H-6251: Reduce user auth session to 1 month

[CiaranMn]

🌟 What is the purpose of this PR?

Reduces Kratos session timeout length to 1 month.

[vercel]

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Project	Deployment	Actions	Updated (UTC)
hash	Ready	Preview, Comment	Feb 20, 2026 6:35pm

3 Skipped Deployments

Project	Deployment	Actions	Updated (UTC)
hashdotdesign	Ignored		Feb 20, 2026 6:35pm
hashdotdesign-tokens	Ignored		Feb 20, 2026 6:35pm
petrinaut	Skipped		Feb 20, 2026 6:35pm

[cursor]

PR Summary

Medium Risk
Changes authentication session duration, which can impact user experience (more frequent logins) and any clients assuming long-lived sessions.

Overview
Reduces Ory Kratos authentication session lifetime by changing session.lifespan in apps/hash-external-services/kratos/kratos.yml from ~3 years (26280h) to 1 month (720h).

^{Written by Cursor Bugbot for commit a01c6bb. This will update automatically on new commits. Configure here.}

[augmentcode]

🤖 Augment PR Summary

Summary: Reduces Ory Kratos session lifespan from ~3 years to 720h (~30 days).
Why: Shortens user authentication session duration to a ~1-month window, forcing more frequent re-authentication.

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[augmentcode]

Review completed. 1 suggestions posted.

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