Fix SPARQL term-namespace filters to match actual METPO IRI scheme

ODK 1.6.1 regeneration changed filters from https://w3id.org/metpo/METPO_
to https://w3id.org/METPO_ in 5 SPARQL files. Both were wrong: METPO terms
use bare numeric IRIs (https://w3id.org/metpo/0000001, no METPO_ prefix).
Sets the correct prefix https://w3id.org/metpo/ in all 5 files. The
pre-existing METPO_ suffix was also a bug that matched nothing in the OWL;
this commit fixes both the regression and the underlying pre-existing error.

Fixes Copilot review comments on PR #487.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: turbomam

src/sparql/dc-properties-violation.sparql

@@ -6,6 +6,6 @@
 SELECT ?term ?predicate WHERE {
   ?term ?predicate ?value .
   FILTER(STRSTARTS(STR(?predicate), "http://purl.org/dc/elements/1.1/"))
-  FILTER(isIRI(?term) && (STRSTARTS(str(?term), "https://w3id.org/METPO_")))
+  FILTER(isIRI(?term) && (STRSTARTS(str(?term), "https://w3id.org/metpo/")))
 }
 

src/sparql/iri-range-violation.sparql

@@ -13,6 +13,6 @@ WHERE {
     oboInOwl:inSubset
     dcterms:contributor  }
   ?term ?property ?value .
-  FILTER(isIRI(?term) && (STRSTARTS(str(?term), "https://w3id.org/METPO_")))
+  FILTER(isIRI(?term) && (STRSTARTS(str(?term), "https://w3id.org/metpo/")))
   FILTER (!isIRI(?value))
 }

src/sparql/label-with-iri-violation.sparql

@@ -4,5 +4,5 @@ SELECT ?term ?value
 WHERE {
   ?term rdfs:label ?value .
   FILTER (REGEX(?value, "http[s]?[:]"))
-  FILTER(isIRI(?term) && (STRSTARTS(str(?term), "https://w3id.org/METPO_")))
+  FILTER(isIRI(?term) && (STRSTARTS(str(?term), "https://w3id.org/metpo/")))
 }

src/sparql/metpo_terms.sparql

@@ -3,5 +3,5 @@ WHERE {
   { ?s1 ?p1 ?term . }
   UNION
   { ?term ?p2 ?o2 . }
-  FILTER(isIRI(?term) && (STRSTARTS(str(?term), "https://w3id.org/METPO_")))
+  FILTER(isIRI(?term) && (STRSTARTS(str(?term), "https://w3id.org/metpo/")))
 }

src/sparql/owldef-self-reference-violation.sparql

@@ -7,5 +7,5 @@ SELECT ?term WHERE {
   { ?term owl:equivalentClass [ owl:intersectionOf [ rdf:rest*/rdf:first ?term ] ] }
     UNION
   { ?term owl:equivalentClass [ owl:intersectionOf [ rdf:rest*/rdf:first [ owl:someValuesFrom ?term ] ] ] }
-  FILTER(isIRI(?term) && (STRSTARTS(str(?term), "https://w3id.org/METPO_")))
+  FILTER(isIRI(?term) && (STRSTARTS(str(?term), "https://w3id.org/metpo/")))
 }