fuel-db: customer on every row, place and holder for site, licence tables

Draft migrations rewritten in place (PD-16, PD-18), with 0004 for the licence
tables (PD-20) and rule tests in fuel-db/tests. Dashboards' column list
regenerated; coverage_detail selects operator_uid.

Checks: tests/run.sh 106 of 106; 18 views, 686 rows, 0 differences against a
reference from the same corpus. Codex's fixes to its inspection are not
re-inspected.

Bands: persistence, Superset. Rules: 6, 8.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

petrolyst-insights/dashboards/atoma/SPEC.md

@@ -230,7 +230,7 @@ Physical datasets, one per `public.v_*` view in fuel-db's `public` schema, plus
   so the opening refill is included) or a bill's AFN amount.
 
 Both use only `v_coverage`, `v_delivery` and `v_electricity_cost`. Every dataset has the same
-four site columns from `v_site`: `site_uid`, `site_code`, `site_name`, `site_label`.
+five columns from `v_site`: `site_uid`, `site_code`, `site_name`, `site_label`, `operator_uid` (the customer; the row filter uses it, PD-16).
 
 | Dataset | Grain | Used by | Native filters that apply |
 |---|---|---|---|