improvement(resend): add error handling, authMode, and naming consist… #10853

Job	Run time
Detect Version	3s
Test and Build / Test and Build	2m 16s
Check Docs Changes	-1s
Build AMD64 (./docker/realtime.Dockerfile, ghcr.io/simstudioai/realtime, ECR_REALTIME)	1m 8s
Build AMD64 (./docker/db.Dockerfile, ghcr.io/simstudioai/migrations, ECR_MIGRATIONS)	42s
Build AMD64 (./docker/app.Dockerfile, ghcr.io/simstudioai/simstudio, ECR_APP)	2m 28s
Build ARM64 (GHCR Only)	0s
Process Docs	0s
Create GHCR Manifests	0s
Create GitHub Release	0s
	6m 36s

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