Add AR-39_ERROR [PCTMOD] as the error name for AR-39 [PCTMOD]

Closes #48

Author: DocOtak

CHANGELOG

@@ -3,6 +3,7 @@ v2025.09.0 (2025-09-??)
 Parameter Changes
 -----------------
 * Add UMOL/L as an allowed unit for UREA, the default print precision of .4f is based on incoming .1f data in nmol units
+* Add AR-39_ERROR [PCTMOD] as the error name for AR-39 [PCTMOD]
 
 API Changes
 -----------

src/cchdo/params/_whp_names.py

@@ -2426,7 +2426,7 @@
 description=':sup:`39`\\ Ar enrichment/depletion compared to modern atmospheric ratios',
 note="The units mean '% modern'",
 warning=None,
-error_name=None,
+error_name='AR-39_ERROR',
 cf_unit='1e-2',
 reference_scale=None,
 whp_number=16,

src/cchdo/params/params.sqlite3

@@ -6164,7 +6164,7 @@ INSERT INTO "whp_names" VALUES('RA-228','DM/.1MG',NULL,'radium_228',-1.0,10.0,'R
 INSERT INTO "whp_names" VALUES('CTDXMISS','%TRANS',NULL,'ctd_transmissometer',0.0,100.0,NULL,NULL,NULL,9,2,NULL,NULL,NULL,NULL,NULL);
 INSERT INTO "whp_names" VALUES('CTDXMISS','VOLTS',NULL,'ctd_transmissometer_raw',0.0,5.0,NULL,NULL,NULL,9,4,NULL,NULL,NULL,NULL,NULL);
 INSERT INTO "whp_names" VALUES('CTDBEAMCP','/METER','volume_beam_attenuation_coefficient_of_radiative_flux_in_sea_water_corrected_for_pure_water_attenuance','ctd_beamcp',NULL,NULL,NULL,NULL,NULL,9,4,650.0,NULL,NULL,NULL,NULL);
-INSERT INTO "whp_names" VALUES('AR-39','PCTMOD',NULL,'argon_39',0.0,100.0,NULL,NULL,NULL,9,1,NULL,NULL,NULL,NULL,NULL);
+INSERT INTO "whp_names" VALUES('AR-39','PCTMOD',NULL,'argon_39',0.0,100.0,'AR-39_ERROR',NULL,NULL,9,1,NULL,NULL,NULL,NULL,NULL);
 INSERT INTO "whp_names" VALUES('CS-137','DM/.1MG',NULL,'cesium_137',0.0,100.0,'CS137ER',NULL,NULL,9,2,NULL,NULL,NULL,NULL,NULL);
 INSERT INTO "whp_names" VALUES('KR-85','DM/MG',NULL,'krypton_85',0.0,5.0,NULL,NULL,NULL,9,2,NULL,NULL,NULL,NULL,NULL);
 INSERT INTO "whp_names" VALUES('SR-90','DM/.1MG',NULL,'strontium_90',0.0,100.0,NULL,NULL,NULL,9,2,NULL,NULL,NULL,NULL,NULL);