modelCapabilityOverrides top-level property
The process-wide user override layer. Hosts install the parsed
models.overrides section once at boot (and re-install after a
settings-flow write); null keeps every build path byte-identical to
the pre-resolver behavior (REG-1). Same seam shape as
providerFilterEnvOverride in provider_catalog.dart.
Implementation
ModelCapabilityOverrides? modelCapabilityOverrides;