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[MEDIUM] Prisma queries lack pagination limits — potential unbounded result sets #127

Description

@kilodesodiq-arch

Engineering Gap

Several Prisma findMany queries in services lack take limits, potentially returning unbounded result sets. claims.service.ts findAll() and campaigns.service.ts queries may return all records.

Codebase Evidence

  • app/backend/src/claims/claims.service.ts line 127: this.prisma.claim.findMany() without take
  • app/backend/src/claims/claims.service.ts lines 697-703: Export query uses limit param but some paths may not

Risk Profile

Memory exhaustion on large datasets. Slow API responses.

Remediation Strategy

Add default take limit to all unbounded findMany queries. Enforce max limit. Add pagination to all list endpoints.

Success Conditions

  • All findMany queries have take limits
  • Default and max limits enforced
  • Pagination on all list endpoints

Change Surface

Files: All Prisma service files with findMany

Security Review

No security impact.

Completion Checklist

  • Implementation completed
  • Peer reviewed
  • Tests passing
  • Ready for merge

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