Add Zustand hydration recovery

[Jerry-Tekh]

Summary

• Add shared Zustand persist hydration recovery with default-state reset, appLogger warning, and Sentry warning events
• Wire recovery into all persisted stores and show a one-time preferences reset toast
• Add malformed JSON hydration regression coverage for UI, settings, and course progress stores

Tests

• npm test -- --runInBand src/tests/store/hydrationRecovery.test.ts src/tests/store/degradationStore.test.ts
• npx tsc --noEmit --ignoreDeprecations 6.0 --pretty false (fails on pre-existing unrelated repo errors in App.tsx and other files; touched store files are clean under filtered check)

Closes #679

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[RUKAYAT-CODER]

Kindly resolve conflict

[Jerry-Tekh]

Conflicts have been resolved and pushed.

I also fixed two parser blockers found after merging latest main. The PR is now mergeable, but CI remains red because the same broad CI failures are currently present on upstream main as well.

[Jerry-Tekh]

Kindly resolve conflict
Conflicts have been resolved and pushed.

I also fixed two parser blockers found after merging latest main. The PR is now mergeable, but CI remains red because the same broad CI failures are currently present on upstream main as well.