Add pipeline steps (graph-01, graph-02) to Rakefile.

Regenerate graph-01.ttl and graph-02.ttl with the corrected output.

Rakefile

@@ -61,6 +61,18 @@ file 'data/works.ttl' => 'src/map_work.rb' do
   run 'src/map_work.rb'
 end
 
+# ── Pipeline steps ───────────────────────────────────────────────────────────
+
+file 'data/graph-01.ttl' => 'map/step-01.rb' do
+  run 'map/step-01.rb'
+end
+
+UPDATE_QUERIES = FileList['updates/*.rq']
+
+file 'data/graph-02.ttl' => ['data/graph-01.ttl', 'map/step-02.rb'] + UPDATE_QUERIES do
+  run 'map/step-02.rb'
+end
+
 # ── Aggregate tasks ──────────────────────────────────────────────────────────
 
 GENERATED = %w[
@@ -79,12 +91,17 @@ GENERATED = %w[
   data/works.ttl
 ].freeze
 
-task default: GENERATED
+GRAPHS = %w[
+  data/graph-01.ttl
+  data/graph-02.ttl
+].freeze
+
+task default: GENERATED + GRAPHS
 
 task :clean do
   review_files = %w[
     data/countries_wikidata_review.ttl
     data/religions_wikidata_review.ttl
   ]
-  rm_f GENERATED + review_files
+  rm_f GENERATED + GRAPHS + review_files
 end

src/map/step_01.rs

@@ -79,10 +79,19 @@ fn class_iri(table: &str) -> SimpleTerm<'static> {
     )
 }
 
+fn sanitize_name(name: &str) -> String {
+    let s: String = name
+        .chars()
+        .map(|c| if c.is_ascii_alphanumeric() || c == '-' { c } else { '_' })
+        .collect();
+    let s = s.replace("__", "_");
+    s.trim_matches('_').to_string()
+}
+
 fn column_iri(table: &str, column: &str) -> SimpleTerm<'static> {
     SimpleTerm::Iri(
         sophia::api::term::IriRef::new_unchecked(
-            format!("{}{}#{}", BASE_IRI, table, column).into(),
+            format!("{}{}#{}", BASE_IRI, table, sanitize_name(column)).into(),
         ),
     )
 }
@@ -90,7 +99,7 @@ fn column_iri(table: &str, column: &str) -> SimpleTerm<'static> {
 fn ref_iri(table: &str, fk_col: &str) -> SimpleTerm<'static> {
     SimpleTerm::Iri(
         sophia::api::term::IriRef::new_unchecked(
-            format!("{}{}#ref-{}", BASE_IRI, table, fk_col).into(),
+            format!("{}{}#ref-{}", BASE_IRI, table, sanitize_name(fk_col)).into(),
         ),
     )
 }