feat(plugin-email)!: email templates resolve from the registry; the built-in seed, the boot sweep and the live projector retire (ADR-0131 D6/D10, C4 stage 2)

feat(plugin-email)!: email templates resolve from the registry; the built-in seed, the boot sweep and the live projector retire (ADR-0131 D6/D10, C4 stage 2) #10182