Add all vs. mid (rcp60) outputs for hydrograph and monthly flow charts, and min/mid/max for table stats for hydroviz webapp#709

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cstephen wants to merge 7 commits intomainfrom

aggregate_hydroviz_endpoints

Commits on Mar 19, 2026

Add all vs. mid (rcp60) outputs for hydrograph and monthly flow charts, and min/mid/max for table stats.
cstephen
committed

Commits on Mar 25, 2026

Change hydrograph and monthly_flow "all" key to "extremes" to match webapp.
cstephen
committed
Add min/max annual flow data to hydroviz endpoint for polarscatter chart.
cstephen
committed

Commits on Mar 27, 2026

Add gauge_id, h8_outlet, and huc8 fields to hydroviz endpoint.
cstephen
committed

Commits on Mar 30, 2026

Implement "Maurer plus projected delta" conversion with multiple eras.
cstephen
committed

Commits on Apr 1, 2026

Set hard limits on Maurer + delta stats, and other fixes.
cstephen
committed

Commits on Apr 2, 2026

Revert back to raw CMIP5 data, not Maurer + delta method.
cstephen
committed