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No mockup exists for 404/500 pages, so these follow the visual language already established elsewhere this session: floating-shadow card, big bold status number (matching the dashboard stat tiles' bold-number treatment) instead of a small overline. JobTable's first-run empty state gets an icon chip matching the landing page's feature-card icon treatment (rounded square, tinted primary background) instead of plain text -- the filtered "no results" one-liner stays as-is, that's a different, correctly minimal case. Main table Paper wrapper gets the same floating-shadow treatment as every other card this session. ViewStateNotice (the shared loading/error component used across the app) reviewed and left untouched -- it's an MUI Alert used as an inline banner, which is the correct pattern; it was never a "fake card" to begin with.