chore(release): record verified v0.7.0 publication and package manifests

Point the Homebrew, Scoop and AUR manifests at the published v0.7.0 assets
(hashes from the verified checksums.sha256). Record the build route, asset
set, and verification evidence in CHANGELOG.md. The Homebrew tap (b09dafc)
and Scoop bucket (f412c1b) carry the same hashes.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>