BOLT-1295: chart color & token consistency pass

Linear: https://linear.app/texture/issue/BOLT-1295 Three-in-one PR per Richie call (2026-06-17 Slack thread closing BOLT-1193): 1. SiteEnergyCharts.tsx — solar: --color-viz-categorical-3 → --color-state-auto-data 2. SiteEnergyCharts.tsx — battery discharge: --color-state-eco-data → --color-state-discharging-data 3. standalone charts in apps/dashboard/components/charts/*.tsx — pass semantic color props instead of falling through to AreaSeries default purple (EnergyConsumption/Production/Generation/Storage/Capacity, GridEnergy, MeterConsumption). See Linear desc table for the per-chart mapping. Out-of-scope: AreaSeries variant prop, meta.sparse disclosure, chart-height standardization, central edges chart-theme map — separate follow-ons. Branch: winston/bolt-1295-chart-color-consistency Verification: snapshot tests updated, lint/typecheck/build/test green, preview deploy visual diff with Richie.