Add hard bounds for pagination inputs in contract queries

[hman38705]

Area: Contracts
Files: contracts/predict-iq/src/modules/queries.rs

Problem: Query functions accept unbounded limit, increasing gas/memory risk.

Acceptance Criteria:

• Enforce sane max limit constant.
• Document truncation behavior.
• Tests validate clamping logic.

[steph-crown]

@steph-crown has applied to work on this issue as part of the Stellar Wave Program's 3rd wave.

I'm a software engineer with five years of experience building high-performance systems in Rust and TypeScript. I'll implement hard bounds for pagination inputs in contracts/predict-iq/src/modules/queries.rs to ensure that query functions remain gas-efficient and protected against unbounded memory usage.

Relevant experience
Rust expertise: I've built Rust-based tools and explored Soroban architectures with focus on gas-metering and the specific resource limits of the Stellar network.

Technical approach
Constant Enforcement: I'll define a MAX_QUERY_LIMIT constant (e.g., 50 or 100) and implement logic to clamp the user-provided limit to this value.

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

[fejilaup-cloud]

@fejilaup-cloud has applied to work on this issue as part of the Stellar Wave Program's 3rd wave.

i can implement this please assign me

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

[drips-wave]

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

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[drips-wave]

This issue has been completed by @fejilaup-cloud as part of the Stellar Wave Program's 3rd Wave 🥳

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