- Agent Note: correct the stale worker-adoption paragraph — the worker
consumes the seam constants directly by name (no RESERVED_WORDS /
RESERVED_ERROR_PROPERTIES re-alias) — and describe DUNDER_MEMBER as
`__x__` (non-empty middle).
- types.ts: document RESERVED_BINDING_GLOBALS on CodeBindingNamespace.global
(names like `__dsh_main__` pass the identifier rule but are still refused)
and the non-empty-middle dunder rule on memberNameProperty; propagate to
the type-equiv derivative docs (both languages, re-recorded).