Done! I've created your customer revenue waterfall with board-ready commentary. Here's what the analysis shows:

**The Story:** Revenue was essentially flat year-over-year—finishing at $11.2M versus $11.2M, a ($5K) decline—but that masks significant customer churn and growth offsetting each other.

**Key Findings:**
- **Churn** was your biggest headwind: 4 customers left, taking $1.3M with them (Fenwick Legal and Birchway Foods alone account for $1.2M).
- **Contraction** hit 11 existing accounts for ($443K), led by Driftwood Media and Juniper Schools.
- **Expansion** from 23 upsell customers added back $1.2M—strong execution against your base.
- **New logos** brought $463K, with 6 new customers signed.

The bridge reconciles perfectly, and you have two output files ready:

1. **bridge.json** — raw data with all customer-level movements
2. **bridge-note.md** — board-ready one-pager with headline, waterfall table, drivers, and data provenance

Both are in `/output/`. The note is written for your board call and shows that while headline revenue was flat, the year reflects both significant losses (requiring win-back strategy) and strong expansion velocity in your install base.