Two bugs:
1. Synthetic dates projected onto 1970/71 fell outside the dashboard's
default time range (now-10y → now), so Grafana filtered out every
point. Switched to a sliding 12-month window
(CURRENT_DATE - INTERVAL '12 months') as the projection base, plus
a per-panel timeFrom: "13M" override so the panel always shows the
last 13 months regardless of the dashboard's time picker.
2. ORDER BY tax_year, pay_date violated Grafana's long→wide conversion
requirement (data must be ascending by time). Wrapped in a CTE and
re-ordered by the synthetic time column. Pivoted result is now a
single wide frame with 7 series (2019/20…2025/26).
a17304f735