Adds explicit default-false RuntimeConfig ask_serving_enabled and verified_serving_enabled fields while preserving default-dark helper behavior. Includes focused ASK/VERIFIED gate tests and cross-gate independence coverage. No pass_manager wiring, runtime wiring, verify.py wiring, served behavior, or CLAIMS/metric movement.
Adds a default-dark verified_serving_enabled helper with focused tests. The helper is unwired: no runtime integration, no verify.py wiring, no eval producer imports, no served VERIFIED behavior, and no CLAIMS/metric movement.
