Dead code: 77 verified-unused exports, files (BackArrow, MenuBars, cookies.ts, db/create.ts, schemas/comment.ts, security-headers.ts) and 12 unused dependencies removed Comments: ~370 RESTATE comments stripped across 53 files; 2 verbose blocks tightened; dead commented-out config removed Complexity: bulkUpsert extracted into 11 per-entity helpers (CCN 156->~10); login formHandler split into 3 submitters (CCN 63->~5); account page render split into 8 section components (CCN 40); updatePost SQL builder rebuilt; assert*Owned consolidated behind generic assertOwnedBy Defensive guards: 4 redundant rethrow/nullish guards removed
Refactor sitemap.xml route to read the Host header, determine the active site, and produce a sitemap scoped to that site's routes with canonical URLs. Extracts route definitions and XML generation into shared modules.
