#3 Issue: [Chart] "Monthly Recurring Revenue" (MRR)

[elizabetheonoja-art]

Description: "Creators live by MRR. Show a bar chart of their estimated monthly income based on active subs."

Acceptance Criteria:

[ ] Fetch active subscriber count per tier.

[ ] Calculate (Count * TierPrice).

[ ] Render chart.

Priority: High

Labels: analytics, creator-tools