a tool for shared writing and social publishing

Remove accidentally committed files from bbc6c135 master

Remove scratch/, scripts/, database.sql, appview/test.ts, CoordDebugger.tsx, search_loose_leafs.ts, supabase migration, and tmp_standard-site-migration.md that were unintentionally included in the previous commit. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>