API's market-snapshot returns priceChangePct with keys d1/d7/d30 but the FE interface and KpiStrip accessor used day1/day7/day30, causing a TypeError crash on the home page for authenticated users. Rename the FE type, update KpiStrip accessors, and fix the landing test fixture. Fixes TEC-3091. Co-Authored-By: Paperclip <noreply@paperclip.ing>