fix(rbac): Improve member removal permissions & enhance hackathon retrieval logic #309

Job	Run time
Security & Code Quality	1m 43s
Test Suite	1m 0s
Database Tests	1m 23s
Build & Performance	5m 16s
Enhanced Security Testing	5m 12s
Deploy to Staging	0s
Rollback on Failure	0s
Deploy to Production	0s
Performance Monitoring	0s
Performance Monitoring (Staging)	0s
	14m 34s

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