VS Code: open a Kimi tab beside the active editor

What feature would you like to see?

Add a VS Code command, kimi.openInTabBeside, that opens a new Kimi Code editor panel beside the active editor group.

The extension already supports the Activity Bar sidebar and kimi.openInTab, but the existing tab command always targets ViewColumn.One. Users who keep AI conversations in a dedicated adjacent editor group currently have to move each new Kimi panel manually or rely on workspace-specific helper extensions.

The proposed command would call the existing panel creation path with vscode.ViewColumn.Beside. The current kimi.openInTab and kimi.openInSideBar behavior would remain unchanged.

Additional information

A focused implementation is ready locally for discussion. It:

• adds only the new command and Command Palette entry;
• makes createPanel accept an optional view column while preserving ViewColumn.One as its default;
• uses the native ViewColumn.Beside placement instead of moving tabs or manipulating editor groups;
• includes provider unit tests, an Extension Host smoke check, and a kimi-code changeset;
• contains no workspace paths, Claude integration, startup restoration, or machine-specific heuristics.

Local validation passed for the new tests, VS Code extension typecheck/build, lint, VSIX packaging, and a real Extension Host smoke run. I would like maintainer feedback on the command name and whether this placement option fits the extension roadmap before opening a PR, as required by CONTRIBUTING.md.

Start by locating the existing kimi.openInTab and kimi.openInSideBar commands and the createPanel path in the TypeScript extension code. Add the kimi.openInTabBeside command using the existing provider tests and Extension Host smoke check as guides, then run the listed typecheck, build, lint, packaging, and smoke validations; done also requires a kimi-code changeset and maintainer agreement on the command name.