Add a detected_arch column to Hosts
Normalize arch to use the new Unknown value
Fix specs
Fix lie in docstring
Make Concern.run happen in public context
Whitespace
Add re-generated structure.sql
Add specs to ensure the new values are there
Move host callbacks into sorted position

MSP-11256
Add blank line so that `public` stands out more

MSP-11256
Merge branch 'feature/msp-11256/add-detected-arch'

MSP-11256