Move business logic out of App Router into module packages, add boundary validation scripts, and keep all routes as thin re-exports without changing URLs or API behavior.
Co-authored-by: Cursor <cursoragent@cursor.com>
Wire nested nav pages for phases 5.1-5.11 to real list/create endpoints, fix COA import connectivity via same-origin proxy, and add operational migration.
Co-authored-by: Cursor <cursoragent@cursor.com>
