Improve L1 script automation from 40% to 60% coverage

[csharpfritz]

L1 migration script automates ~40%. Push to ~60% by adding: enum/bool/unit normalization, Response.Redirect shimming, Session detection, ViewState patterns, DataSourceID warnings.

[csharpfritz]

Closing — issues should be tracked on the upstream repo (FritzAndFriends/BlazorWebFormsComponents), not on the fork.