v0.4.1

Event properties & goal revenue.

Explore your custom-event properties from the dashboard: string properties get a value distribution, numeric ones get sum/avg/count, and a numeric property grouped by a string one gives revenue-by-segment (by plan, by currency, ...). Event goals can now name a numeric property to sum — each goal reports total revenue and average per converting visitor (guarded goals.value_prop migration, applied on update). Also: CSP is injected at build time only (fixes vite dev HMR) and a sharper README tagline.