Contract test-consumer: Add unauthorized caller revert tests

[aji70]

Description (Contract)

Improve the test-consumer Soroban contract. Add unauthorized caller revert tests. Work in contract/contracts/test-consumer/.

Tasks

• Implement the change in the relevant code paths
• Wire or persist state where the feature touches runtime behavior
• Add tests (unit, integration, and/or contract/UI as appropriate)

Additional Requirements

• Handle stale, disconnected, or invalid states gracefully where applicable
• Follow existing patterns in this repository (linting, modules, security)

Acceptance Criteria

• Contract tests and wasm release build pass in CI
• No regressions in closely related user or API flows

[ndii-dev]

@ndii-dev has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

hi, i would like to work on this

ℹ️ Repo Maintainers: To accept this application, review their application or assign @ndii-dev to this issue.

[drips-wave]

Congratulations, @ndii-dev! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on June 30, 2026.

🧑‍💻 @ndii-dev: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

Warning

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[grantfox-oss]

🦊 GrantFox — @ndii-dev has been assigned to this issue!

Next steps:

1. Open a Pull Request referencing this issue (e.g., Closes #981)
2. Your PR will be reviewed by the MyFanss maintainers

Good luck! Track your progress on GrantFox.

[grantfox-oss]

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

@ndii-dev's PR #1311 was approved and merged by @aji70.

🏆 @ndii-dev: You earned 35 FoxPoints for this contribution! Your current tier: Explorer (226 total points). Track your full progress on GrantFox.

👏 Great work, @ndii-dev! Keep contributing to MyFanss.

[drips-wave]

This issue has been completed by @ndii-dev as part of the Stellar Wave Program's 6th Wave 🥳

😎 @ndii-dev: You earned 200 Points for completing this issue! After the current Wave ends, you'll be eligible for a percentage of the Wave's reward pool based on the percentage of total points you've earned. Learn more here. You can also Leave a review to share your experience working on this issue.

🧑‍💻 Repo maintainers: How'd the contributor do? Leave a review to share your experience working with them.