CH column metadata: esios.archives_i90.plant_name

# `esios.archives_i90.plant_name` Human-readable canonical plant name. Cascade: `unit_name_aliases.yml` manual override → ArcGIS `descripcion` (via `uf_installation_link`) → REE `description_short` → `uf_code` fallback. Prefer this over `unit_name` (the verbatim REE field) when writing articles — it carries explicit plant + location. - **category**: dimension - **common_pitfalls**: - Aliases are manually curated; if a plant is missing, REE's `description_short` shows through (may be cryptic like 'AMBIETA' instead of 'Amorebieta CCGT') - Article erratum protocol: every reader-flagged misnaming should add an alias entry to `config/metadata/unit_name_aliases.yml`