Important: max_participants not enforced in register_team

[0xdevcollins]

Severity: Important

The max_participants field on Hackathon is set at creation but never checked when registering teams. The cap is decorative.

Location

register_team in contracts/hackathon_registry/src/contract.rs (around line 238)

Fix

Before incrementing submission_count:

if hackathon.max_participants > 0 && hackathon.submission_count >= hackathon.max_participants {
    return Err(HackathonError::MaxParticipantsReached);
}

(MaxParticipantsReached already exists in error.rs:13.)

Tests

• Registration at cap → MaxParticipantsReached
• Registration below cap → ok
• max_participants == 0 means unlimited (current behavior)

[godamongstmen897]

Can you please assign me this issue to fix