[Quality][Medium] bid submission and auction selection: resource and rate limits — QE-2026-08

[Baskarayelu]

Objective

make bid acceptance, ranking, expiry, and winner selection deterministic and resistant to stale or adversarial inputs. Specifically, implement and verify resource and rate limits so the repository provides a deterministic, reviewable guarantee under normal, invalid, repeated, concurrent, and failure conditions.

Why this matters

The current behavior or coverage needs a production-grade guarantee here: ambiguous auction state can allocate financing unfairly or strand participant funds. Without this work, unbounded input or repeated work exhausting service, ledger, or browser resources could survive review or deployment.

This is a substantive engineering change. It is not a typo fix, formatting-only change, documentation-only change, or trivial dependency update.

Priority

Medium

Scope

Area: smart-contract correctness / fairness

Starting points:

• src/bid.rs
• Add or update the closest focused unit, integration, property, or contract test beside the implementation.

Verify the existing implementation before changing it. Keep the change focused on this issue and preserve existing public behavior unless the acceptance criteria require a documented compatibility change.

Acceptance criteria

• enforce bounded input and work before expensive operations, return actionable limit errors, and preserve fair use.
• Preserve compatible public behavior and make any required migration, error, or response-shape change explicit.
• Ensure rejected, stale, repeated, and failed operations leave no unauthorized or partial state.
• Add focused regression coverage that proves the invariant at the actual integration boundary.

Required validation

• test boundary and adversarial sizes, burst traffic, cancellation, and recovery after throttling.
• Run formatter, lint, type/build checks, and the complete repository test suite.
• Run applicable security, contract, migration, gas/resource, or accessibility checks and record commands and results.
• Confirm generated artifacts, secrets, disabled checks, and unrelated refactors are absent from the change.

Documentation requirements

Document the design and invariants, failure behavior and compatibility impact, migration or rollback considerations, operational limitations, and security assumptions where applicable.

Out of scope

No unrelated refactors, typo or formatting-only changes, docs-only changes, broad dependency upgrades, disabled CI, generated noise, or secrets.

Contributor deliverables

Wait for maintainer assignment. Open a focused branch and reference this issue with Closes #<issue-number> or Fixes #<issue-number>. Check off every criterion, link the implementation and tests, include commands and results, and include a short security/correctness note.

Maintainer quality bar

The PR must change real behavior, address every criterion, include meaningful success and failure-path tests, cover relevant edge cases, remain focused, document compatibility, and provide complete validation evidence. Issue creation does not guarantee reward eligibility; PR quality is evaluated independently.

[Bayovictor]

@Bayovictor has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

Hi, Please I would like to work on this.

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

[drips-wave]

Congratulations, @Bayovictor! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on August 31, 2026.

🧑‍💻 @Bayovictor: 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

When opening a PR, please link it to this issue to ensure it gets tracked accurately. Points are awarded when this issue is marked as completed by the maintainer.

🤠 Repo maintainers: Please keep an eye on the contributor's progress and review their work before the due date. You can manage this issue, including adjusting its complexity and points, here.

🌊 Happy Wave 🌊