* feat(admin): add design upload endpoints for logo and favicon Add dedicated admin design routes for logo (512x512, WebP q85) and favicon (256x256, WebP q90) uploads. Add faviconUrl column to community_settings schema with migration. Extend admin-settings route and validation to support faviconUrl in GET/PUT endpoints and public settings response. * fix(admin): regenerate migration snapshot and fix test lint issues Regenerated the favicon_url migration via drizzle-kit to include the required snapshot file for CI schema drift check. Also removed an unused eslint-disable directive and fixed the mock requireAdmin preHandler to use sync done() callback instead of async. * fix(test): add favicon_url column to tenant isolation schema The integration test creates tables manually via pushSchema() rather than running migrations. Add the new favicon_url column to keep the hardcoded schema in sync with the Drizzle schema.