Improve nonce and commitment validation to prevent stale or replayed contract actions

[grantfox-oss]

Strengthen nonce and commitment enforcement so repeated or stale executions cannot produce inconsistent contract state across action flows.

• Affected files: app/contract/contracts/Folder/src/nonce.rs, app/contract/contracts/Folder/src/nonce_test.rs, app/contract/contracts/Folder/src/commitment.rs, app/contract/contracts/Folder/src/commitment_test.rs, app/contract/contracts/Folder/src/lib.rs, app/contract/contracts/Folder/src/storage.rs, app/contract/contracts/Folder/src/test_context.rs, app/contract/contracts/Folder/src/metadata.rs
• Acceptance criteria:
  • Nonce and commitment checks reject stale or duplicated requests before state mutation occurs.
  • Replay-safe behavior is verified in both standard and failure-recovery execution paths.
  • Contract docs and developer notes explain which actions depend on nonce or commitment verification.

[mxllv]

Can you assign this to me ?

[grantfox-oss]

🦊 GrantFox — @mxllv has been assigned to this issue as part of the Third Campaign campaign!

Next steps:

1. Open a Pull Request referencing this issue (e.g., Closes #544)
2. Your PR will be reviewed by the BlockDash-Studios maintainers

Good luck! Track your progress on GrantFox.

[grantfox-oss]

🎉 This issue has been marked as completed on GrantFox as part of the Third Campaign campaign!

@mxllv's PR #548 was approved and merged by @MaryammAli.

🏆 @mxllv: You earned 35 FoxPoints for this contribution! Your current tier: Explorer (414 total points). Track your full progress on GrantFox.

👏 Great work, @mxllv! Keep contributing to BlockDash-Studios.