Identify and Implement Massive Codebase Reduction

Identify an opportunity to massively reduce the amount of code (lines of code) in any part of the repo: - Similar functionality that can be unified and reused - Code that has been valuable but no more - Front end component or group of them duplicates another component functionality. Use the most modern and nice looking - Move to DBOS and get rid of supporting functionality relying on DBOS - etc. Implement it

Net −313 LOC (#4851 merged, deploy green, full gate green): shared StatGrid/search/edit-load hooks, retired ORM columns, duplicate queue tests. Deferred: column DROP migration next release; rename-alias removal (fleet-gated).