Scope bernco product statewide to dedupe its source fetch

The bernco source is county-scoped by construction (all wells in
Bernalillo), so the county_Bernalillo filter was a no-op. Switching the
bernco product to state_NM scope (keeping include:[bernco]) yields
identical output but lets it share the statewide bernco source asset
instead of unifying bernco a second time under its own scope.

Removes the singleton Bernalillo cohort: bernco_waterlevels_timeseries
now joins the waterlevels_timeseries_state_NM cohort. Source assets
87 -> 86, cohort jobs 5 -> 4.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: jirhiker

orchestration/config/products.yaml

@@ -23,14 +23,20 @@ products:
     sources:
       exclude: []
 
+  # The bernco source (BernCoWaterLevelSource) is county-scoped by construction —
+  # all its wells are in Bernalillo — so a county filter is a no-op here. Using
+  # the state_NM scope (with include:[bernco]) yields identical output while
+  # sharing the statewide bernco source asset, so bernco unifies once instead of
+  # twice. (A county filter would only matter if the source returned wells
+  # outside Bernalillo, which it does not.)
   - id: bernco_waterlevels_timeseries
     parameter: waterlevels
     output_type: ogc_timeseries
     title: "Bernalillo County Water Level Time Series"
     description: "Bernalillo County water level timeseries per well"
     schedule: "0 8 * * *"
     spatial_filter:
-      county: Bernalillo
+      state: NM
     sources:
       include: [bernco]