context: evaluate having ContextConfigBuilder extend BaseConfigBuilder

`ContextConfigBuilder`'s class-level TSDoc has an open architectural note:

```ts
/**
* A builder class for configuring and customizing context module behavior within the Fusion Framework.
* ...
* @todo - this should extend the BaseConfigBuilder
*/
export class ContextConfigBuilder<...> {
```

Evaluate whether `ContextConfigBuilder` should be refactored to extend `BaseConfigBuilder` for consistency with other module config builders in the framework.

_Originally flagged as an `@todo` comment while resolving fusion-lint warnings on `fix/sematic-lint`._

Start by locating ContextConfigBuilder and BaseConfigBuilder, then compare ContextConfigBuilder with the other module config builders referenced in the issue. Determine whether extending BaseConfigBuilder preserves the current context configuration behavior and matches the framework’s existing pattern; done means the architectural decision is documented and any agreed refactor is validated.

Written by the indexing model from the issue text.