Add DriverTypeNames as the single source of truth for driver-type
dispatch strings, one const per currently-registered driver factory
(value = the exact factory DriverTypeName). Fixes the latent drift
between hand-authored dispatch-map literals and the real factory names
(e.g. TwinCAT/FOCAS/GalaxyMxGateway) at the source.
A reflection guard test in Core.Abstractions.Tests builds the real
registered-factory set by driving each *DriverFactoryExtensions.Register
into a live DriverFactoryRegistry (mirroring the Host's
DriverFactoryBootstrap) and asserts bidirectional parity with the
constants, so any future rename on either side breaks the test gate.
Consumers are rewired in Batch 2 WP8; Calculation's const lands with its
factory in WP7.
Claude-Session: https://claude.ai/code/session_01LVneM3eh1UtJxEisFXgmox
Joseph Doherty
12b9978974