[currentbits]

Opening Views → Browser creates an empty webview without a src. Electron never creates its guest, so the pane never calls preview.bind and the MCP preview tool reports the open pane as closed. Both manual and automatic navigation depend on that missing binding.

Initialize the guest at about:blank. The existing empty state remains visible until a local URL loads, and the existing partition and navigation policy still apply.

The PR also uses the existing asynchronous rmTree helper in three Grok runner fixtures whose synchronous cleanup failed with Windows EBUSY. Environment variables are restored before awaiting removal. All pipe-close assertions remain enabled; production process handling is unchanged.

Validation:

• An isolated Electron 35.7.5 probe reproduced the missing guest without src and received did-attach with a valid guest ID after setting about:blank.
• The renderer regression failed before this change and passed afterward; all 12 focused renderer/host preview checks pass.
• All 43 focused Grok checks pass with an isolated guardrails setting.
• All six hosted macOS, Linux, and Windows source/smoke checks pass at 2974079: https://github.com/currentbits/solenta/actions/runs/36432136342. The Windows log confirms all three repaired Grok fixtures and the descendant-stdio assertion pass.

The input-card visual verification tracked in #1369 remains open until the repaired Browser pane is available in the running app.

[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-09-28T13:26:44.332416Z	06fbf41	Draft marked ready

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