Remove noise rows, implement powercfg + proxy, clean up Edge docs
01-bloatware: remove 'do not remove RDP/OneDrive' items from header
(documenting what we don't do is noise)
web/spec step-01: remove two flag-warn rows
03-system-registry: implement powercfg (standby-ac 0, monitor-ac 60,
standby-dc 30, monitor-dc 15) and proxy auto-detect disable (AutoDetect=0)
web/spec step-03: powercfg + proxy rows flag-todo -> flag-done, badge OK,
remove old Edge policies note (already implemented)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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