add safe singleton factory to genesis

[dvush]

This is very useful because you can deploy all contact on the same address on all chains with this https://github.com/safe-fndn/safe-singleton-factory

[claude]

Claude finished @dvush's task in 53s —— View job

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PR Review

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• Analyze changes and provide review

Summary

The PR adds the Safe Singleton Factory (a deterministic CREATE2 deployer) to both L1 and L2 genesis allocations. The implementation is clean and straightforward — defines the canonical address and runtime bytecode as package-level vars and injects them in both genesis paths.

Issues

1. L1 ordering risk — On L1, the factory is injected before Optimism allocs are applied via maps.Copy (line 277). If OP allocs ever contain this address, the factory gets silently overwritten. Left an inline comment suggesting to move it after the OP allocs merge.

2. components.go change is noise — The only change in components.go is reordering the _ "embed" import (moving a blank line). This is cosmetic and unrelated to the feature. Consider dropping it from this PR to keep the diff focused.

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[claude]

The Safe Singleton Factory is added before Optimism L1 allocs are applied via maps.Copy (line 277). If the Optimism allocs ever include the same address (0x914d7Fec6aaC8cd542e72Bca78B30650d45643d7), maps.Copy will silently overwrite it. Consider moving this call after the Optimism allocs are applied, or at least after line 277, to ensure the factory is always present.

[canercidam]

@dvush WDYT?

[dvush]

Its better for users to add is via predeploy feature of the playground