Tweak BuilderNet recipe defaults

[canercidam]

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[claude]

Claude finished @canercidam's task in 34s —— View job

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The change switches the default branch for the flashbots-images clone from main to fryd/mkosi-playground.

Potential concern:

Defaulting to a feature branch (fryd/mkosi-playground) rather than a stable branch like main is fragile — if that branch is deleted, renamed, or force-pushed, this script will break for anyone running it fresh. If this branch hasn't been merged to main yet, consider noting in the PR description or a code comment that this default should be reverted once the upstream branch is merged.

Additionally, the script has a pre-existing gap: if .flashbots-images already exists (cloned from a different branch), the clone is skipped entirely and the old branch content is used silently. This isn't introduced by this PR, but it becomes more relevant now that the default is a feature branch — users who previously ran the script against main won't pick up the branch change without manually deleting the directory.

No blocking issues — the change is correct for what it intends to do.

[claude]

Claude finished @canercidam's task in 46s —— View job

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Two commits change the default flashbots-images branch from main to fryd/mkosi-playground and update the README Quick Start to reference build.sh and drop --detached.

Feature branch as default (build.sh:10): Defaulting to fryd/mkosi-playground is fragile — if that branch is deleted, renamed, or force-pushed, build.sh will break for fresh users. Consider adding a comment noting this should be reverted once the upstream branch merges to main.

Stale clone not updated (build.sh:12-15): The clone is skipped when .flashbots-images already exists. Users who previously ran the script against main won't pick up the branch change without manually deleting the directory. This is pre-existing, but more impactful now that the default is a feature branch. Consider adding a branch check or at least a warning.

--detached removed from README (README.md:39): The Quick Start previously had --detached; now it doesn't. This changes user experience (foreground vs background). If intentional, fine — just noting it's a behavioral change included in what looks like a branch-default PR.

No blocking issues.

[claude]

Claude finished @canercidam's task in 59s —— View job

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Three commits: default branch change in build.sh, README Quick Start updates, and a small warning comment.

No new issues beyond what was flagged in prior reviews. The key concern remains the feature branch default (build.sh:10) — previous inline comment about adding a TODO stands. The README improvements are straightforward and reasonable.

One minor nit on the latest commit: the (ignore if you're reading the generated README) comment at line 29 assumes the reader knows what "generated README" means. Since builder-playground generate copies this file, it would be clearer as something like # (skip if you already ran 'generate').

No blocking issues.

[fkondej]

one comment, rest LGTM.

[fkondej]

The BuilderNet VM should be built according to flashbots-images instructions. Those might change.
I have added builder.sh as an example, and it shouldnt be used as part of regular workflow.