Clean up failed cloud computer provisioning

[milind-soni]

Summary

• fail immediately when a new cloud computer cannot be named
• treat readiness, bootstrap, and desktop-link failures as provisioning failures
• permanently remove only the machine created by the failing attempt
• preserve pre-existing machines on every later failure path
• surface a manual cleanup warning and exact box ID if automatic deletion itself fails

The cleanup request follows the provider's current permanent-delete contract, including the exact-ID confirmation header.

Verification

• pnpm test (452 passed, 8 skipped; updater tests 11 passed)
• pnpm build
• provider-contract tests cover cleanup after a failed rename and non-cleanup of an existing machine

Merge order

This is stacked on #154. Merge #151, #153, #154, then this PR.

[coderabbitai]

Warning

Review limit reached

@milind-soni, you've reached your PR review limit, so we couldn't start this review.

Next review available in: 39 minutes

Limit details: You’ve used all 3 included reviews currently available under your plan.

Enable usage-based reviews in Billing to review now. Otherwise, wait until the next included review is available.
You're only billed for reviews past your plan's rate limits ($0.25/file).

How can I continue?

After more reviews become available, a review can be triggered using the @coderabbitai review command as a PR comment. Alternatively, push new commits to this PR.

To avoid repeated limits, reduce automatic review volume by pausing incremental auto-reviews earlier, using label-based review opt-in, excluding WIP or generated PR titles, or requesting reviews manually when the PR is ready. If your team needs uninterrupted high-volume reviews, an organization admin can enable usage-based reviews.

How do review limits work?

CodeRabbit enforces per-developer PR review limits for each organization. Most developers receive the normal plan review availability.

For paid Pro and Pro+ PR reviews, CodeRabbit uses adaptive limits for sustained high-volume activity. When a developer's recent PR review activity reaches the 95th percentile or higher among CodeRabbit users, additional reviews become available more gradually as earlier reviews age out of the rolling window.

Please refer docs for additional details.

Review details

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: e4094c80-383c-444d-b5a2-5a79bc2a8b14

📥 Commits

Reviewing files that changed from the base of the PR and between 2e87128 and 38cda20.

📒 Files selected for processing (2)

• server/box-provision.test.ts
• server/box.ts

---

_{Comment @coderabbitai help to get the list of available commands.}