fix(stream): ask before adding replication regions on library create

[jamie-at-bunny]

Related to what was discussed in BunnyWay/documentation#503 (comment)

[bunnynet-devops]

@codex review

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Latest commit: fe7fa70

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[chatgpt-codex-connector]

Codex Review Summary

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Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-10-19T11:56:14.214167Z	e0a4ac2	Manual request

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[chatgpt-codex-connector]

💡 Codex Review

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Reviewed commit: e0a4ac26a7

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