Fix optimistic-rollback race in src/shared/hooks/useOptimisticData.ts

[Jagadeeshftw]

📌 Description

src/shared/hooks/useOptimisticData.ts applies an optimistic update then rolls back on failure. If two optimistic updates are in flight concurrently (e.g. rapid double-submit) and the first fails while the second is still pending, the rollback may incorrectly revert the second (still-pending) update's optimistic state instead of only its own.

🧩 Requirements and context

• Scope each optimistic update's rollback to only the state it changed, not a blanket revert-to-previous-snapshot.
• Handle overlapping in-flight updates correctly (e.g. via per-update tokens/versioning).
• Add a regression test simulating two overlapping updates where the first fails and the second succeeds.

🛠️ Suggested execution

• Review the rollback logic in useOptimisticData.ts for a shared 'previous snapshot' that multiple in-flight updates could clobber.
• Introduce per-update tracking (e.g. a version counter) so rollback only affects its own change.
• Add the overlapping-updates regression test.

✅ Acceptance criteria

• A failed optimistic update only rolls back its own change, not a concurrently-succeeding one.
• Regression test explicitly covers the overlapping-update race.
• Existing single-update optimistic/rollback tests still pass.

🔒 Security notes

No security impact; this is a data-correctness bug.

📋 Guidelines

• Minimum 95% test coverage
• Clear documentation
• Timeframe: 96 hours

[Agencybuilds]

i would love the opportunity to work on this issue, i'm motivated . detail oriented , and ready to contribute a solid solution while helping the community grow.

[Jagadeeshftw]

Assigned @Agencybuilds to this issue. Please include Closes #458 in the PR description or body so GitHub closes the issue on merge. Contributor chat: https://t.me/+vTbe0hOUKrFhNTJl

[grantfox-oss]

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Next steps:

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