fix(patch): cherry-pick ba15eeb to release/v0.16.0-preview.0-pr-13083 to patch version v0.16.0-preview.0 and create version 0.16.0-preview.1

[gemini-cli-robot]

This PR automatically cherry-picks commit ba15eeb to patch version v0.16.0-preview.0 in the preview release to create version 0.16.0-preview.1.

[gemini-code-assist]

Summary of Changes

Hello @gemini-cli-robot, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request is an automated cherry-pick to patch a preview release, focusing on enhancing the interactive experience within the CLI. It introduces improved feedback for mouse-based text selection, clarifies keyboard shortcuts in the help documentation, and refines internal event handling logic for mouse and scroll events. A key safety improvement prevents console.clear() from being invoked when an alternate buffer is active, ensuring a more stable user interface.

Highlights

• Mouse Event Handling Refinement: Introduced a mechanism to detect unhandled mouse drag events and emit a SelectionWarning to inform users about text selection behavior in the terminal.
• User Interface Feedback: Added a temporary warning message in the Composer component to guide users to use Ctrl-S for text selection when an unhandled mouse drag occurs.
• Help Documentation Update: Updated the help menu to include Ctrl+S for entering selection mode and Page Up/Down for scrolling, improving discoverability of these features.
• Scroll Event Handling: Modified scroll event handlers in ScrollProvider to explicitly return true when an event is handled and false otherwise, allowing for better event propagation control.
• Console Clear Safety: Ensured that console.clear() is only called when the alternate buffer is not active, preventing unintended screen clearing in certain UI contexts.

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[gemini-code-assist]

Code Review

This pull request is a cherry-pick that introduces a helpful "selection warning" to guide users on how to copy text when mouse mode is enabled, which is a great UX improvement. It also includes a critical fix to prevent console.clear() from being called in alternate buffer mode, which avoids terminal corruption. The implementation is solid, with a well-thought-out refactoring of the mouse event handling system to support the new warning, and the changes are thoroughly tested. The code quality is high, and I did not find any issues of high or critical severity.

[github-actions]

Size Change: +2.08 kB (+0.01%)

Total Size: 20.5 MB

Filename	Size	Change
./bundle/gemini.js	20.5 MB	+2.08 kB (+0.01%)

ℹ️ View Unchanged

Filename	Size
./bundle/sandbox-macos-permissive-closed.sb	1.03 kB
./bundle/sandbox-macos-permissive-open.sb	890 B
./bundle/sandbox-macos-permissive-proxied.sb	1.31 kB
./bundle/sandbox-macos-restrictive-closed.sb	3.29 kB
./bundle/sandbox-macos-restrictive-open.sb	3.36 kB
./bundle/sandbox-macos-restrictive-proxied.sb	3.56 kB

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