Remove the in-tree @snowluma/sqlite wrapper and vendored better-sqlite3 prebuilts; migrate consumers to node:sqlite's synchronous API. Replaced imports and types (Database/Statement -> DatabaseSync/StatementSync), updated PRAGMA calls to use exec, and adjusted code in onebot (media/message/reaction stores) and protocol (identity service). Vite config no longer bundles sqlite native binaries and references to the sqlite workspace were removed. Also delete the packages/sqlite package and its native prebuild artifacts, and add a couple of unrelated AST improvements in proton: use a module-level shared wrapper cache and add an inheritance cache to avoid repeated scans. Minor import reordering/cleanup applied where needed.