Pressing Cmd+K while in a cloud agent conversation causes unexpected terminal-like behavior to appear. The UI enters a broken state where:

1. A "Starting ...." message appears at the bottom of the screen (the terminal session initialization indicator)
2. Cmd+Enter stops working
3. Other general UI oddities occur

Steps to Reproduce

1. Open a cloud agent conversation (e.g., via "New session" in a Warp Dev Environment)
2. Press Cmd+K
3. Observe the "Starting ...." text appearing at the bottom and broken keyboard shortcuts

Expected Behavior

Cmd+K should either be a no-op in cloud agent conversations, or trigger the appropriate command palette / action for that context. It should not trigger terminal session initialization.

Actual Behavior

The UI enters a partially broken state showing terminal startup indicators ("Starting ....") in a context where no terminal should be starting. Cmd+Enter and possibly other shortcuts stop functioning correctly.

Internal Slack thread: https://warpdev.slack.com/archives/C08KTPNQN65/p1780604714791659