Upgrade Clerk packages and Expo integration

[juliusmarminge]

Fixes sign in on fresh devices (Apple Review) where passkeys were attempted but not found

Summary

• Upgrade Clerk dependencies and Expo integration configuration.
• Remove deprecated thread snooze orchestration, persistence, contracts, and UI handling.
• Simplify thread list, chat, sidebar, and provider state flows across web, mobile, and shared runtime packages.
• Refresh workspace dependency configuration and lockfile.

Testing

• Not run.

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Note

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[macroscopeapp]

Approvability

Verdict: Needs human review

This PR includes a major version bump for @clerk/expo (3.x → 4.x), which could introduce breaking changes. Since Clerk handles authentication (security-sensitive), the upgrade warrants human verification of compatibility and intended behavior.

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