publish: CTD to ERDDAP

[bbest]

Workflow

• File: publish_ctd_to_erddap.qmd
• Source ingest: ingest_calcofi_ctd-cast
• Portal: ERDDAP
• Format: NCCSV with CF conventions

Checklist

• /publish-template ctd erddap scaffolded
• ERDDAP variable attributes defined (CF standard names)
• NCCSV global attributes filled
• Data formatted (ISO 8601 time, WGS84 coords, NaN missing)
• datasets.xml snippet generated for ERDDAP admin
• Validated against CF conventions
• Uploaded to GCS
• _targets.R updated
• PR reviewed & merged

Dependencies

• Depends on: release_database (or ingest_calcofi_ctd-cast)