- Delete the now-unused CdpContext::new_full (its only caller switched to
new_with_shared_context); have _new_inner build the shared BrowserContext and
delegate, so the struct's field list lives in one place.
- Extract drive_module_eval, shared verbatim by load_module and
load_inline_module.
- Update comments that still described the deleted process-wide V8 lock and the
single-LocalSet model to the per-connection reality, drop the dangling
reference to the removed obscura-js/src/v8_lock.rs, and soften the
ISOLATE_CREATE_LOCK note now that the main-thread warmup is the real guard
against the InitializeBuiltinJSDispatchTable segfault.
Refs #430.