MDevolved Sync 0.2.0-alpha.1

Canonical MDevolved Sync for Obsidian alpha distribution. Built from MDevolved commit a6b745d and merged main commit 9ce01d6. New installs use plugin ID mdevolved-sync. Existing owd-sync installs remain separate legacy inputs and are never silently migrated or re-authorized. Verify all manual downloads against checksums.txt.