Migrate Overview.hs's ~100 lines of page-local CSS from raw Text.unlines strings to Clay definitions.
After the shared CSS is extracted (depends on t-XXX shared CSS task), Overview.hs will still have page-specific styles: waterfall chart, gates section, trajectory chart, zoom buttons, etc. Convert these from string literals to Clay for type checking and composability.
bild Omni/Web.hs passesAva verified: last comment from human author documents shipping/deployment with concrete evidence. Moving to Verified.
Overview.hs now imports FundStyle.sharedCss for section/KPI/tooltip styles instead of duplicating them inline. Removed exported fundCss (unused). Page-specific styles (waterfall, gates, charts, health grid, alerts, links, etc.) remain as local Text.unlines. Deployed to production.