Add n8n workflow schedule type, Swedish date format, and Data & Privacy page

- New "n8n workflow" schedule type for manually tracked tasks, plumbed
  through the form, filters, group labels, and API validation, same as
  the earlier backup/update types.
- Dates (cron next-run, server last-seen) now render in Swedish
  standard format (YYYY-MM-DD, 24-hour clock) via a shared formatter
  instead of the browser's default locale.
- New Data & Privacy page describing what's stored, where, how long,
  and how to remove it, linked from a footer shown on every page
  alongside a "By bobbantech" credit linking to bobbantech.com.

web/tsconfig.tsbuildinfo

@@ -1 +1 @@
-{"root":["./src/app.tsx","./src/main.tsx","./src/vite-env.d.ts","./src/api/client.ts","./src/components/copybutton.tsx","./src/components/filterbar.tsx","./src/components/servergroup.tsx","./src/components/taskform.tsx","./src/components/tasktable.tsx","./src/pages/dashboard.tsx","./src/pages/login.tsx","./src/pages/serversadmin.tsx"],"version":"5.9.3"}
+{"root":["./src/app.tsx","./src/main.tsx","./src/vite-env.d.ts","./src/api/client.ts","./src/components/copybutton.tsx","./src/components/filterbar.tsx","./src/components/servergroup.tsx","./src/components/taskform.tsx","./src/components/tasktable.tsx","./src/pages/dashboard.tsx","./src/pages/login.tsx","./src/pages/privacy.tsx","./src/pages/serversadmin.tsx","./src/utils/date.ts"],"version":"5.9.3"}