Move main process only accessible API bindings away from common

Editor assessment

This is a code movement with no behavior change — textbook `refactor`, so `chore` is a step off. The phrase 'main process only accessible API bindings' needs hyphenation ('main-process-only') to parse on first read. The subject does locate the change (away from 'common') with reasonable precision, and the length is fine. No body explains the benefit: a smaller renderer bundle, stricter runtime boundaries? That motivation is the interesting part, and its absence leaves the log entry looking like gratuitous churn.