Massively Reduce Repository Code Via Refactoring

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

Collapsed 0401_baseline + 57 migrations into one 202610130700 baseline: −4,268 lines net. Schema/seed parity proven vs chain-built DB; full gate green; PR #5325 merged; dev Jaah Deploy succeeded. Smaller consolidations named as follow-ups in report.