Trims the Postbox-refactor section of CLAUDE.md from ~750 lines to ~160
by moving per-wave outcomes, the running tally of Postbox-free modules,
and verbose wave-selection guidance backstory into
docs/superpowers/postbox-refactor-log.md. Also adds a spec document for
the reorganization.
Kept in-place in CLAUDE.md: standing rules, engine typealias cheat sheet,
MediaResource consumer-migration patterns, TelegramEngine.Resources facade
inventory, and terse bullet-form guidance with log cross-references.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>