fix: add agentType to session.notification message type #686

Job	Run time
Typecheck	26s
Lint	14s
Secret Scan (gitleaks)	5s
Server DB Integration Tests	43s
Web Tests (Components)	25s
Server Unit Tests	29s
Unit Tests (macOS)	24s
Unit Tests (Node 20)	17s
Unit Tests (Node 24)	16s
Unit Tests (Node 22)	16s
Web Tests (Unit)	26s
Repo Provider Integration Tests	0s
E2E Tests	0s
Coverage Report	0s
Docker Build & Push	0s
Publish to npm	0s
	4m 1s

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