docs: clarify release deployment process and enable manual deploy trigger

- Add workflow_dispatch to deploy.yml for manual deployment triggers
- Document that releases don't auto-deploy to production
- Add instructions for deploying releases to production
- Add verification steps for deployment

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Co-Authored-By: Claude <noreply@anthropic.com>

internal/auth/types.go

@@ -16,4 +16,4 @@ const (
 	MethodHTTP Method = "http"
 	// No authentication - should only be used for local development and testing
 	MethodNone Method = "none"
-)
+)