feat: notification infrastructure + password mgmt + seeder fixes + Id… #7

Job	Run time
CodeQL (.NET Backend)	32s
CodeQL (TypeScript/React)	1m 44s
Dependency Vulnerability Review	6s
Hardcoded Secrets Detection	3s
npm Vulnerability Audit	0s
Docker Image Security Scan	0s
NuGet Vulnerability Audit	0s
Tenant Isolation Security Tests	0s
Security Scan Report	4s
Security Gate	3s
	2m 32s

Provide feedback