Dev-seed boot smoke for the retrofit floor: runs the REAL auth dev-seed
binder (so assertFeatureConformance executes like pnpm dev), resolves
every auth manifest use case + controller from the container, signs in a
seeded user server-side, and asserts the dispatcher wires exactly one
feature's binders — proving no dangling DI symbols from the deleted demo
features.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016j8z4VHjedXDTjEDNg7qHK