feat: add Pool column to browsers list

[masnwilliams]

Summary

• Add a "Pool" column to kernel browsers list table output showing the pool ID for browsers acquired from a pool (or "-" for regular browsers)
• Uses SDK ExtraFields to extract pool_id until the Go SDK is regenerated with the new field

Depends on kernel/kernel#1286 for the API to return pool_id.

Test plan

• kernel browsers list with pooled browsers shows pool ID in Pool column
• kernel browsers list with regular browsers shows "-" in Pool column
• kernel browsers list --output json includes pool_id for pooled browsers

Made with Cursor

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Note

Medium Risk
UI output change is low impact, but the go.mod replace redirects a core SDK dependency to a forked commit, which can affect API compatibility and downstream builds.

Overview
Adds a new "Pool" column to kernel browsers list table output, populated from browser.PoolID and shown as - when absent.

Pins the Kernel Go SDK to a fork via a go.mod replace (with corresponding go.sum updates) to pick up the PoolID field before the upstream SDK is regenerated.

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Development SDK replace directive committed to production

High Severity

The replace directive in go.mod points to a pre-release SDK from the private stainless-sdks/kernel-go repository. The project's own DEVELOPMENT.md documents go-mod-replace-kernel.sh as a development-time workflow for testing against unreleased API changes. This replace directive is a temporary development aid that pins the build to an unstable, pre-release commit and isn't suitable for merging to main or releasing.

 

[kernel-internal]

🔧 CI Fix Available

I've pushed a fix for the CI failure. The issue was that the replace directive in go.mod pointed to a private repository (github.com/stainless-sdks/kernel-go) that CI cannot access.

The fix uses the SDK's ExtraFields mechanism to extract pool_id from the API response, which works with the public SDK (github.com/kernel/[email protected]).

👉 Click here to create a PR with the fix

[Sayan-]

changes lgtm - one suggestion. once we publish the new sdk please re-request review and we'll 🚢

[Sayan-]

should default to pool name over id if available!