feat: show subscription requests in admin orders page with type column

feat: complete subscription system with dates, expiry notifications, admin/client alerts, accounting

feat: HTML/CSS ZIP preview upload for templates (extract + iframe)

feat: server plans system + fix template versions/assets pages

feat: complete admin/client pages - orders, templates, projects, fields, versions, users, deployments

fix: wrap paginated arrays in named objects, resilient startup

refactor: part 1 technical improvements - logging, response standards, caching, soft delete

fix: skip invalid sections on landing save instead of failing entirely

fix: add detailed landing validation error logging with section name

fix: separate client/admin refresh cookies to prevent cross-session takeover on same browser

feat: add accounting system with expenses, revenue summary, and monthly history

fix: separate site settings endpoint for logo save to bypass landing validation

Fix sameSite cookie, show user names, home link in sidebar

Initial commit