Document a provider-explicit SQLx persistence adapter for the SaaS tutorial without adding SQLx to hemx core or the workspace. The recipe keeps auth/session, CSRF, generated helpers, and Result handler mapping as the app boundary.
req: laws/002
req: laws/004
req: auth/001
req: auth/002
req: auth/004
req: examples/001
req: canonical_authoring/002
req: failure/004