Accept platform-pruned native lock entries

[brsbl]

Summary

• validate every native binding that is present in a package lock
• require at least one binding per native loader instead of every platform binding
• cover platform-pruned and entirely missing binding states in scaffold smoke

Verification

• npm run hygiene
• npm run scaffold:smoke
• git diff --check
• one deliberate review: no findings

Non-visual repository tooling correction; screenshot evidence is not applicable.

BB-Thread-ID: thr_bwikffmsvp