fix(stores): block persistence until hydration finishes

[alichherawalla]

Outcome

A Mobile restart cannot overwrite or remove saved state before asynchronous hydration finishes. Normal persistence starts after hydration.

Scope

• Add one hydration-gated storage contract.
• Wire all six persisted Zustand stores to the same contract.
• Keep platform persistence in Mobile.

Evidence

• Hydration persistence tests pass: 3 of 3.
• Focused ESLint passes.
• The iOS Simulator launched and restarted, and Hermes recorded the hydration gate on both launches.

Open gates

• Physical-device verification remains open because the listed iPhones were offline.
• Live visual inspection remains open.
• The complete production gate remains open with the stacked recovery baseline.

This PR is draft until the required gates pass.

Stack

Base: codex/f1-app-launch

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud