feat: enhance entity profile saving with PPID generation and backward compatibility

frontend/public/schemas/20251121/linkml/manifest.json

@@ -1,12 +1,12 @@
 {
-  "generated": "2026-01-16T23:08:40.251Z",
+  "generated": "2026-01-17T00:26:58.892Z",
   "schemaRoot": "/schemas/20251121/linkml",
-  "totalFiles": 2995,
+  "totalFiles": 2986,
   "categoryCounts": {
     "main": 4,
-    "class": 844,
+    "class": 847,
     "enum": 153,
-    "slot": 1990,
+    "slot": 1978,
     "module": 4
   },
   "categories": [
@@ -3410,6 +3410,21 @@
           "path": "modules/classes/SubsidiaryOrganization.yaml",
           "category": "class"
         },
+        {
+          "name": "Supplier",
+          "path": "modules/classes/Supplier.yaml",
+          "category": "class"
+        },
+        {
+          "name": "SupplierType",
+          "path": "modules/classes/SupplierType.yaml",
+          "category": "class"
+        },
+        {
+          "name": "SupplierTypes",
+          "path": "modules/classes/SupplierTypes.yaml",
+          "category": "class"
+        },
         {
           "name": "Tag",
           "path": "modules/classes/Tag.yaml",
@@ -9362,6 +9377,11 @@
           "path": "modules/slots/has_or_had_generate.yaml",
           "category": "slot"
         },
+        {
+          "name": "has_or_had_geographic_subdivision",
+          "path": "modules/slots/has_or_had_geographic_subdivision.yaml",
+          "category": "slot"
+        },
         {
           "name": "has_or_had_head",
           "path": "modules/slots/has_or_had_head.yaml",
@@ -9922,11 +9942,21 @@
           "path": "modules/slots/has_or_had_sub_section.yaml",
           "category": "slot"
         },
+        {
+          "name": "has_or_had_subject",
+          "path": "modules/slots/has_or_had_subject.yaml",
+          "category": "slot"
+        },
         {
           "name": "has_or_had_suborganization",
           "path": "modules/slots/has_or_had_suborganization.yaml",
           "category": "slot"
         },
+        {
+          "name": "has_or_had_supplier",
+          "path": "modules/slots/has_or_had_supplier.yaml",
+          "category": "slot"
+        },
         {
           "name": "has_or_had_symbol",
           "path": "modules/slots/has_or_had_symbol.yaml",
@@ -10902,6 +10932,11 @@
           "path": "modules/slots/is_or_was_succeeded_by.yaml",
           "category": "slot"
         },
+        {
+          "name": "is_or_was_superseded_by",
+          "path": "modules/slots/is_or_was_superseded_by.yaml",
+          "category": "slot"
+        },
         {
           "name": "is_or_was_tax_deductible",
           "path": "modules/slots/is_or_was_tax_deductible.yaml",
@@ -14802,71 +14837,11 @@
           "path": "modules/slots/status_name.yaml",
           "category": "slot"
         },
-        {
-          "name": "stewardship_model",
-          "path": "modules/slots/stewardship_model.yaml",
-          "category": "slot"
-        },
-        {
-          "name": "stewardship_responsibility",
-          "path": "modules/slots/stewardship_responsibility.yaml",
-          "category": "slot"
-        },
         {
           "name": "stores_or_stored",
           "path": "modules/slots/stores_or_stored.yaml",
           "category": "slot"
         },
-        {
-          "name": "street_address",
-          "path": "modules/slots/street_address.yaml",
-          "category": "slot"
-        },
-        {
-          "name": "street_name",
-          "path": "modules/slots/street_name.yaml",
-          "category": "slot"
-        },
-        {
-          "name": "sub_guide_temporal_coverage",
-          "path": "modules/slots/sub_guide_temporal_coverage.yaml",
-          "category": "slot"
-        },
-        {
-          "name": "subdivision_name",
-          "path": "modules/slots/subdivision_name.yaml",
-          "category": "slot"
-        },
-        {
-          "name": "subject_area",
-          "path": "modules/slots/subject_area.yaml",
-          "category": "slot"
-        },
-        {
-          "name": "subject_depicted",
-          "path": "modules/slots/subject_depicted.yaml",
-          "category": "slot"
-        },
-        {
-          "name": "subregion",
-          "path": "modules/slots/subregion.yaml",
-          "category": "slot"
-        },
-        {
-          "name": "succeeded_by",
-          "path": "modules/slots/succeeded_by.yaml",
-          "category": "slot"
-        },
-        {
-          "name": "successor_portal",
-          "path": "modules/slots/successor_portal.yaml",
-          "category": "slot"
-        },
-        {
-          "name": "supersede",
-          "path": "modules/slots/supersede.yaml",
-          "category": "slot"
-        },
         {
           "name": "supersede_articles",
           "path": "modules/slots/supersede_articles.yaml",
@@ -14883,28 +14858,8 @@
           "category": "slot"
         },
         {
-          "name": "superseded_by",
-          "path": "modules/slots/superseded_by.yaml",
-          "category": "slot"
-        },
-        {
-          "name": "supplier_relationship",
-          "path": "modules/slots/supplier_relationship.yaml",
-          "category": "slot"
-        },
-        {
-          "name": "supported_format",
-          "path": "modules/slots/supported_format.yaml",
-          "category": "slot"
-        },
-        {
-          "name": "supported_metadata_standard",
-          "path": "modules/slots/supported_metadata_standard.yaml",
-          "category": "slot"
-        },
-        {
-          "name": "table_of_content",
-          "path": "modules/slots/table_of_content.yaml",
+          "name": "supersedes_or_superseded",
+          "path": "modules/slots/supersedes_or_superseded.yaml",
           "category": "slot"
         },
         {

frontend/public/schemas/20251121/linkml/modules/classes/AcademicArchive.yaml

@@ -78,9 +78,10 @@ classes:
         equals_expression: '["hc:UniversityAdministrativeFonds", "hc:StudentRecordSeries", "hc:FacultyPaperCollection", "hc:CampusDocumentationCollection"]
 
           '
-      wikidata_entity:
+      has_or_had_identifier:  # was: wikidata_entity - migrated per Rule 53 (2026-01-16)
         pattern: ^Q[0-9]+$
         equals_string: Q27032435
+        description: Wikidata identifier for Academic Archive concept
       has_or_had_custodian_type:
         equals_expression: '["hc:ArchiveOrganizationType"]'
       is_or_was_related_to:  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)

frontend/public/schemas/20251121/linkml/modules/classes/AcademicArchiveRecordSetType.yaml

@@ -54,8 +54,6 @@ classes:
     - literal_form: academisch archiefbestand
       in_language: nl
     slot_usage:
-      wikidata_equivalent:
-        equals_string: Q27032435
       has_or_had_custodian_type:
         equals_expression: '["hc:ArchiveOrganizationType"]'
       is_or_was_related_to:  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)
@@ -65,9 +63,10 @@ classes:
         range: DualClassLink
         inlined: true
     exact_mappings:
-    - rico:RecordSetType
+      - wd:Q27032435  # Wikidata (was: slot_usage wikidata_equivalent - migrated per Rule 53, 2026-01-17)
+      - rico:RecordSetType
     broad_mappings:
-    - wd:Q27032435
+      - wd:Q27032435
     close_mappings:
     - skos:Concept
     see_also:

frontend/public/schemas/20251121/linkml/modules/classes/ActivityTypes.yaml

@@ -6,6 +6,7 @@
 #
 # Generation date: 2026-01-13
 # Rule compliance: 0b (Type/Types naming), 37 (specificity scores), 50 (ontology mapping)
+# Migration: 2026-01-16 - wikidata_entity → wikidata_equivalent per Rule 53
 
 id: https://nde.nl/ontology/hc/class/ActivityTypes
 name: ActivityTypes
@@ -19,6 +20,7 @@ prefixes:
   prov: http://www.w3.org/ns/prov#
   schema: http://schema.org/
   aat: http://vocab.getty.edu/aat/
+  wd: http://www.wikidata.org/entity/  # Added for Wikidata mappings (2026-01-17)
 
 default_prefix: hc
 
@@ -50,12 +52,12 @@ classes:
       **SPECTRUM Alignment**: Maps to SPECTRUM primary procedures
     exact_mappings:
       - crm:E87_Curation_Activity
+      - wd:Q1348059  # Wikidata: curation (was: annotation wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     close_mappings:
       - aat:300054277  # activities (functions)
     annotations:
       activity_category: CURATION
       spectrum_procedures: "inventory, cataloguing, acquisition, deaccession-and-disposal"
-      wikidata_entity: Q1348059
   
   # ===========================================================================
   # CONSERVATION ACTIVITY TYPES
@@ -81,12 +83,12 @@ classes:
       **SPECTRUM Alignment**: Maps to SPECTRUM condition checking and collections care
     exact_mappings:
       - crm:E11_Modification
+      - wd:Q217102  # Wikidata: conservation (was: annotation wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     close_mappings:
       - aat:300053803  # conservation (activity)
     annotations:
       activity_category: CONSERVATION
       spectrum_procedures: "condition-checking, collections-care, conservation-assessment"
-      wikidata_entity: Q217102
   
   # ===========================================================================
   # COMMERCIAL ACTIVITY TYPES
@@ -113,11 +115,11 @@ classes:
       **Note**: Distinct from non-commercial educational or public service activities.
     exact_mappings:
       - schema:TradeAction
+      - wd:Q601401  # Wikidata: commerce (was: annotation wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     close_mappings:
       - aat:300055704  # commerce
     annotations:
       activity_category: COMMERCIAL
-      wikidata_entity: Q601401
   
   # ===========================================================================
   # RESEARCH ACTIVITY TYPES
@@ -144,13 +146,13 @@ classes:
       **CIDOC-CRM**: Maps to E13_Attribute_Assignment for research outcomes
     exact_mappings:
       - crm:E7_Activity
+      - wd:Q42240  # Wikidata: research (was: annotation wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     close_mappings:
       - aat:300054608  # research (activity)
     related_mappings:
       - crm:E13_Attribute_Assignment
     annotations:
       activity_category: RESEARCH
-      wikidata_entity: Q42240
   
   # ===========================================================================
   # EDUCATION ACTIVITY TYPES
@@ -178,11 +180,11 @@ classes:
       **Schema.org**: Maps to EducationEvent for structured data
     exact_mappings:
       - schema:EducationEvent
+      - wd:Q8434  # Wikidata: education (was: annotation wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     close_mappings:
       - aat:300054552  # education (activity)
     annotations:
       activity_category: EDUCATION
-      wikidata_entity: Q8434
   
   # ===========================================================================
   # EXHIBITION ACTIVITY TYPES
@@ -208,13 +210,13 @@ classes:
       **Schema.org**: Maps to ExhibitionEvent for structured data
     exact_mappings:
       - schema:ExhibitionEvent
+      - wd:Q464980  # Wikidata: exhibition (was: annotation wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     close_mappings:
       - aat:300054766  # exhibitions (events)
     related_mappings:
       - crm:E7_Activity
     annotations:
       activity_category: EXHIBITION
-      wikidata_entity: Q464980
   
   # ===========================================================================
   # DIGITIZATION ACTIVITY TYPES
@@ -242,11 +244,11 @@ classes:
       **CIDOC-CRM**: E65_Creation for creation of digital surrogates
     exact_mappings:
       - crm:E65_Creation
+      - wd:Q1116930  # Wikidata: digitization (was: annotation wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     close_mappings:
       - aat:300266022  # digitization
     annotations:
       activity_category: DIGITIZATION
-      wikidata_entity: Q1116930
   
   # ===========================================================================
   # ADMINISTRATIVE ACTIVITY TYPES
@@ -274,12 +276,12 @@ classes:
       **SPECTRUM Alignment**: Maps to SPECTRUM audit, valuation, loans procedures
     exact_mappings:
       - prov:Activity
+      - wd:Q18643507  # Wikidata: administrative activity (was: annotation wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     close_mappings:
       - aat:300055709  # administration
     annotations:
       activity_category: ADMINISTRATIVE
       spectrum_procedures: "audit, valuation, loans-out, loans-in, rights-management"
-      wikidata_entity: Q18643507
   
   # ===========================================================================
   # ACQUISITION ACTIVITY TYPES
@@ -306,12 +308,12 @@ classes:
       **SPECTRUM Alignment**: Maps to SPECTRUM acquisition procedure
     exact_mappings:
       - crm:E8_Acquisition
+      - wd:Q17157817  # Wikidata: acquisition (was: annotation wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     close_mappings:
       - aat:300055711  # acquisition (activity)
     annotations:
       activity_category: ACQUISITION
       spectrum_procedures: "acquisition"
-      wikidata_entity: Q17157817
   
   # ===========================================================================
   # MEMBERSHIP ACTIVITY TYPES
@@ -336,11 +338,11 @@ classes:
       **Schema.org**: Maps to JoinAction for joining organizations
     exact_mappings:
       - schema:JoinAction
+      - wd:Q1141470  # Wikidata: membership (was: annotation wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     close_mappings:
       - schema:OrganizationRole
     annotations:
       activity_category: MEMBERSHIP
-      wikidata_entity: Q1141470
   
   # ===========================================================================
   # LOAN ACTIVITY TYPES
@@ -365,9 +367,9 @@ classes:
       **SPECTRUM Alignment**: Maps to SPECTRUM loans-out and loans-in procedures
     exact_mappings:
       - crm:E10_Transfer_of_Custody
+      - wd:Q1332755  # Wikidata: loan (was: annotation wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     close_mappings:
       - aat:300312155  # loaning
     annotations:
       activity_category: LOAN
       spectrum_procedures: "loans-out, loans-in"
-      wikidata_entity: Q1332755

frontend/public/schemas/20251121/linkml/modules/classes/Address.yaml

@@ -24,8 +24,9 @@ imports:
   - ../slots/address_type
   # Address component slots
   - ../slots/house_number
-  - ../slots/street_name
-  - ../slots/street_address
+  # REMOVED: ../slots/street_name - migrated to has_or_had_label + Label (2026-01-17, Rule 53/56)
+  # REMOVED: ../slots/street_address - migrated to has_or_had_address + Address class (2026-01-17, Rule 53/56)
+  #   street_address was a redundant string slot; full Address class captures street data via components
   - ../slots/postal_code
   - ../slots/locality
   - ../slots/city
@@ -74,14 +75,16 @@ classes:
       ```
       Address
       ├── house_number      (e.g., "1", "221B", "25-27")
-      ├── street_name       (e.g., "Museumstraat")
-      ├── street_address    (combined: "Museumstraat 1")
+      ├── has_or_had_label  (street name as Label, e.g., "Museumstraat")
       ├── postal_code       (e.g., "1071 XX")
       ├── locality          (e.g., "Amsterdam")
       ├── region            (e.g., "Noord-Holland", "NL-NH")
       ├── country_name      (e.g., "Netherlands", "NL")
-      └── address_formatted (full string representation)
+      └── has_or_had_label  (formatted address as Label)
       ```
+      
+      NOTE: street_name slot migrated to has_or_had_label + Label (2026-01-17, Rule 53/56)
+      NOTE: street_address slot removed - was redundant string; use house_number + has_or_had_label (2026-01-17, Rule 53/56)
 
       **ADDRESS TYPES FOR HERITAGE CUSTODIANS**:
 
@@ -104,7 +107,9 @@ classes:
 
       # Structured address with components
       has_or_had_address:
-        - street_name: "Museumstraat"
+        - has_or_had_label:
+            - has_or_had_label: "Museumstraat"
+              language: "nl"
           house_number: "1"
           postal_code: "1071 XX"
           locality: "Amsterdam"
@@ -143,8 +148,8 @@ classes:
     slots:
       # Street-level components
       - house_number
-      - street_name
-      - street_address
+      # REMOVED: street_name - migrated to has_or_had_label + Label (2026-01-17, Rule 53/56)
+      # REMOVED: street_address - redundant string slot; use house_number + has_or_had_label (2026-01-17, Rule 53/56)
       # Postal components
       - postal_code
       # Locality/geographic hierarchy
@@ -173,20 +178,10 @@ classes:
             description: Rijksmuseum
           - value: "221B"
             description: Baker Street notation
-      street_name:
-        range: string
-        required: false
-        description: Name of street, road, or thoroughfare
-        examples:
-          - value: "Museumstraat"
-            description: Museum Street in Amsterdam
-      street_address:
-        range: string
-        required: false
-        description: Combined street address (name + number)
-        examples:
-          - value: "Museumstraat 1"
-            description: Full street address
+      # REMOVED: street_name slot_usage - migrated to has_or_had_label + Label (2026-01-17, Rule 53/56)
+      # Street names should now use Label class with language tagging via has_or_had_label
+      # REMOVED: street_address slot_usage - redundant string slot removed (2026-01-17, Rule 53/56)
+      # Use house_number + has_or_had_label (street name as Label) instead of combined string
       postal_code:
         range: string
         required: false
@@ -235,20 +230,29 @@ classes:
           - value: "Museumstraat 1, 1071 XX Amsterdam, Netherlands"
             description: Complete formatted address
       has_or_had_label:
-        range: string
+        range: Label
         required: false
-        multivalued: false
+        multivalued: true
+        inlined: true
         description: |
-          Full formatted address as a single human-readable string.
-          MIGRATED from address_formatted (2026-01-13).
+          Labeled representations of address components or the full formatted address.
+          MIGRATED from address_formatted and street_name (2026-01-17).
           
-          Use for:
-          - Display/presentation purposes
-          - When structured components are unavailable
-          - Geocoding input/output addresses
+          Use Label class with language tagging to support:
+          - Full formatted address strings
+          - Street/thoroughfare names (migrated from street_name slot per Rule 53/56)
+          - Other labeled address components requiring language tagging
+          
+          For street names, use Label with appropriate type annotation.
         examples:
-          - value: "Museumstraat 1, 1071 XX Amsterdam, Netherlands"
+          - value: |
+              has_or_had_label: "Museumstraat 1, 1071 XX Amsterdam, Netherlands"
+              language: "nl"
             description: Complete formatted address
+          - value: |
+              has_or_had_label: "Museumstraat"
+              language: "nl"
+            description: Street name as Label (migrated from street_name)
       address_type:
         range: string
         required: false
@@ -321,30 +325,40 @@ classes:
     examples:
       - value:
           house_number: "1"
-          street_name: "Museumstraat"
-          street_address: "Museumstraat 1"
+          has_or_had_label:
+            - has_or_had_label: "Museumstraat"
+              language: "nl"
+            - has_or_had_label: "Museumstraat 1, 1071 XX Amsterdam, Netherlands"
+              language: "nl"
+          # REMOVED: street_address - migrated to house_number + has_or_had_label (2026-01-17, Rule 53/56)
           postal_code: "1071 XX"
           locality: "Amsterdam"
           region: "Noord-Holland"
           country_name: "NL"
-          address_formatted: "Museumstraat 1, 1071 XX Amsterdam, Netherlands"
           address_type: "HEADQUARTERS"
           latitude: 52.3600
           longitude: 4.8852
           geonames_id: 2759794
-        description: Rijksmuseum headquarters - fully structured address
+        description: Rijksmuseum headquarters - fully structured address (street_name and street_address migrated to has_or_had_label)
 
       - value:
-          street_address: "Jansstraat 40"
+          house_number: "40"
+          has_or_had_label:
+            - has_or_had_label: "Jansstraat"
+              language: "nl"
+            - has_or_had_label: "Jansstraat 40, 2011 RX Haarlem, Netherlands"
+              language: "nl"
+          # REMOVED: street_address - migrated to house_number + has_or_had_label (2026-01-17, Rule 53/56)
           postal_code: "2011 RX"
           locality: "Haarlem"
           country_name: "NL"
-          address_formatted: "Jansstraat 40, 2011 RX Haarlem, Netherlands"
           address_type: "HEADQUARTERS"
         description: Noord-Hollands Archief address - simplified structure
 
       - value:
-          address_formatted: "1600 Pennsylvania Avenue NW, Washington, DC 20500, USA"
+          has_or_had_label:
+            - has_or_had_label: "1600 Pennsylvania Avenue NW, Washington, DC 20500, USA"
+              language: "en"
           locality: "Washington"
           region: "DC"
           country_name: "US"
@@ -352,14 +366,18 @@ classes:
         description: US address with formatted string primary
 
       - value:
-          street_name: "Euterpelaan"
+          has_or_had_label:
+            - has_or_had_label: "Euterpelaan"
+              language: "nl"
+            - has_or_had_label: "Euterpelaan 25, 3824 BK Amersfoort, Netherlands"
+              language: "nl"
           house_number: "25"
           postal_code: "3824 BK"
           locality: "Amersfoort"
           region: "Utrecht"
           country_name: "NL"
           address_type: "STORAGE"
-        description: Off-site storage depot address
+        description: Off-site storage depot address (street_name and street_address migrated to has_or_had_label)
 
     annotations:
       specificity_score: 0.25

frontend/public/schemas/20251121/linkml/modules/classes/AdvertisingRadioArchive.yaml

@@ -18,14 +18,7 @@ imports:
   - ./WikidataAlignment
   - ./WikiDataEntry  # for is_or_was_related_to range (2026-01-15)
   - ./AdvertisingRadioArchiveRecordSetType
-  - ../slots/hold_or_held_record_set_type
-  - ../slots/specificity_annotation
-  - ../slots/template_specificity
-  - ../slots/wikidata_entity
-  - ../slots/hold_or_held_record_set_type
-  - ../slots/specificity_annotation
-  - ../slots/template_specificity
-  - ../slots/wikidata_entity
+  # wikidata_entity import REMOVED - inherits has_or_had_identifier from ArchiveOrganizationType (Rule 53, 2026-01-16)
 classes:
   AdvertisingRadioArchive:
     is_a: ArchiveOrganizationType
@@ -63,9 +56,10 @@ classes:
 
       '
     slot_usage:
-      wikidata_entity:
+      has_or_had_identifier:  # was: wikidata_entity - migrated per Rule 53 (2026-01-16)
         pattern: ^Q[0-9]+$
         equals_string: Q60658673
+        description: Wikidata identifier for Advertising Radio Archive concept
     exact_mappings:
     - skos:Concept
     close_mappings:

frontend/public/schemas/20251121/linkml/modules/classes/AdvertisingRadioArchiveRecordSetType.yaml

@@ -3,6 +3,7 @@ name: AdvertisingRadioArchiveRecordSetType
 title: AdvertisingRadioArchive Record Set Type
 prefixes:
   linkml: https://w3id.org/linkml/
+  wd: http://www.wikidata.org/entity/
 imports:
   - linkml:types
   - ./CollectionType
@@ -15,16 +16,15 @@ imports:
   - ../slots/is_or_was_related_to
   - ../slots/specificity_annotation
   - ../slots/template_specificity
-  - ../slots/wikidata_equivalent
 classes:
   AdvertisingRadioArchiveRecordSetType:
     description: A rico:RecordSetType for classifying collections of advertising radio  productions and commercials within
       heritage institutions.
     is_a: CollectionType
     class_uri: rico:RecordSetType
+    exact_mappings:
+      - wd:Q60658673  # Wikidata (was: slot_usage wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     slot_usage:
-      wikidata_equivalent:
-        equals_string: Q60658673
       has_or_had_custodian_type:
         equals_expression: '["hc:ArchiveOrganizationType"]'
       is_or_was_related_to:  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)

frontend/public/schemas/20251121/linkml/modules/classes/AnimalSoundArchive.yaml

@@ -18,14 +18,7 @@ imports:
   - ./WikidataAlignment
   - ./WikiDataEntry  # for is_or_was_related_to range (2026-01-15)
   - ./AnimalSoundArchiveRecordSetType
-  - ../slots/hold_or_held_record_set_type
-  - ../slots/specificity_annotation
-  - ../slots/template_specificity
-  - ../slots/wikidata_entity
-  - ../slots/hold_or_held_record_set_type
-  - ../slots/specificity_annotation
-  - ../slots/template_specificity
-  - ../slots/wikidata_entity
+  # wikidata_entity import REMOVED - inherits has_or_had_identifier from ArchiveOrganizationType (Rule 53, 2026-01-16)
 classes:
   AnimalSoundArchive:
     is_a: ArchiveOrganizationType
@@ -87,9 +80,10 @@ classes:
 
       '
     slot_usage:
-      wikidata_entity:
+      has_or_had_identifier:  # was: wikidata_entity - migrated per Rule 53 (2026-01-16)
         pattern: ^Q[0-9]+$
         equals_string: Q18574935
+        description: Wikidata identifier for Animal Sound Archive concept
     exact_mappings:
     - skos:Concept
     close_mappings:

frontend/public/schemas/20251121/linkml/modules/classes/AnimalSoundArchiveRecordSetType.yaml

@@ -3,6 +3,7 @@ name: AnimalSoundArchiveRecordSetType
 title: AnimalSoundArchive Record Set Type
 prefixes:
   linkml: https://w3id.org/linkml/
+  wd: http://www.wikidata.org/entity/
 imports:
   - linkml:types
   - ./CollectionType
@@ -15,15 +16,14 @@ imports:
   - ../slots/is_or_was_related_to
   - ../slots/specificity_annotation
   - ../slots/template_specificity
-  - ../slots/wikidata_equivalent
 classes:
   AnimalSoundArchiveRecordSetType:
     description: A rico:RecordSetType for classifying collections of animal sound archive materials within heritage institutions.
     is_a: CollectionType
     class_uri: rico:RecordSetType
+    exact_mappings:
+      - wd:Q18574935  # Wikidata (was: slot_usage wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     slot_usage:
-      wikidata_equivalent:
-        equals_string: Q18574935
       has_or_had_custodian_type:
         equals_expression: '["hc:ArchiveOrganizationType"]'
       is_or_was_related_to:  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)

frontend/public/schemas/20251121/linkml/modules/classes/ArchitecturalArchive.yaml

@@ -18,16 +18,7 @@ imports:
   - ./WikidataAlignment
   - ./WikiDataEntry  # for is_or_was_related_to range (2026-01-15)
   - ./ArchitecturalArchiveRecordSetType
-  - ../slots/has_or_had_custodian_type
-  - ../slots/hold_or_held_record_set_type
-  - ../slots/specificity_annotation
-  - ../slots/template_specificity
-  - ../slots/wikidata_entity
-  - ../slots/has_or_had_custodian_type
-  - ../slots/hold_or_held_record_set_type
-  - ../slots/specificity_annotation
-  - ../slots/template_specificity
-  - ../slots/wikidata_entity
+  # wikidata_entity import REMOVED - inherits has_or_had_identifier from ArchiveOrganizationType (Rule 53, 2026-01-16)
 classes:
   ArchitecturalArchive:
     is_a: ArchiveOrganizationType
@@ -50,9 +41,10 @@ classes:
       \ (as agent)\n\n**Multilingual Labels**:\n- de: Architekturarchiv\n- fr: archives architecturales\n- nl: architectonisch\
       \ archief\n"
     slot_usage:
-      wikidata_entity:
+      has_or_had_identifier:  # was: wikidata_entity - migrated per Rule 53 (2026-01-16)
         pattern: ^Q[0-9]+$
         equals_string: Q121409581
+        description: Wikidata identifier for Architectural Archive concept
       has_or_had_custodian_type:
         equals_expression: '["hc:ArchiveOrganizationType"]'
     exact_mappings:

frontend/public/schemas/20251121/linkml/modules/classes/ArchitecturalArchiveRecordSetType.yaml

@@ -3,6 +3,7 @@ name: ArchitecturalArchiveRecordSetType
 title: ArchitecturalArchive Record Set Type
 prefixes:
   linkml: https://w3id.org/linkml/
+  wd: http://www.wikidata.org/entity/
 imports:
   - linkml:types
   - ./CollectionType
@@ -13,15 +14,14 @@ imports:
   - ../slots/is_or_was_related_to
   - ../slots/specificity_annotation
   - ../slots/template_specificity
-  - ../slots/wikidata_equivalent
 classes:
   ArchitecturalArchiveRecordSetType:
     description: A rico:RecordSetType for classifying collections of architectural archive materials within heritage institutions.
     is_a: CollectionType
     class_uri: rico:RecordSetType
+    exact_mappings:
+      - wd:Q121409581  # Wikidata (was: slot_usage wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     slot_usage:
-      wikidata_equivalent:
-        equals_string: Q121409581
       is_or_was_related_to:  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)
         range: WikidataAlignment
         inlined: true

frontend/public/schemas/20251121/linkml/modules/classes/ArchivalLibraryRecordSetType.yaml

@@ -6,6 +6,7 @@ prefixes:
   schema: http://schema.org/
   skos: http://www.w3.org/2004/02/skos/core#
   rico: https://www.ica.org/standards/RiC/ontology#
+  wd: http://www.wikidata.org/entity/
 imports:
   - linkml:types
   - ./CollectionType
@@ -16,15 +17,14 @@ imports:
   - ../slots/is_or_was_related_to
   - ../slots/specificity_annotation
   - ../slots/template_specificity
-  - ../slots/wikidata_equivalent
 classes:
   ArchivalLibraryRecordSetType:
     description: A rico:RecordSetType for classifying collections of archival library materials within heritage institutions.
     is_a: CollectionType
     class_uri: rico:RecordSetType
+    exact_mappings:
+      - wd:Q25504402  # Wikidata (was: slot_usage wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     slot_usage:
-      wikidata_equivalent:
-        equals_string: Q25504402
       is_or_was_related_to:  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)
         range: WikidataAlignment
         inlined: true

frontend/public/schemas/20251121/linkml/modules/classes/ArchiveAssociation.yaml

@@ -12,16 +12,9 @@ imports:
   - ./SpecificityAnnotation
   - ./TemplateSpecificityScores
   - ../slots/society_focus
-  - ../slots/has_or_had_custodian_type
-  - ../slots/society_focus
-  - ../slots/specificity_annotation
-  - ../slots/template_specificity
-  - ../slots/wikidata_entity
-  - ../slots/has_or_had_custodian_type
-  - ../slots/society_focus
-  - ../slots/specificity_annotation
-  - ../slots/template_specificity
-  - ../slots/wikidata_entity
+  # wikidata_entity import REMOVED - migrated to has_or_had_identifier (Rule 53, 2026-01-16)
+  - ../slots/has_or_had_identifier  # was: wikidata_entity - migrated per Rule 53 (2026-01-16)
+  - ./WikiDataIdentifier  # for has_or_had_identifier range
 classes:
   ArchiveAssociation:
     is_a: HeritageSocietyType
@@ -46,9 +39,10 @@ classes:
     slot_usage:
       society_focus:
         required: true
-      wikidata_entity:
+      has_or_had_identifier:  # was: wikidata_entity - migrated per Rule 53 (2026-01-16)
         pattern: ^Q[0-9]+$
         equals_string: Q130427366
+        description: Wikidata identifier for Archive Association concept
       has_or_had_custodian_type:
         equals_expression: '["hc:ArchiveOrganizationType", "hc:HeritageSocietyType"]'
     exact_mappings:
@@ -69,3 +63,4 @@ classes:
     - has_or_had_custodian_type
     - specificity_annotation
     - template_specificity
+    - has_or_had_identifier  # was: wikidata_entity - migrated per Rule 53 (2026-01-16)

frontend/public/schemas/20251121/linkml/modules/classes/AuxiliaryPlace.yaml

@@ -13,6 +13,7 @@ imports:
   - ./Subregion
   - ./Settlement
   - ./TimeSpan
+  - ./Address  # Added for has_or_had_address range (2026-01-17, Rule 53/56 migration)
   - ../enums/AuxiliaryPlaceTypeEnum
   - ./ReconstructedEntity
   - ./BranchOffice
@@ -36,7 +37,7 @@ imports:
   - ../slots/geonames_id
   - ../slots/latitude
   - ../slots/longitude
-  - ../slots/street_address
+  - ../slots/has_or_had_address  # was: street_address - migrated to Address class per Rule 53/56 (2026-01-17)
   - ../slots/postal_code
   - ../slots/city
   - ../slots/has_or_had_identifier
@@ -50,7 +51,7 @@ imports:
   - ../slots/settlement
   - ../slots/specialized_place
   - ../slots/specificity_annotation
-  - ../slots/subregion
+  - ../slots/has_or_had_geographic_subdivision  # was: subregion - migrated per Rule 53/56 (2026-01-17)
   - ../slots/template_specificity
   - ../slots/temporal_extent  # consolidated: absorbs valid_from + valid_to per Rule 53
   # REMOVED 2026-01-14: valid_from + valid_to - migrated to temporal_extent (Rule 53)
@@ -135,8 +136,8 @@ classes:
     - settlement
     - specialized_place
     - specificity_annotation
-    - street_address
-    - subregion
+    - has_or_had_address  # was: street_address - migrated to Address class per Rule 53/56 (2026-01-17)
+    - has_or_had_geographic_subdivision  # was: subregion - migrated per Rule 53/56 (2026-01-17)
     - template_specificity
     - temporal_extent  # consolidated: absorbs valid_from + valid_to per Rule 53
     - is_or_was_derived_from  # was: was_derived_from - migrated per Rule 53
@@ -191,13 +192,32 @@ classes:
         examples:
         - value: Off-site storage facility housing overflow collections. Staff access only.
           description: Depot description
-      street_address:
-        range: string
+      has_or_had_address:  # was: street_address - migrated to Address class per Rule 53/56 (2026-01-17)
+        range: Address
+        multivalued: true
+        inlined_as_list: true
+        required: false
+        description: |
+          Physical address(es) for this auxiliary place.
+          MIGRATED from street_address (string) to full Address class (2026-01-17, Rule 53/56).
+          Provides richer address modeling with components, geocoding, and provenance.
         examples:
-        - value: Euterpelaan 25
-          description: Street address
-        - value: Schiphol Airport, Lounge 2, Holland Boulevard
-          description: Airport location
+        - value:
+            has_or_had_label:
+              - has_or_had_label: "Euterpelaan 25, 3824 BK Amersfoort, Netherlands"
+                language: "nl"
+            house_number: "25"
+            postal_code: "3824 BK"
+            locality: "Amersfoort"
+            country_name: "NL"
+          description: Depot street address as full Address object
+        - value:
+            has_or_had_label:
+              - has_or_had_label: "Schiphol Airport, Holland Boulevard, Lounge 2"
+                language: "en"
+            locality: "Schiphol"
+            country_name: "NL"
+          description: Airport location as Address object
       postal_code:
         range: string
         examples:
@@ -213,7 +233,7 @@ classes:
         examples:
         - value: https://nde.nl/ontology/hc/country/NL
           description: Netherlands
-      subregion:
+      has_or_had_geographic_subdivision:  # was: subregion - migrated per Rule 53/56 (2026-01-17)
         range: Subregion
         examples:
         - value: https://nde.nl/ontology/hc/subregion/NL-UT
@@ -332,11 +352,16 @@ classes:
         place_name: Depot Amersfoort
         auxiliary_place_type: STORAGE_FACILITY
         place_description: Off-site storage facility for overflow collections. Climate-controlled. Staff access only.
-        street_address: Euterpelaan 25
-        postal_code: 3824 BK
-        city: Amersfoort
+        has_or_had_address:  # was: street_address - migrated to Address class per Rule 53/56 (2026-01-17)
+          - has_or_had_label:
+              - has_or_had_label: "Euterpelaan 25, 3824 BK Amersfoort, Netherlands"
+                language: "nl"
+            house_number: "25"
+            postal_code: "3824 BK"
+            locality: "Amersfoort"
+            country_name: "NL"
         country: https://nde.nl/ontology/hc/country/NL
-        subregion: https://nde.nl/ontology/hc/subregion/NL-UT
+        has_or_had_geographic_subdivision: https://nde.nl/ontology/hc/subregion/NL-UT  # was: subregion - migrated per Rule 53/56 (2026-01-17)
         latitude: 52.1561
         longitude: 5.3878
         valid_from: '1995-06-01'
@@ -348,7 +373,12 @@ classes:
         place_name: Rijksmuseum Schiphol
         auxiliary_place_type: BRANCH_OFFICE
         place_description: Small exhibition space at Schiphol Airport featuring rotating highlights from the collection.
-        street_address: Schiphol Airport, Holland Boulevard, Lounge 2
+        has_or_had_address:  # was: street_address - migrated to Address class per Rule 53/56 (2026-01-17)
+          - has_or_had_label:
+              - has_or_had_label: "Schiphol Airport, Holland Boulevard, Lounge 2"
+                language: "en"
+            locality: "Schiphol"
+            country_name: "NL"
         city: Schiphol
         country: https://nde.nl/ontology/hc/country/NL
         valid_from: '2002-10-01'
@@ -368,8 +398,14 @@ classes:
           annex_reason: PEAK_DEMAND
           capacity_seats: 12
         place_description: Overflow reading room for peak research periods.
-        street_address: Kleine Houtweg 20
-        postal_code: 2012 CH
+        has_or_had_address:  # was: street_address - migrated to Address class per Rule 53/56 (2026-01-17)
+          - has_or_had_label:
+              - has_or_had_label: "Kleine Houtweg 20, 2012 CH Haarlem, Netherlands"
+                language: "nl"
+            house_number: "20"
+            postal_code: "2012 CH"
+            locality: "Haarlem"
+            country_name: "NL"
         city: Haarlem
         valid_from: '2010-01-15'
         valid_to: '2018-06-30'

frontend/public/schemas/20251121/linkml/modules/classes/Collection.yaml

@@ -46,7 +46,7 @@ imports:
   - ../slots/provenance_statement
   - ../slots/record_set_type
   - ../slots/has_or_had_sub_collection
-  - ../slots/subject_area
+  - ../slots/is_or_was_categorized_as  # was: subject_area - migrated per Rule 53/56 (2026-01-17)
   - ../slots/has_or_had_content  # was: temporal_coverage - migrated per Rule 53/56 (2026-01-16)
   - ./Content
   - ../slots/temporal_extent  # was: valid_from + valid_to - migrated per Rule 53
@@ -124,7 +124,7 @@ classes:
     - record_set_type
     - specificity_annotation
     - has_or_had_sub_collection
-    - subject_area
+    - is_or_was_categorized_as  # was: subject_area - migrated per Rule 53/56 (2026-01-17)
     - template_specificity
     - has_or_had_content  # was: temporal_coverage - migrated per Rule 53/56 (2026-01-16)
     - temporal_extent  # was: valid_from + valid_to - migrated per Rule 53
@@ -201,7 +201,7 @@ classes:
               begin_of_the_begin: '1602-01-01'
               end_of_the_end: '1799-12-31'
           description: VOC records content with temporal coverage
-      subject_area:
+      is_or_was_categorized_as:  # was: subject_area - migrated per Rule 53/56 (2026-01-17)
         range: string
         multivalued: true
         examples:
@@ -368,7 +368,7 @@ classes:
           temporal_extent:
             begin_of_the_begin: '1602-01-01'
             end_of_the_end: '1799-12-31'
-        subject_area:
+        is_or_was_categorized_as:  # was: subject_area - migrated per Rule 53/56 (2026-01-17)
         - Colonial trade
         - Maritime history
         - Dutch East Indies

frontend/public/schemas/20251121/linkml/modules/classes/CollectionManagementSystem.yaml

@@ -28,7 +28,9 @@ imports:
   - ../slots/refers_to_custodian
   - ../slots/repository_url
   - ../slots/specificity_annotation
-  - ../slots/supported_metadata_standard
+  - ../slots/has_or_had_standard  # was: supported_metadata_standard - migrated per Rule 53/56 (2026-01-16)
+  - ./MetadataStandard
+  - ./MetadataStandardType
   - ../slots/template_specificity
   - ../slots/temporal_extent
   # REMOVED 2026-01-14: ../slots/used_by_custodian - migrated to is_or_was_used_by with Custodian
@@ -123,7 +125,7 @@ classes:
     - refers_to_custodian
     - repository_url
     - specificity_annotation
-    - supported_metadata_standard
+    - has_or_had_standard  # was: supported_metadata_standard - migrated per Rule 53/56 (2026-01-16)
     - template_specificity
     - temporal_extent
     # REMOVED 2026-01-14: used_by_custodian - migrated to is_or_was_used_by with Custodian
@@ -226,16 +228,32 @@ classes:
           description: CollectiveAccess GitHub repo
         - value: https://github.com/archivesspace/archivesspace
           description: ArchivesSpace GitHub repo
-      supported_metadata_standard:
-        range: string
+      # was: supported_metadata_standard - migrated per Rule 53/56 (2026-01-16)
+      has_or_had_standard:
+        range: MetadataStandard
         multivalued: true
+        inlined_as_list: true
+        description: |
+          Metadata standards supported by this CMS.
+          MIGRATED from supported_metadata_standard slot per slot_fixes.yaml (Rule 53/56, 2026-01-16).
+          
+          Uses MetadataStandard class for structured standard representation including:
+          - Standard name
+          - Standard URI
+          - Standard type
         examples:
-        - value: Dublin Core
-          description: Basic metadata standard
-        - value: LIDO
-          description: Museum object standard
-        - value: EAD
-          description: Archival description standard
+        - value:
+            standard_name: Dublin Core
+            standard_uri: http://purl.org/dc/elements/1.1/
+          description: Dublin Core metadata standard
+        - value:
+            standard_name: LIDO
+            standard_uri: http://www.lido-schema.org/
+          description: LIDO museum object standard
+        - value:
+            standard_name: EAD
+            standard_uri: http://www.loc.gov/ead/
+          description: Encoded Archival Description standard
       iiif_compatible:
         range: boolean
         examples:
@@ -320,7 +338,7 @@ classes:
     - http://www.cidoc-crm.org/cidoc-crm/E29_Design_or_Procedure
     - http://usefulinc.com/ns/doap#Project
     examples:
-    # Examples updated for migrated slots (Rule 53) - 2026-01-14
+    # Examples updated for migrated slots (Rule 53) - 2026-01-14, 2026-01-16
     - value:
         cms_id: https://nde.nl/ontology/hc/cms/rijksmuseum-adlib
         cms_product_name: Adlib
@@ -332,10 +350,14 @@ classes:
         has_or_had_url:  # was: vendor_url
           url_value: https://www.axiell.com/
           url_type: vendor
-        supported_metadata_standard:
-        - SPECTRUM
-        - Dublin Core
-        - LIDO
+        # was: supported_metadata_standard - migrated per Rule 53/56 (2026-01-16)
+        has_or_had_standard:
+        - standard_name: SPECTRUM
+          standard_uri: https://collectionstrust.org.uk/spectrum/
+        - standard_name: Dublin Core
+          standard_uri: http://purl.org/dc/elements/1.1/
+        - standard_name: LIDO
+          standard_uri: http://www.lido-schema.org/
         iiif_compatible: true
         linked_data_export: true
         is_or_was_available: true
@@ -363,10 +385,14 @@ classes:
         - JavaScript
         - MySQL
         repository_url: https://github.com/collectiveaccess/providence
-        supported_metadata_standard:
-        - Dublin Core
-        - VRA Core
-        - LIDO
+        # was: supported_metadata_standard - migrated per Rule 53/56 (2026-01-16)
+        has_or_had_standard:
+        - standard_name: Dublin Core
+          standard_uri: http://purl.org/dc/elements/1.1/
+        - standard_name: VRA Core
+          standard_uri: http://www.vraweb.org/vracore/
+        - standard_name: LIDO
+          standard_uri: http://www.lido-schema.org/
         iiif_compatible: true
         linked_data_export: true
         is_or_was_available: true
@@ -380,10 +406,14 @@ classes:
         open_source: false
         license: Proprietary
         has_or_had_label: De Ree Archiefsystemen  # was: vendor_name
-        supported_metadata_standard:
-        - ISAD(G)
-        - EAD
-        - MDTO
+        # was: supported_metadata_standard - migrated per Rule 53/56 (2026-01-16)
+        has_or_had_standard:
+        - standard_name: ISAD(G)
+          standard_uri: https://www.ica.org/en/isadg-general-international-standard-archival-description-second-edition
+        - standard_name: EAD
+          standard_uri: http://www.loc.gov/ead/
+        - standard_name: MDTO
+          standard_uri: https://www.nationaalarchief.nl/mdto
         iiif_compatible: false
         linked_data_export: false
         is_or_was_available: true

frontend/public/schemas/20251121/linkml/modules/classes/CourtRecords.yaml

@@ -94,7 +94,7 @@ classes:
     - value:
         type_id: https://nde.nl/ontology/hc/type/archive/Q11906844
         glamorcubesfixphdnt_code: ARCHIVE
-        wikidata_entity: Q11906844
+        has_or_had_identifier: Q11906844  # was: wikidata_entity - migrated per Rule 53 (2026-01-16)
         type_label:
         - Court Records Archive@en
         - Justizarchiv@de

frontend/public/schemas/20251121/linkml/modules/classes/CulturalInstitution.yaml

@@ -142,7 +142,7 @@ classes:
     - value:
         type_id: https://nde.nl/ontology/hc/type/cultural/Q3152824
         glamorcubesfixphdnt_code: MIXED
-        wikidata_entity: Q3152824
+        has_or_had_identifier: Q3152824  # was: wikidata_entity - migrated per Rule 53 (2026-01-16)
         type_label:
         - Cultural Institution@en
         - kulturelle Organisation@de

frontend/public/schemas/20251121/linkml/modules/classes/CurrentArchive.yaml

@@ -119,7 +119,7 @@ classes:
     - value:
         type_id: https://nde.nl/ontology/hc/type/archive/Q3621648
         glamorcubesfixphdnt_code: ARCHIVE
-        wikidata_entity: Q3621648
+        has_or_had_identifier: Q3621648  # was: wikidata_entity - migrated per Rule 53 (2026-01-16)
         type_label:
         - Current Archive@en
         - archivo corriente@es

frontend/public/schemas/20251121/linkml/modules/classes/CustodianPlace.yaml

@@ -22,7 +22,7 @@ imports:
   - ../slots/place_specificity
   - ../slots/place_note
   - ../slots/country
-  - ../slots/subregion
+  - ../slots/has_or_had_geographic_subdivision  # was: subregion - migrated per Rule 53/56 (2026-01-17)
   - ../slots/settlement
   - ../slots/is_or_was_derived_from  # was: was_derived_from - migrated per Rule 53
   - ../slots/is_or_was_generated_by  # was: was_generated_by - migrated per Rule 53
@@ -82,7 +82,7 @@ classes:
     - refers_to_custodian
     - settlement
     - specificity_annotation
-    - subregion
+    - has_or_had_geographic_subdivision  # was: subregion - migrated per Rule 53/56 (2026-01-17)
     - template_specificity
     - temporal_extent  # was: valid_from + valid_to - migrated per Rule 53
     - is_or_was_derived_from  # was: was_derived_from - migrated per Rule 53
@@ -131,7 +131,7 @@ classes:
           description: Place located in Netherlands
         - value: https://nde.nl/ontology/hc/country/PE
           description: Place located in Peru
-      subregion:
+      has_or_had_geographic_subdivision:  # was: subregion - migrated per Rule 53/56 (2026-01-17)
         range: Subregion
         inlined: true
         required: false

frontend/public/schemas/20251121/linkml/modules/classes/DarkArchive.yaml

@@ -115,7 +115,7 @@ classes:
     - value:
         type_id: https://nde.nl/ontology/hc/type/archive/Q112796578
         glamorcubesfixphdnt_code: ARCHIVE
-        wikidata_entity: Q112796578
+        has_or_had_identifier: Q112796578  # was: wikidata_entity - migrated per Rule 53 (2026-01-16)
         type_label:
         - Dark Archive@en
         - Dark Archive@de
@@ -132,7 +132,7 @@ classes:
     - value:
         type_id: https://nde.nl/ontology/hc/type/archive/Q112796578-embargo
         glamorcubesfixphdnt_code: ARCHIVE
-        wikidata_entity: Q112796578
+        has_or_had_identifier: Q112796578  # was: wikidata_entity - migrated per Rule 53 (2026-01-16)
         type_label:
         - Embargoed Dark Archive@en
         has_or_had_description: Materials under embargo with future access date  # was: type_description - migrated per Rule 53/56 (2026-01-16)

frontend/public/schemas/20251121/linkml/modules/classes/DepartmentalArchives.yaml

@@ -127,7 +127,7 @@ classes:
     - value:
         type_id: https://nde.nl/ontology/hc/type/archive/Q2860456
         glamorcubesfixphdnt_code: ARCHIVE
-        wikidata_entity: Q2860456
+        has_or_had_identifier: Q2860456  # was: wikidata_entity - migrated per Rule 53 (2026-01-16)
         type_label:
         - Departmental Archives@en
         - Département-Archiv@de

frontend/public/schemas/20251121/linkml/modules/classes/DepartmentalArchivesRecordSetType.yaml

@@ -20,16 +20,15 @@ imports:
   - ../slots/is_or_was_related_to
   - ../slots/specificity_annotation
   - ../slots/template_specificity
-  - ../slots/wikidata_equivalent
 classes:
   DepartmentalArchivesRecordSetType:
     description: A rico:RecordSetType for classifying collections of French departmental archive materials within heritage
       institutions.
     is_a: CollectionType
     class_uri: rico:RecordSetType
+    exact_mappings:
+      - wd:Q2860456  # Wikidata (was: slot_usage wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     slot_usage:
-      wikidata_equivalent:
-        equals_string: Q2860456
       has_or_had_custodian_type:
         equals_expression: '["hc:ArchiveOrganizationType"]'
       is_or_was_related_to:  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)

frontend/public/schemas/20251121/linkml/modules/classes/DepositArchive.yaml

@@ -126,7 +126,7 @@ classes:
     - value:
         type_id: https://nde.nl/ontology/hc/type/archive/Q244904
         glamorcubesfixphdnt_code: ARCHIVE
-        wikidata_entity: Q244904
+        has_or_had_identifier: Q244904  # was: wikidata_entity - migrated per Rule 53 (2026-01-16)
         type_label:
         - Deposit Archive@en
         - Zwischenarchiv@de

frontend/public/schemas/20251121/linkml/modules/classes/DigitalArchive.yaml

@@ -24,7 +24,7 @@ imports:
   - ../slots/has_or_had_custodian_type
   - ../slots/has_or_had_operates_platform_type
   - ../slots/specificity_annotation
-  - ../slots/supported_format
+  - ../slots/has_or_had_format  # was: supported_format - migrated per Rule 53/56 (2026-01-16)
   - ../slots/template_specificity
   - ../slots/has_or_had_identifier  # was: wikidata_entity - migrated per Rule 53 (2026-01-15)
   - ./WikiDataIdentifier  # for has_or_had_identifier range
@@ -43,7 +43,7 @@ classes:
     - has_or_had_operates_platform_type
     - preservation_level
     - specificity_annotation
-    - supported_format
+    - has_or_had_format  # was: supported_format - migrated per Rule 53/56 (2026-01-16)
     - template_specificity
     - has_or_had_identifier  # was: wikidata_entity - migrated per Rule 53 (2026-01-15)
     description: "Information system collecting and providing access to digital resources.\n\n**Wikidata**: Q1224984 (digital\
@@ -93,15 +93,19 @@ classes:
         range: uri
         examples:
         - value: https://archive.example.org/access
-      supported_format:
-        range: string
+      has_or_had_format:  # was: supported_format - migrated per Rule 53/56 (2026-01-16)
+        range: uriorcurie
         multivalued: true
+        description: |
+          File formats supported/preferred by the digital archive.
+          MIGRATED from supported_format slot per slot_fixes.yaml (Rule 53/56, 2026-01-16).
         examples:
         - value:
-          - PDF/A
-          - TIFF
-          - JPEG2000
-          - XML
+          - iana:application/pdf
+          - iana:image/tiff
+          - iana:image/jp2
+          - iana:application/xml
+          description: Common digital archive formats as IANA media type CURIEs
       has_or_had_custodian_type:
         equals_expression: '["hc:ArchiveOrganizationType", "hc:DigitalPlatformType"]'
     exact_mappings:
@@ -126,7 +130,7 @@ classes:
     - value:
         type_id: https://nde.nl/ontology/hc/type/archive/Q1224984
         glamorcubesfixphdnt_code: ARCHIVE
-        wikidata_entity: Q1224984
+        has_or_had_identifier: Q1224984  # was: wikidata_entity - migrated per Rule 53 (2026-01-16)
         type_label:
         - Digital Archive@en
         - digitales Archiv@de
@@ -141,9 +145,9 @@ classes:
         content_origin: mixed
         preservation_level: level_3
         access_interface_url: https://digitalarchive.example.org
-        supported_format:
-        - PDF/A
-        - TIFF
-        - JPEG2000
-        - WARC
+        has_or_had_format:  # was: supported_format - migrated per Rule 53/56 (2026-01-16)
+        - iana:application/pdf
+        - iana:image/tiff
+        - iana:image/jp2
+        - iana:application/warc
       description: Government digital archive with mixed content

frontend/public/schemas/20251121/linkml/modules/classes/DimArchives.yaml

@@ -128,7 +128,7 @@ classes:
     - value:
         type_id: https://nde.nl/ontology/hc/type/archive/Q112796779
         glamorcubesfixphdnt_code: ARCHIVE
-        wikidata_entity: Q112796779
+        has_or_had_identifier: Q112796779  # was: wikidata_entity - migrated per Rule 53 (2026-01-16)
         type_label:
         - Dim Archive@en
         - Dim Archive@de

frontend/public/schemas/20251121/linkml/modules/classes/DiocesanArchive.yaml

@@ -114,7 +114,7 @@ classes:
     - value:
         type_id: https://nde.nl/ontology/hc/type/archive/Q11906839
         glamorcubesfixphdnt_code: ARCHIVE
-        wikidata_entity: Q11906839
+        has_or_had_identifier: Q11906839  # was: wikidata_entity - migrated per Rule 53 (2026-01-16)
         type_label:
         - Diocesan Archive@en
         - Bischöfliches Archiv@de

frontend/public/schemas/20251121/linkml/modules/classes/ExhibitedObject.yaml

@@ -60,7 +60,7 @@ imports:
   - ../slots/has_or_had_previous_owner
   - ../slots/has_or_had_provenance_event
   - ../slots/specificity_annotation
-  - ../slots/subject_depicted
+  - ../slots/has_or_had_subject  # was: subject_depicted - migrated per Rule 53/56 (2026-01-17)
   - ../slots/template_specificity
   - ./SpecificityAnnotation
   - ./TemplateSpecificityScores
@@ -150,7 +150,7 @@ classes:
     - has_or_had_provenance_event
     - provenance_text
     - specificity_annotation
-    - subject_depicted
+    - has_or_had_subject  # was: subject_depicted - migrated per Rule 53/56 (2026-01-17)
     - template_specificity
     # REMOVED 2026-01-15: wikidata_id - migrated to has_or_had_identifier (Rule 53)
     - has_or_had_identifier
@@ -348,7 +348,7 @@ classes:
         inlined: false
         examples:
         - value: https://nde.nl/ontology/hc/collection/mauritshuis-dutch-paintings
-      subject_depicted:
+      has_or_had_subject:  # was: subject_depicted - migrated per Rule 53/56 (2026-01-17)
         required: false
         range: string
         multivalued: true
@@ -506,7 +506,7 @@ classes:
           \ sale, Amsterdam, May 16, 1696; A.A. des Tombe, \nThe Hague (purchased 1881); Bequeathed to Mauritshuis (1903).\n"
         exhibited_in:
         - https://nde.nl/ontology/hc/exhibition/rijksmuseum-vermeer-2023
-        subject_depicted:
+        has_or_had_subject:  # was: subject_depicted - migrated per Rule 53/56 (2026-01-17)
         - portrait
         - girl
         - pearl earring

frontend/public/schemas/20251121/linkml/modules/classes/ExhibitionCatalog.yaml

@@ -50,7 +50,9 @@ imports:
   - ../slots/pdf_url
   - ../slots/publication_place
   - ../slots/specificity_annotation
-  - ../slots/table_of_content
+  - ../slots/is_or_was_indexed  # was: table_of_content - migrated per Rule 53/56 (2026-01-16)
+  - ./Index
+  - ./IndexType
   - ../slots/template_specificity
   # REMOVED - migrated to has_or_had_identifier with WorldCatIdentifier (2026-01-14, Rule 53)
   # - ../slots/worldcat_id
@@ -118,7 +120,7 @@ classes:
     - publication_place
     - publisher
     - specificity_annotation
-    - table_of_content
+    - is_or_was_indexed  # was: table_of_content - migrated per Rule 53/56 (2026-01-16)
     - template_specificity
     # REMOVED 2026-01-15: wikidata_id - migrated to has_or_had_identifier (Rule 53)
     # REMOVED: worldcat_id - migrated to has_or_had_identifier with WorldCatIdentifier (2026-01-14, Rule 53)
@@ -298,21 +300,12 @@ classes:
         - value: "The official catalog of the groundbreaking Vermeer exhibition at the \nRijksmuseum, featuring 28 of the\
             \ Dutch master's 37 known paintings.\nIncludes scholarly essays on Vermeer's technique, pigments, and\nsubjects,\
             \ along with detailed entries for each work.\n"
-      table_of_content:
-        required: false
-        range: string
-        examples:
-        - value: '1. Introduction (Pieter Roelofs)
-
-            2. Vermeer''s Delft (Gregor Weber)
-
-            3. Technique and Materials (Anna Tummers)
-
-            4. Catalog Entries
-
-            5. Appendices
-
-            '
+      # DEPRECATED: table_of_content - migrated to is_or_was_indexed with Index class (2026-01-16, Rule 53/56)
+      # table_of_content:
+      #   required: false
+      #   range: string
+      #   examples:
+      #   - value: '1. Introduction...'
       has_or_had_essay:
         required: false
         range: string
@@ -321,6 +314,40 @@ classes:
         - value: Vermeer's World
         - value: The Science of Vermeer's Pigments
         - value: Vermeer and the Camera Obscura
+      # was: table_of_content - migrated per Rule 53/56 (2026-01-16)
+      is_or_was_indexed:
+        required: false
+        range: Index
+        multivalued: true
+        inlined_as_list: true
+        description: |
+          Table of contents or index structure for the catalog.
+          MIGRATED from table_of_content slot per slot_fixes.yaml (Rule 53/56, 2026-01-16).
+          
+          Uses Index class for structured representation of:
+          - Table of contents with hierarchical entries
+          - Subject indexes
+          - Name indexes
+          - Illustration lists
+        examples:
+        - value:
+            has_or_had_identifier: hc:index/vermeer-catalog-toc
+            has_or_had_label:
+              - Table of Contents@en
+            has_or_had_index_type:
+              has_or_had_identifier: hc:index-type/table-of-contents
+            index_entry:
+              - entry_label: "1. Introduction (Pieter Roelofs)"
+                entry_level: 1
+              - entry_label: "2. Vermeer's Delft (Gregor Weber)"
+                entry_level: 1
+              - entry_label: "3. Technique and Materials (Anna Tummers)"
+                entry_level: 1
+              - entry_label: "4. Catalog Entries"
+                entry_level: 1
+              - entry_label: "5. Appendices"
+                entry_level: 1
+          description: Structured table of contents for Vermeer catalog
       catalog_entries_count:
         required: false
         range: integer

frontend/public/schemas/20251121/linkml/modules/classes/FeatureCustodianType.yaml

@@ -59,30 +59,13 @@ imports:
   - ../slots/feature_type
   - ../slots/site_portfolio
   - ../slots/specificity_annotation
-  - ../slots/stewardship_model
+  - ../slots/is_or_was_managed_by  # was: stewardship_model - migrated per Rule 53/56 (2026-01-17)
   - ../slots/template_specificity
   - ../slots/has_or_had_service  # was: visitor_service - migrated per Rule 53
   - ./Service
   - ./SpecificityAnnotation
   - ./TemplateSpecificityScores
-  - ../slots/feature_type
-  - ../slots/has_or_had_access_management
-  - ../slots/has_or_had_activity
-  - ../slots/has_or_had_custodian_type
-  - ../slots/has_or_had_service
-  - ../slots/site_portfolio
-  - ../slots/specificity_annotation
-  - ../slots/stewardship_model
-  - ../slots/template_specificity
-  - ../slots/feature_type
-  - ../slots/has_or_had_access_management
-  - ../slots/has_or_had_activity
-  - ../slots/has_or_had_custodian_type
-  - ../slots/has_or_had_service
-  - ../slots/site_portfolio
-  - ../slots/specificity_annotation
-  - ../slots/stewardship_model
-  - ../slots/template_specificity
+  # REMOVED duplicate imports (file had 3x copies) - cleaned up 2026-01-17
 prefixes:
   linkml: https://w3id.org/linkml/
   hc: https://nde.nl/ontology/hc/
@@ -232,7 +215,7 @@ classes:
       \ \"Historic house\", \"Abbey\", \"Fort\" ;\n  hc:site_portfolio \"400+ historic sites and monuments across England\"\
       \ ;\n  hc:visitor_services \"On-site interpretation\", \"Guided tours\", \"Events\", \"Gift shops\", \"Cafés\" ;\n \
       \ hc:conservation_activities \"Monument preservation\", \"Structural repairs\", \"Archaeological research\" ;\n  hc:access_management\
-      \ \"Ticketing\", \"Opening hours\", \"Accessibility programs\", \"Education visits\" ;\n  hc:stewardship_model \"Charitable\
+      \ \"Ticketing\", \"Opening hours\", \"Accessibility programs\", \"Education visits\" ;\n  hc:is_or_was_managed_by \"Charitable\
       \ trust ownership and management\" ;\n  schema:foundingDate \"1983-04-01\" ;\n  schema:legalName \"English Heritage\
       \ Trust\" ;\n  schema:url <https://www.english-heritage.org.uk/> ;\n  hc:manages_feature <https://w3id.org/heritage/feature/gb/stonehenge>,\n\
       \                    <https://w3id.org/heritage/feature/gb/dover-castle> .\n```\n"
@@ -253,7 +236,7 @@ classes:
     - feature_type
     - site_portfolio
     - specificity_annotation
-    - stewardship_model
+    - is_or_was_managed_by  # was: stewardship_model - migrated per Rule 53/56 (2026-01-17)
     - template_specificity
     - has_or_had_service  # was: visitor_service - migrated per Rule 53
     slot_usage:
@@ -323,8 +306,8 @@ classes:
           description: Open access model
         - value: Restricted access, Conservation priority, Virtual alternatives
           description: Limited access model
-      stewardship_model:
-        range: string
+      is_or_was_managed_by:  # was: stewardship_model - migrated per Rule 53/56 (2026-01-17)
+        range: uriorcurie
         required: true
         examples:
         - value: Charitable trust ownership and management

frontend/public/schemas/20251121/linkml/modules/classes/FileAPI.yaml

@@ -31,7 +31,7 @@ classes:
       - Fixed-resolution derivatives\n- Non-image files (PDFs, audio, video, office documents)\n\n**Example - Nationaal Archief\
       \ File API:**\n\n```yaml\nfile_api:\n  endpoint_name: \"Nationaal Archief File API\"\n  base_url: \"https://service.archief.nl/gaf/api/file/v1/\"\
       \n  url_pattern: \"{base_url}{uuid}/{level}/{format}\"\n  version: \"v1\"\n  supported_levels:\n    - MASTER\n    -\
-      \ HIGH\n    - MEDIUM\n    - LOW\n    - THUMBNAIL\n  supported_format:\n    - image/jpeg\n    - image/png\n    - application/pdf\n\
+      \ HIGH\n    - MEDIUM\n    - LOW\n    - THUMBNAIL\n  has_or_had_format:  # was: supported_format - migrated 2026-01-16\n    - image/jpeg\n    - image/png\n    - application/pdf\n\
       \  max_file_size_mb: 500\n  supports_range_requests: true\n  example_url: \"https://service.archief.nl/gaf/api/file/v1/12345678.../high/jpeg\"\
       \n```\n\n**Use Cases:**\n\n1. **Download master files**: Archival-quality preservation copies\n2. **Generate derivatives**:\
       \ Request specific size/format\n3. **Batch harvesting**: Download all files for a record\n4. **Streaming**: Audio/video\
@@ -101,7 +101,7 @@ classes:
           '
         range: string
         multivalued: true
-      supported_format:
+      has_or_had_format:  # was: supported_format - migrated per Rule 53/56 (2026-01-16)
         slot_uri: dcterms:format
         description: 'File formats (MIME types) available for download.
 
@@ -120,7 +120,7 @@ classes:
           - Video: ["video/mp4", "video/webm"]
 
           '
-        range: string
+        range: uriorcurie
         multivalued: true
         required: true
       max_file_size_mb:

frontend/public/schemas/20251121/linkml/modules/classes/FindingAid.yaml

@@ -32,8 +32,8 @@ imports:
   - ../slots/has_or_had_access_restriction
   - ../slots/has_or_had_web_claim
   - ../slots/language
-  - ../slots/supersede
-  - ../slots/superseded_by
+  - ../slots/supersedes_or_superseded  # was: supersede - migrated per Rule 53/56 (2026-01-17)
+  - ../slots/is_or_was_superseded_by  # was: superseded_by - migrated per Rule 53/56 (2026-01-16)
   - ../slots/revision_date
   - ../slots/served_by
   - ../slots/retrieval_agent
@@ -133,7 +133,7 @@ imports:
   - ../slots/start
   - ../slots/has_or_had_description  # was: sub_guide_description - migrated per Rule 53
   - ./Description
-  - ../slots/sub_guide_temporal_coverage
+  # REMOVED: ../slots/sub_guide_temporal_coverage - migrated to has_or_had_content (2026-01-17, Rule 53/56)
   - ./SubGuideType
   - ../slots/has_or_had_sub_guide
   - ../slots/has_or_had_sub_section
@@ -274,8 +274,8 @@ classes:
     - slug
     - specificity_annotation
     - has_or_had_sub_guide
-    - superseded_by
-    - supersede
+    - is_or_was_superseded_by  # was: superseded_by - migrated per Rule 53/56 (2026-01-16)
+    - supersedes_or_superseded  # was: supersede - migrated per Rule 53/56 (2026-01-17)
     - template_specificity
     - finding_aid_temporal_coverage
     - has_or_had_label  # was: title
@@ -570,7 +570,7 @@ classes:
     - slug
     - specificity_annotation
     - has_or_had_description  # was: sub_guide_description - migrated per Rule 53
-    - sub_guide_temporal_coverage
+    - has_or_had_content  # was: sub_guide_temporal_coverage - migrated per Rule 53/56 (2026-01-17)
     - has_or_had_type
     - template_specificity
     # REMOVED: title_en, title_nl - migrated to has_or_had_label with Label (2026-01-14, Rule 53)
@@ -612,6 +612,18 @@ classes:
           Uses SubGuideType class hierarchy.
       is_or_was_access_restricted:
         range: boolean
+      has_or_had_content:
+        range: string
+        description: |
+          Time period covered by this sub-guide (free text).
+          MIGRATED from sub_guide_temporal_coverage (2026-01-17) per Rule 53/56.
+          
+          Examples: "1811-1935", "before 1811", "1811-present"
+        examples:
+        - value: "1811-1935"
+          description: Date range
+        - value: "before 1811"
+          description: Open-ended historical period
     exact_mappings:
     - rico:isOrWasPartOf
   ArchiveReference:
@@ -632,7 +644,7 @@ classes:
     - name
     - resource_description
     - specificity_annotation
-    - sub_guide_temporal_coverage
+    - has_or_had_content  # was: sub_guide_temporal_coverage - migrated per Rule 53/56 (2026-01-17)
     - template_specificity
     - has_or_had_url  # was: url - migrated per Rule 53 (2025-01-15)
     slot_usage:
@@ -647,6 +659,13 @@ classes:
           MIGRATED from url slot per slot_fixes.yaml (Rule 53, 2025-01-15).
       isil:
         pattern: ^[A-Z]{2}-[A-Za-z0-9]+$
+      has_or_had_content:
+        range: string
+        description: |
+          Time period covered by this archive reference (free text).
+          MIGRATED from sub_guide_temporal_coverage (2026-01-17) per Rule 53/56.
+          
+          Examples: "1811-1935", "before 1811", "1811-present"
     exact_mappings:
     - rico:RecordSet
     - schema:ArchiveOrganization

frontend/public/schemas/20251121/linkml/modules/classes/FundingRequirement.yaml

@@ -17,7 +17,7 @@ imports:
   - ../slots/temporal_extent  # was: valid_from + valid_to - migrated per Rule 53
   - ./TimeSpan
   # REMOVED 2026-01-14: valid_from + valid_to - migrated to temporal_extent (Rule 53)
-  - ../slots/supersede
+  - ../slots/supersedes_or_superseded  # was: supersede - migrated per Rule 53/56 (2026-01-17)
   - ../slots/extraction_confidence
   - ../slots/extraction_note
   - ../slots/observed_in
@@ -111,7 +111,7 @@ classes:
     - requirement_value
     - source_section
     - specificity_annotation
-    - supersede
+    - supersedes_or_superseded  # was: supersede - migrated per Rule 53/56 (2026-01-17)
     - template_specificity
     - temporal_extent  # was: valid_from + valid_to - migrated per Rule 53
     slot_usage:
@@ -206,7 +206,7 @@ classes:
           description: Location in FAQ document
         - value: Work Programme page 45
           description: Location in programme document
-      supersede:
+      supersedes_or_superseded:  # was: supersede - migrated per Rule 53/56 (2026-01-17)
         range: uriorcurie
         examples:
         - value: https://nde.nl/ontology/hc/requirement/ec-cl2-2024-heritage-01/min-partners-4
@@ -226,7 +226,7 @@ classes:
     - Each requirement links to WebObservation for full provenance chain
     - requirement_value + requirement_unit enable structured queries
     - is_mandatory defaults to true; explicitly set false for optional requirements
-    - supersedes creates version chain for requirement changes
+    - supersedes_or_superseded creates version chain for requirement changes
     - extraction_confidence can differ from observation confidence
     see_also:
     - https://dublincore.org/specifications/dublin-core/dcmi-terms/#Standard

frontend/public/schemas/20251121/linkml/modules/classes/GiftShop.yaml

@@ -33,7 +33,10 @@ imports:
   - ../slots/shop_type
   - ../slots/specificity_annotation
   - ../slots/square_meters
-  - ../slots/supplier_relationship
+  - ../slots/has_or_had_supplier  # was: supplier_relationship - migrated per Rule 53/56 (2026-01-16)
+  - ./Supplier
+  - ./SupplierType
+  - ./SupplierTypes
   - ../slots/template_specificity
   - ../slots/temporal_extent  # consolidated: absorbs valid_from + valid_to per Rule 53
   # REMOVED 2026-01-14: valid_from + valid_to - migrated to temporal_extent (Rule 53)
@@ -127,7 +130,7 @@ classes:
     - specificity_annotation
     - square_meters
     - staff_count
-    - supplier_relationship
+    - has_or_had_supplier  # was: supplier_relationship - migrated per Rule 53/56 (2026-01-16)
     - template_specificity
     - temporal_extent  # consolidated: absorbs valid_from + valid_to per Rule 53
     - has_or_had_conversion_rate
@@ -284,15 +287,29 @@ classes:
           description: Internal management
         - value: Outsourced (Culture Shops Ltd)
           description: External operator
-      supplier_relationship:
-        range: string
+      has_or_had_supplier:  # was: supplier_relationship - migrated per Rule 53/56 (2026-01-16)
+        range: Supplier
+        inlined_as_list: true
         multivalued: true
         required: false
+        description: |
+          Supplier relationships for shop merchandise.
+          MIGRATED from supplier_relationship slot per slot_fixes.yaml (Rule 53/56, 2026-01-16).
         examples:
-        - value: King & McGaw (art prints)
-          description: Print supplier
-        - value: Museum Reproductions Ltd
-          description: Reproduction supplier
+        - value:
+            - has_or_had_label:
+                label_text: "King & McGaw"
+              has_or_had_type:
+                - has_or_had_label:
+                    label_text: "Print Supplier"
+              has_or_had_description:
+                description_text: "Art prints supplier"
+            - has_or_had_label:
+                label_text: "Museum Reproductions Ltd"
+              has_or_had_type:
+                - has_or_had_label:
+                    label_text: "Reproduction Supplier"
+          description: Structured supplier relationships with type classification
       temporal_extent:  # was: valid_from + valid_to - migrated per Rule 53
         range: TimeSpan
         required: false
@@ -369,6 +386,19 @@ classes:
         staff_count: 25
         square_meters: 450.0
         managed_by: In-house (Rijksmuseum BV)
+        has_or_had_supplier:  # was: supplier_relationship - migrated per Rule 53/56 (2026-01-16)
+        - has_or_had_label:
+            label_text: "King & McGaw"
+          has_or_had_type:
+            - has_or_had_label:
+                label_text: "Print Supplier"
+          has_or_had_description:
+            description_text: "Fine art prints supplier for museum reproductions"
+        - has_or_had_label:
+            label_text: "Museum Reproductions Ltd"
+          has_or_had_type:
+            - has_or_had_label:
+                label_text: "Reproduction Supplier"
         valid_from: '2013-04-13'
         refers_to_custodian: https://nde.nl/ontology/hc/nl-nh-ams-m-rm-q190804
       description: Rijksmuseum flagship museum shop

frontend/public/schemas/20251121/linkml/modules/classes/HolySacredSiteType.yaml

@@ -23,30 +23,14 @@ imports:
   - ../slots/religious_tradition
   - ../slots/secularization_status
   - ../slots/specificity_annotation
-  - ../slots/stewardship_responsibility
+  - ../slots/is_or_was_managed_by  # was: stewardship_responsibility - migrated per Rule 53/56 (2026-01-17)
   - ../slots/template_specificity
   - ./SpecificityAnnotation
   - ./TemplateSpecificityScores
-  - ../slots/collection_type
-  - ../slots/has_or_had_access_policy
-  - ../slots/has_or_had_custodian_type
-  - ../slots/holy_site_subtype
-  - ../slots/religious_function
-  - ../slots/religious_tradition
-  - ../slots/secularization_status
-  - ../slots/specificity_annotation
-  - ../slots/stewardship_responsibility
-  - ../slots/template_specificity
-  - ../slots/collection_type
-  - ../slots/has_or_had_access_policy
-  - ../slots/has_or_had_custodian_type
-  - ../slots/holy_site_subtype
-  - ../slots/religious_function
-  - ../slots/religious_tradition
-  - ../slots/secularization_status
-  - ../slots/specificity_annotation
-  - ../slots/stewardship_responsibility
-  - ../slots/template_specificity
+  # REMOVED duplicate imports - these are already imported above:
+  # collection_type, has_or_had_access_policy, has_or_had_custodian_type, holy_site_subtype
+  # religious_function, religious_tradition, secularization_status, specificity_annotation
+  # stewardship_responsibility, template_specificity (x3 copies)
 prefixes:
   linkml: https://w3id.org/linkml/
   hc: https://nde.nl/ontology/hc/
@@ -295,7 +279,7 @@ classes:
       \ ;\n  hc:religious_tradition \"Roman Catholic Christianity\" ;\n  hc:collection_type \"Archival records\", \"Papal\
       \ documents\", \"Medieval manuscripts\", \"Correspondence\" ;\n  hc:religious_function \"Support papal governance\"\
       , \"Document Church history\", \"Preserve canon law\" ;\n  hc:access_policy \"Restricted access by appointment\", \"\
-      Scholars and researchers only\", \"No browsing\" ;\n  hc:stewardship_responsibility \"Prefect of Vatican Apostolic Archive\"\
+      Scholars and researchers only\", \"No browsing\" ;\n  hc:is_or_was_managed_by \"Prefect of Vatican Apostolic Archive\"\
       , \"Papal administrative authority\" ;\n  hc:secularization_status \"Active religious institution, No secularization\"\
       \ ;\n  schema:name \"Vatican Apostolic Archive\"@en, \"Archivum Apostolicum Vaticanum\"@la ;\n  schema:alternateName\
       \ \"Vatican Secret Archives (former name until 2019)\" ;\n  schema:foundingDate \"1612\" ;\n  schema:location \"Vatican\
@@ -322,7 +306,7 @@ classes:
     - religious_tradition
     - secularization_status
     - specificity_annotation
-    - stewardship_responsibility
+    - is_or_was_managed_by  # was: stewardship_responsibility - migrated per Rule 53/56 (2026-01-17)
     - template_specificity
     slot_usage:
       religious_tradition:
@@ -366,8 +350,8 @@ classes:
           description: Cathedral treasury access
         - value: Digitized online, Physical access by permission
           description: Monastery library access
-      stewardship_responsibility:
-        range: string
+      is_or_was_managed_by:  # was: stewardship_responsibility - migrated per Rule 53/56 (2026-01-17)
+        range: uriorcurie
         required: true
         examples:
         - value: Prefect of Vatican Archive, Papal authority

frontend/public/schemas/20251121/linkml/modules/classes/Jurisdiction.yaml

@@ -18,7 +18,7 @@ imports:
   - ../enums/JurisdictionTypeEnum
   - ../enums/LegalSystemTypeEnum
   - ../slots/country
-  - ../slots/subregion
+  - ../slots/has_or_had_geographic_subdivision  # was: subregion - migrated per Rule 53/56 (2026-01-17)
   - ../slots/settlement
   - ../slots/description
   - ../slots/jurisdiction_id
@@ -77,7 +77,7 @@ classes:
     - legal_system_type
     - settlement
     - specificity_annotation
-    - subregion
+    - has_or_had_geographic_subdivision  # was: subregion - migrated per Rule 53/56 (2026-01-17)
     - has_or_had_code  # was: supranational_code - migrated per Rule 53
     - template_specificity
     slot_usage:
@@ -88,7 +88,7 @@ classes:
         required: true
       country:
         required: false
-      subregion:
+      has_or_had_geographic_subdivision:  # was: subregion - migrated per Rule 53/56 (2026-01-17)
         required: false
       settlement:
         required: false

frontend/public/schemas/20251121/linkml/modules/classes/LibraryType.yaml

@@ -18,29 +18,8 @@ imports:
   - ./SpecificityAnnotation
   - ./TemplateSpecificityScores
   - ../slots/broader_type
-  - ../slots/catalog_system
-  - ../slots/cataloging_standard
-  - ../slots/has_or_had_custodian_type
-  - ../slots/interlibrary_loan
-  - ../slots/lending_policy
-  - ../slots/library_subtype
-  - ../slots/membership_required
-  - ../slots/special_collection
-  - ../slots/specificity_annotation
-  - ../slots/template_specificity
-  - ../slots/wikidata_entity
-  - ../slots/broader_type
-  - ../slots/catalog_system
-  - ../slots/cataloging_standard
-  - ../slots/has_or_had_custodian_type
-  - ../slots/interlibrary_loan
-  - ../slots/lending_policy
-  - ../slots/library_subtype
-  - ../slots/membership_required
-  - ../slots/special_collection
-  - ../slots/specificity_annotation
-  - ../slots/template_specificity
-  - ../slots/wikidata_entity
+  - ../slots/has_or_had_identifier  # was: wikidata_entity - migrated per Rule 53 (2026-01-16)
+  - ./WikiDataIdentifier
 classes:
   LibraryType:
     is_a: CustodianType
@@ -148,10 +127,12 @@ classes:
     - special_collection
     - specificity_annotation
     - template_specificity
+    - has_or_had_identifier  # was: wikidata_entity - migrated per Rule 53 (2026-01-16)
     slot_usage:
-      wikidata_entity:
+      has_or_had_identifier:  # was: wikidata_entity - migrated per Rule 53 (2026-01-16)
         pattern: ^Q[0-9]+$
         required: true
+        description: Wikidata identifier (Q-number) for this Library type concept
       broader_type:
         range: LibraryType
         required: false
@@ -177,7 +158,7 @@ classes:
     - value:
         type_id: https://nde.nl/ontology/hc/type/library/Q22806
         glamorcubesfixphdnt_code: LIBRARY
-        wikidata_entity: Q22806
+        has_or_had_identifier: Q22806  # was: wikidata_entity - migrated per Rule 53 (2026-01-16)
         type_label:
         - National Library@en
         - nationale bibliotheek@nl
@@ -198,12 +179,11 @@ classes:
     - value:
         type_id: https://nde.nl/ontology/hc/type/library/Q1994819
         glamorcubesfixphdnt_code: LIBRARY
-        wikidata_entity: Q1994819
+        has_or_had_identifier: Q1994819  # was: wikidata_entity - migrated per Rule 53 (2026-01-16)
         type_label:
         - WSF Library@en
         - WSF-bibliotheek@nl
-        has_or_had_description: public library in the Netherlands with a secondary research function (Wetenschappelijke en Speciale  # was: type_description - migrated per Rule 53/56 (2026-01-16)
-          Functies)
+        has_or_had_description: public library in the Netherlands with a secondary research function (Wetenschappelijke en Speciale Functies)  # was: type_description - migrated per Rule 53/56 (2026-01-16)
         broader_type: https://nde.nl/ontology/hc/type/library/Q7075
         lending_policy: open
         catalog_system: OCLC

frontend/public/schemas/20251121/linkml/modules/classes/MaterialTypes.yaml

@@ -19,6 +19,7 @@ prefixes:
   crm: http://www.cidoc-crm.org/cidoc-crm/
   aat: http://vocab.getty.edu/aat/
   skos: http://www.w3.org/2004/02/skos/core#
+  wd: http://www.wikidata.org/entity/
 
 default_prefix: hc
 
@@ -167,8 +168,8 @@ classes:
       **AAT Alignment**: aat:300014109 (paper)
     exact_mappings:
       - aat:300014109
+      - wd:Q11472  # Wikidata: paper (was: annotation wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     annotations:
-      wikidata_equivalent: "Q11472"
   
   ParchmentMaterial:
     is_a: OrganicMaterial
@@ -181,8 +182,8 @@ classes:
       **AAT Alignment**: aat:300011851 (parchment)
     exact_mappings:
       - aat:300011851
+      - wd:Q226697  # Wikidata: parchment (was: annotation wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     annotations:
-      wikidata_equivalent: "Q226697"
   
   TextileMaterial:
     is_a: OrganicMaterial
@@ -196,8 +197,8 @@ classes:
       **AAT Alignment**: aat:300014069 (textile)
     exact_mappings:
       - aat:300014069
+      - wd:Q28823  # Wikidata: textile (was: annotation wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     annotations:
-      wikidata_equivalent: "Q28823"
   
   LeatherMaterial:
     is_a: OrganicMaterial
@@ -210,8 +211,8 @@ classes:
       **AAT Alignment**: aat:300011845 (leather)
     exact_mappings:
       - aat:300011845
+      - wd:Q286  # Wikidata: leather (was: annotation wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     annotations:
-      wikidata_equivalent: "Q286"
   
   WoodMaterial:
     is_a: OrganicMaterial
@@ -224,8 +225,8 @@ classes:
       **AAT Alignment**: aat:300011914 (wood)
     exact_mappings:
       - aat:300011914
+      - wd:Q287  # Wikidata: wood (was: annotation wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     annotations:
-      wikidata_equivalent: "Q287"
   
   NitrateFilmMaterial:
     is_a: SyntheticMaterial
@@ -239,11 +240,11 @@ classes:
       **AAT Alignment**: aat:300127173 (nitrate film)
     exact_mappings:
       - aat:300127173
+      - wd:Q1201597  # Wikidata: nitrate film (was: annotation wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     annotations:
       typical_temperature: "-5°C to 4°C (cold storage mandatory)"
       typical_humidity: "30-35% RH"
       preservation_risks: "fire hazard, toxic off-gassing, self-ignition, deterioration"
-      wikidata_equivalent: "Q1201597"
   
   AcetateFilmMaterial:
     is_a: SyntheticMaterial
@@ -257,11 +258,11 @@ classes:
       **AAT Alignment**: aat:300127322 (acetate film)
     exact_mappings:
       - aat:300127322
+      - wd:Q421063  # Wikidata: acetate film (was: annotation wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     annotations:
       typical_temperature: "2°C to 10°C (cold storage recommended)"
       typical_humidity: "30-40% RH"
       preservation_risks: "vinegar syndrome, shrinkage, warping, channel marks"
-      wikidata_equivalent: "Q421063"
   
   PolyesterFilmMaterial:
     is_a: SyntheticMaterial

frontend/public/schemas/20251121/linkml/modules/classes/MissionStatement.yaml

@@ -21,7 +21,7 @@ imports:
   - ../slots/source_url
   - ../slots/retrieved_on
   - ../slots/content_hash
-  - ../slots/supersede
+  - ../slots/supersedes_or_superseded  # was: supersede - migrated per Rule 53/56 (2026-01-17)
   - ../slots/effective_date
   - ../slots/extraction_agent
   - ../slots/extraction_note
@@ -97,7 +97,7 @@ classes:
     - statement_summary
     - statement_text
     - has_or_had_type
-    - supersede
+    - supersedes_or_superseded  # was: supersede - migrated per Rule 53/56 (2026-01-17)
     - template_specificity
     - has_or_had_url  # was: text_fragment - migrated per Rule 53
     - has_or_had_provenance_path

frontend/public/schemas/20251121/linkml/modules/classes/MuseumType.yaml

@@ -19,29 +19,8 @@ imports:
   - ./SpecificityAnnotation
   - ./TemplateSpecificityScores
   - ../slots/broader_type
-  - ../slots/cataloging_standard
-  - ../slots/collection_focus
-  - ../slots/conservation_lab
-  - ../slots/exhibition_program
-  - ../slots/has_or_had_custodian_type
-  - ../slots/has_or_had_facility
-  - ../slots/museum_subtype
-  - ../slots/research_department
-  - ../slots/specificity_annotation
-  - ../slots/template_specificity
-  - ../slots/wikidata_entity
-  - ../slots/broader_type
-  - ../slots/cataloging_standard
-  - ../slots/collection_focus
-  - ../slots/conservation_lab
-  - ../slots/exhibition_program
-  - ../slots/has_or_had_custodian_type
-  - ../slots/has_or_had_facility
-  - ../slots/museum_subtype
-  - ../slots/research_department
-  - ../slots/specificity_annotation
-  - ../slots/template_specificity
-  - ../slots/wikidata_entity
+  - ../slots/has_or_had_identifier  # was: wikidata_entity - migrated per Rule 53 (2026-01-16)
+  - ./WikiDataIdentifier
 classes:
   MuseumType:
     is_a: CustodianType
@@ -163,10 +142,12 @@ classes:
     - specificity_annotation
     - template_specificity
     - has_or_had_facility  # was: visitor_facility - migrated per Rule 53
+    - has_or_had_identifier  # was: wikidata_entity - migrated per Rule 53 (2026-01-16)
     slot_usage:
-      wikidata_entity:
+      has_or_had_identifier:  # was: wikidata_entity - migrated per Rule 53 (2026-01-16)
         pattern: ^Q[0-9]+$
         required: true
+        description: Wikidata identifier (Q-number) for this Museum type concept
       broader_type:
         range: MuseumType
         required: false
@@ -202,7 +183,7 @@ classes:
     - value:
         type_id: https://nde.nl/ontology/hc/type/museum/Q207694
         glamorcubesfixphdnt_code: MUSEUM
-        wikidata_entity: Q207694
+        has_or_had_identifier: Q207694  # was: wikidata_entity - migrated per Rule 53 (2026-01-16)
         type_label:
         - Art Museum@en
         - kunstmuseum@nl
@@ -228,7 +209,7 @@ classes:
     - value:
         type_id: https://nde.nl/ontology/hc/type/museum/Q559049
         glamorcubesfixphdnt_code: MUSEUM
-        wikidata_entity: Q559049
+        has_or_had_identifier: Q559049  # was: wikidata_entity - migrated per Rule 53 (2026-01-16)
         type_label:
         - Natural History Museum@en
         - natuurhistorisch museum@nl

frontend/public/schemas/20251121/linkml/modules/classes/PrimaryDigitalPresenceAssertion.yaml

@@ -6,9 +6,9 @@ imports:
   - ./WebObservation
   - ./TimeSpan
   - ../enums/DigitalPresenceTypeEnum
-  - ../slots/supersede
+  - ../slots/supersedes_or_superseded  # was: supersede - migrated per Rule 53/56 (2026-01-17)
   - ../slots/confidence_score
-  - ../slots/superseded_by
+  - ../slots/is_or_was_superseded_by  # was: superseded_by - migrated per Rule 53/56 (2026-01-16)
   - ../slots/is_or_was_about_digital_presence
   # REMOVED - migrated to is_or_was_asserted_by (Rule 53)
   # - ../slots/asserted_by
@@ -105,8 +105,8 @@ classes:
     - confidence_score
     - digital_presence_type
     - specificity_annotation
-    - superseded_by
-    - supersede
+    - is_or_was_superseded_by  # was: superseded_by - migrated per Rule 53/56 (2026-01-16)
+    - supersedes_or_superseded  # was: supersede - migrated per Rule 53/56 (2026-01-17)
     - template_specificity
     - temporal_extent
     slot_usage:
@@ -202,12 +202,12 @@ classes:
           description: High confidence - no website exists
         - value: 0.65
           description: Medium confidence - both active, unclear primary
-      superseded_by:
+      is_or_was_superseded_by:  # was: superseded_by - migrated per Rule 53/56 (2026-01-16)
         range: uriorcurie
         required: false
         examples:
         - value: https://nde.nl/ontology/hc/assertion/club-facebook-primary-2023
-      supersede:
+      supersedes_or_superseded:  # was: supersede - migrated per Rule 53/56 (2026-01-17)
         range: uriorcurie
         required: false
         examples:
@@ -215,7 +215,7 @@ classes:
     comments:
     - Models primary presence status as temporal assertion, not static boolean
     - Based on CIDOC-CRM E13_Attribute_Assignment pattern
-    - Supports change tracking via supersedes/superseded_by links
+    - Supports change tracking via supersedes_or_superseded/is_or_was_superseded_by links
     - Provenance via WebObservation references
     - TimeSpan allows fuzzy temporal boundaries
     - Confidence scores reflect evidence quality

frontend/public/schemas/20251121/linkml/modules/classes/ResearchOrganizationType.yaml

@@ -18,29 +18,8 @@ imports:
   - ./SpecificityAnnotation
   - ./TemplateSpecificityScores
   - ../slots/broader_type
-  - ../slots/data_repository
-  - ../slots/has_or_had_academic_affiliation
-  - ../slots/has_or_had_custodian_type
-  - ../slots/publication_output
-  - ../slots/research_center_subtype
-  - ../slots/research_focus
-  - ../slots/research_infrastructure
-  - ../slots/research_project
-  - ../slots/specificity_annotation
-  - ../slots/template_specificity
-  - ../slots/wikidata_entity
-  - ../slots/broader_type
-  - ../slots/data_repository
-  - ../slots/has_or_had_academic_affiliation
-  - ../slots/has_or_had_custodian_type
-  - ../slots/publication_output
-  - ../slots/research_center_subtype
-  - ../slots/research_focus
-  - ../slots/research_infrastructure
-  - ../slots/research_project
-  - ../slots/specificity_annotation
-  - ../slots/template_specificity
-  - ../slots/wikidata_entity
+  - ../slots/has_or_had_identifier  # was: wikidata_entity - migrated per Rule 53 (2026-01-16)
+  - ./WikiDataIdentifier
 classes:
   ResearchOrganizationType:
     is_a: CustodianType
@@ -224,10 +203,12 @@ classes:
     - research_project
     - specificity_annotation
     - template_specificity
+    - has_or_had_identifier  # was: wikidata_entity - migrated per Rule 53 (2026-01-16)
     slot_usage:
-      wikidata_entity:
+      has_or_had_identifier:  # was: wikidata_entity - migrated per Rule 53 (2026-01-16)
         pattern: ^Q[0-9]+$
         required: true
+        description: Wikidata identifier (Q-number) for this Research Organization type concept
       broader_type:
         range: ResearchOrganizationType
         required: false
@@ -252,7 +233,7 @@ classes:
     - value:
         type_id: https://nde.nl/ontology/hc/type/research/Q117052196
         glamorcubesfixphdnt_code: RESEARCH_CENTER
-        wikidata_entity: Q117052196
+        has_or_had_identifier: Q117052196  # was: wikidata_entity - migrated per Rule 53 (2026-01-16)
         type_label:
         - Conservation Laboratory@en
         - restauratieatelier@nl
@@ -273,7 +254,7 @@ classes:
     - value:
         type_id: https://nde.nl/ontology/hc/type/research/Q181916
         glamorcubesfixphdnt_code: RESEARCH_CENTER
-        wikidata_entity: Q181916
+        has_or_had_identifier: Q181916  # was: wikidata_entity - migrated per Rule 53 (2026-01-16)
         type_label:
         - Herbarium@en
         - herbarium@nl

frontend/public/schemas/20251121/linkml/modules/classes/Settlement.yaml

@@ -6,7 +6,7 @@ imports:
   - ./Country
   - ./Subregion
   - ../slots/country
-  - ../slots/subregion
+  - ../slots/has_or_had_geographic_subdivision  # was: subregion - migrated per Rule 53/56 (2026-01-17)
   - ../slots/geonames_id
   - ../slots/latitude
   - ../slots/longitude
@@ -21,7 +21,7 @@ imports:
   - ../slots/longitude
   - ../slots/settlement_name
   - ../slots/specificity_annotation
-  - ../slots/subregion
+  - ../slots/has_or_had_geographic_subdivision  # was: subregion - migrated per Rule 53/56 (2026-01-17)
   - ../slots/template_specificity
   - ../slots/country
   - ../slots/geonames_id
@@ -29,7 +29,7 @@ imports:
   - ../slots/longitude
   - ../slots/settlement_name
   - ../slots/specificity_annotation
-  - ../slots/subregion
+  - ../slots/has_or_had_geographic_subdivision  # was: subregion - migrated per Rule 53/56 (2026-01-17)
   - ../slots/template_specificity
 classes:
   Settlement:
@@ -119,7 +119,7 @@ classes:
     - longitude
     - settlement_name
     - specificity_annotation
-    - subregion
+    - has_or_had_geographic_subdivision  # was: subregion - migrated per Rule 53/56 (2026-01-17)
     - template_specificity
     slot_usage:
       geonames_id:
@@ -128,7 +128,7 @@ classes:
         required: true
       country:
         required: true
-      subregion:
+      has_or_had_geographic_subdivision:  # was: subregion - migrated per Rule 53/56 (2026-01-17)
         required: false
       latitude:
         required: false

frontend/public/schemas/20251121/linkml/modules/classes/SoundArchive.yaml

@@ -38,7 +38,7 @@ classes:
     - is_or_was_related_to  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)
     - has_or_had_identifier  # was: wikidata_entity - migrated per Rule 53 (2026-01-15)
     exact_mappings:
-    - wd:Q2230431
+      - wd:Q2230431  # Wikidata (was: slot_usage wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     close_mappings:
     - rico:CorporateBody
     - skos:Concept
@@ -51,8 +51,6 @@ classes:
       record_set_type: true
       custodian_type: true
     slot_usage:
-      wikidata_equivalent:
-        equals_string: Q2230431
       has_or_had_custodian_type:
         equals_expression: '["hc:ArchiveOrganizationType"]'
       is_or_was_related_to:  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)

frontend/public/schemas/20251121/linkml/modules/classes/SoundArchiveRecordSetType.yaml

@@ -17,16 +17,15 @@ imports:
   - ../slots/is_or_was_related_to
   - ../slots/specificity_annotation
   - ../slots/template_specificity
-  - ../slots/wikidata_equivalent
 classes:
   SoundArchiveRecordSetType:
     description: A rico:RecordSetType for classifying collections of sound recordings and  audio materials within heritage
       institutions.
     is_a: CollectionType
     class_uri: rico:RecordSetType
+    exact_mappings:
+      - wd:Q2230431  # Wikidata (was: slot_usage wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     slot_usage:
-      wikidata_equivalent:
-        equals_string: Q2230431
       is_or_was_related_to:  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)
         range: WikidataAlignment
         inlined: true

frontend/public/schemas/20251121/linkml/modules/classes/SpecialCollection.yaml

@@ -27,6 +27,8 @@ classes:
       require special handling, storage, and access conditions.
     is_a: ArchiveOrganizationType
     class_uri: skos:Concept
+    exact_mappings:
+      - wd:Q4431094  # Wikidata (was: slot_usage wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     mixins:
     - LibraryType
     slots:
@@ -36,8 +38,6 @@ classes:
     - is_or_was_related_to  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)
     - has_or_had_identifier  # was: wikidata_entity - migrated per Rule 53 (2026-01-15)
     slot_usage:
-      wikidata_equivalent:
-        equals_string: Q4431094
       has_or_had_custodian_type:
         equals_expression: '["hc:LibraryType", "hc:ArchiveOrganizationType"]'
       is_or_was_related_to:  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)

frontend/public/schemas/20251121/linkml/modules/classes/SpecialCollectionRecordSetType.yaml

@@ -6,6 +6,7 @@ prefixes:
   schema: http://schema.org/
   skos: http://www.w3.org/2004/02/skos/core#
   rico: https://www.ica.org/standards/RiC/ontology#
+  wd: http://www.wikidata.org/entity/
 imports:
   - linkml:types
   - ./CollectionType
@@ -21,14 +22,14 @@ classes:
       services.
     is_a: CollectionType
     class_uri: rico:RecordSetType
+    exact_mappings:
+      - wd:Q4431094  # Wikidata (was: slot_usage wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     slots:
     - specificity_annotation
     - template_specificity
     - is_or_was_related_to  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)
     - has_or_had_identifier  # was: wikidata_entity - migrated per Rule 53 (2026-01-15)
     slot_usage:
-      wikidata_equivalent:
-        equals_string: Q4431094
       is_or_was_related_to:  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)
         range: WikidataAlignment
         inlined: true

frontend/public/schemas/20251121/linkml/modules/classes/SpecializedArchive.yaml

@@ -38,15 +38,13 @@ classes:
     - is_or_was_related_to  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)
     - has_or_had_identifier  # was: wikidata_entity - migrated per Rule 53 (2026-01-15)
     exact_mappings:
-    - wd:Q27030941
+      - wd:Q27030941  # Wikidata (was: slot_usage wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     close_mappings:
     - rico:CorporateBody
     - skos:Concept
     broad_mappings:
     - wd:Q166118
     slot_usage:
-      wikidata_equivalent:
-        equals_string: Q27030941
       has_or_had_custodian_type:
         equals_expression: '["hc:ArchiveOrganizationType"]'
       is_or_was_related_to:  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)

frontend/public/schemas/20251121/linkml/modules/classes/SpecializedArchiveRecordSetType.yaml

@@ -17,16 +17,15 @@ imports:
   - ../slots/is_or_was_related_to
   - ../slots/specificity_annotation
   - ../slots/template_specificity
-  - ../slots/wikidata_equivalent
 classes:
   SpecializedArchiveRecordSetType:
     description: A rico:RecordSetType for classifying collections from archives  specialized in specific fields or subject
       areas.
     is_a: CollectionType
     class_uri: rico:RecordSetType
+    exact_mappings:
+      - wd:Q27030941  # Wikidata (was: slot_usage wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     slot_usage:
-      wikidata_equivalent:
-        equals_string: Q27030941
       is_or_was_related_to:  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)
         range: WikidataAlignment
         inlined: true

frontend/public/schemas/20251121/linkml/modules/classes/SpecializedArchivesCzechia.yaml

@@ -38,15 +38,13 @@ classes:
     - is_or_was_related_to  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)
     - has_or_had_identifier  # was: wikidata_entity - migrated per Rule 53 (2026-01-15)
     exact_mappings:
-    - wd:Q101470010
+      - wd:Q101470010  # Wikidata (was: slot_usage wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     close_mappings:
     - rico:CorporateBody
     - skos:Concept
     broad_mappings:
     - wd:Q166118
     slot_usage:
-      wikidata_equivalent:
-        equals_string: Q101470010
       has_or_had_custodian_type:
         equals_expression: '["hc:ArchiveOrganizationType"]'
       is_or_was_related_to:  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)

frontend/public/schemas/20251121/linkml/modules/classes/SpecializedArchivesCzechiaRecordSetType.yaml

@@ -17,15 +17,14 @@ imports:
   - ../slots/is_or_was_related_to
   - ../slots/specificity_annotation
   - ../slots/template_specificity
-  - ../slots/wikidata_equivalent
 classes:
   SpecializedArchivesCzechiaRecordSetType:
     description: A rico:RecordSetType for classifying collections from specialized  archives within the Czech archival system.
     is_a: CollectionType
     class_uri: rico:RecordSetType
+    exact_mappings:
+      - wd:Q101470010  # Wikidata (was: slot_usage wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     slot_usage:
-      wikidata_equivalent:
-        equals_string: Q101470010
       is_or_was_related_to:  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)
         range: WikidataAlignment
         inlined: true

frontend/public/schemas/20251121/linkml/modules/classes/StateArchives.yaml

@@ -38,15 +38,13 @@ classes:
     - is_or_was_related_to  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)
     - has_or_had_identifier  # was: wikidata_entity - migrated per Rule 53 (2026-01-15)
     exact_mappings:
-    - wd:Q52341833
+      - wd:Q52341833  # Wikidata (was: slot_usage wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     close_mappings:
     - rico:CorporateBody
     - skos:Concept
     broad_mappings:
     - wd:Q166118
     slot_usage:
-      wikidata_equivalent:
-        equals_string: Q52341833
       has_or_had_custodian_type:
         equals_expression: '["hc:ArchiveOrganizationType"]'
       is_or_was_related_to:  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)

frontend/public/schemas/20251121/linkml/modules/classes/StateArchivesRecordSetType.yaml

@@ -17,15 +17,14 @@ imports:
   - ../slots/is_or_was_related_to
   - ../slots/specificity_annotation
   - ../slots/template_specificity
-  - ../slots/wikidata_equivalent
 classes:
   StateArchivesRecordSetType:
     description: A rico:RecordSetType for classifying collections of state government  records and administrative documentation.
     is_a: CollectionType
     class_uri: rico:RecordSetType
+    exact_mappings:
+      - wd:Q52341833  # Wikidata (was: slot_usage wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     slot_usage:
-      wikidata_equivalent:
-        equals_string: Q52341833
       is_or_was_related_to:  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)
         range: WikidataAlignment
         inlined: true

frontend/public/schemas/20251121/linkml/modules/classes/StateArchivesSection.yaml

@@ -38,15 +38,13 @@ classes:
     - is_or_was_related_to  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)
     - has_or_had_identifier  # was: wikidata_entity - migrated per Rule 53 (2026-01-15)
     exact_mappings:
-    - wd:Q44796387
+      - wd:Q44796387  # Wikidata (was: slot_usage wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     close_mappings:
     - rico:CorporateBody
     - skos:Concept
     broad_mappings:
     - wd:Q166118
     slot_usage:
-      wikidata_equivalent:
-        equals_string: Q44796387
       has_or_had_custodian_type:
         equals_expression: '["hc:ArchiveOrganizationType"]'
       is_or_was_related_to:  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)

frontend/public/schemas/20251121/linkml/modules/classes/StateArchivesSectionRecordSetType.yaml

@@ -17,15 +17,14 @@ imports:
   - ../slots/is_or_was_related_to
   - ../slots/specificity_annotation
   - ../slots/template_specificity
-  - ../slots/wikidata_equivalent
 classes:
   StateArchivesSectionRecordSetType:
     description: A rico:RecordSetType for classifying collections from Italian  state archive sections.
     is_a: CollectionType
     class_uri: rico:RecordSetType
+    exact_mappings:
+      - wd:Q44796387  # Wikidata (was: slot_usage wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     slot_usage:
-      wikidata_equivalent:
-        equals_string: Q44796387
       is_or_was_related_to:  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)
         range: WikidataAlignment
         inlined: true

frontend/public/schemas/20251121/linkml/modules/classes/StateDistrictArchive.yaml

@@ -38,15 +38,13 @@ classes:
     - is_or_was_related_to  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)
     - has_or_had_identifier  # was: wikidata_entity - migrated per Rule 53 (2026-01-15)
     exact_mappings:
-    - wd:Q53131316
+      - wd:Q53131316  # Wikidata (was: slot_usage wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     close_mappings:
     - rico:CorporateBody
     - skos:Concept
     broad_mappings:
     - wd:Q166118
     slot_usage:
-      wikidata_equivalent:
-        equals_string: Q53131316
       has_or_had_custodian_type:
         equals_expression: '["hc:ArchiveOrganizationType"]'
       is_or_was_related_to:  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)

frontend/public/schemas/20251121/linkml/modules/classes/StateDistrictArchiveRecordSetType.yaml

@@ -17,15 +17,14 @@ imports:
   - ../slots/is_or_was_related_to
   - ../slots/specificity_annotation
   - ../slots/template_specificity
-  - ../slots/wikidata_equivalent
 classes:
   StateDistrictArchiveRecordSetType:
     description: A rico:RecordSetType for classifying collections from Czech  state district archives.
     is_a: CollectionType
     class_uri: rico:RecordSetType
+    exact_mappings:
+      - wd:Q53131316  # Wikidata (was: slot_usage wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     slot_usage:
-      wikidata_equivalent:
-        equals_string: Q53131316
       is_or_was_related_to:  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)
         range: WikidataAlignment
         inlined: true

frontend/public/schemas/20251121/linkml/modules/classes/StateRegionalArchiveCzechia.yaml

@@ -38,15 +38,13 @@ classes:
     - is_or_was_related_to  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)
     - has_or_had_identifier  # was: wikidata_entity - migrated per Rule 53 (2026-01-15)
     exact_mappings:
-    - wd:Q53130134
+      - wd:Q53130134  # Wikidata (was: slot_usage wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     close_mappings:
     - rico:CorporateBody
     - skos:Concept
     broad_mappings:
     - wd:Q166118
     slot_usage:
-      wikidata_equivalent:
-        equals_string: Q53130134
       has_or_had_custodian_type:
         equals_expression: '["hc:ArchiveOrganizationType"]'
       is_or_was_related_to:  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)

frontend/public/schemas/20251121/linkml/modules/classes/StateRegionalArchiveCzechiaRecordSetType.yaml

@@ -17,15 +17,14 @@ imports:
   - ../slots/is_or_was_related_to
   - ../slots/specificity_annotation
   - ../slots/template_specificity
-  - ../slots/wikidata_equivalent
 classes:
   StateRegionalArchiveCzechiaRecordSetType:
     description: A rico:RecordSetType for classifying collections from Czech  state regional archives.
     is_a: CollectionType
     class_uri: rico:RecordSetType
+    exact_mappings:
+      - wd:Q53130134  # Wikidata (was: slot_usage wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     slot_usage:
-      wikidata_equivalent:
-        equals_string: Q53130134
       is_or_was_related_to:  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)
         range: WikidataAlignment
         inlined: true

frontend/public/schemas/20251121/linkml/modules/classes/Subregion.yaml

@@ -7,20 +7,11 @@ imports:
   - ../slots/country
   - ../slots/iso_3166_2_code
   - ../slots/specificity_annotation
-  - ../slots/subdivision_name
+  - ../slots/has_or_had_label  # was: subdivision_name - migrated per Rule 53/56 (2026-01-17)
   - ../slots/template_specificity
   - ./SpecificityAnnotation
   - ./TemplateSpecificityScores
-  - ../slots/country
-  - ../slots/iso_3166_2_code
-  - ../slots/specificity_annotation
-  - ../slots/subdivision_name
-  - ../slots/template_specificity
-  - ../slots/country
-  - ../slots/iso_3166_2_code
-  - ../slots/specificity_annotation
-  - ../slots/subdivision_name
-  - ../slots/template_specificity
+  # Removed duplicate imports (2026-01-17)
 classes:
   Subregion:
     class_uri: lcc_cr:GeographicRegion
@@ -47,7 +38,7 @@ classes:
     - country
     - iso_3166_2_code
     - specificity_annotation
-    - subdivision_name
+    - has_or_had_label  # was: subdivision_name - migrated per Rule 53/56 (2026-01-17)
     - template_specificity
     slot_usage:
       iso_3166_2_code:
@@ -55,5 +46,10 @@ classes:
         identifier: true
       country:
         required: true
-      subdivision_name:
+      has_or_had_label:  # was: subdivision_name - migrated per Rule 53/56 (2026-01-17)
         required: false
+        description: |
+          Human-readable name of the subdivision.
+          
+          Prefer resolving names via GeoNames API to avoid maintaining multilingual data.
+          Examples: "Pennsylvania" (for US-PA), "Bali" (for ID-BA), "Bayern" (for DE-BY)

frontend/public/schemas/20251121/linkml/modules/classes/Supplier.yaml

@@ -0,0 +1,160 @@
+# Supplier - Main supplier entity class
+#
+# Created per slot_fixes.yaml revision for: supplier_relationship
+# Creation date: 2026-01-16
+# Rule compliance: 39 (RiC-O naming), 50 (ontology mapping), 53 (no bespoke slots)
+
+id: https://nde.nl/ontology/hc/class/Supplier
+name: supplier
+title: Supplier
+
+prefixes:
+  linkml: https://w3id.org/linkml/
+  hc: https://nde.nl/ontology/hc/
+  schema: http://schema.org/
+  gr: http://purl.org/goodrelations/v1#
+  org: http://www.w3.org/ns/org#
+
+default_prefix: hc
+
+imports:
+  - linkml:types
+  - ../slots/has_or_had_identifier
+  - ../slots/has_or_had_label
+  - ../slots/has_or_had_description
+  - ../slots/has_or_had_type
+  - ../slots/temporal_extent
+  - ./Label
+  - ./Description
+  - ./SupplierType
+  - ./TimeSpan
+
+classes:
+  Supplier:
+    class_uri: schema:Organization
+    description: |
+      Business entity that supplies goods or services to a heritage custodian.
+      
+      **PURPOSE**:
+      Models supplier relationships for commercial operations (gift shops, cafes, etc.)
+      in a structured way that captures:
+      - Supplier identity and contact
+      - Type of supplier (print, reproduction, service, etc.)
+      - Products/services provided
+      - Temporal validity of relationship
+      
+      **ONTOLOGY ALIGNMENT**:
+      - **Primary** (`class_uri`): `schema:Organization` - Schema.org organization
+      - **Close**: `gr:BusinessEntity` - GoodRelations business entity
+      - **Related**: `org:Organization` - W3C Org organization
+      
+      **USAGE**:
+      ```yaml
+      has_or_had_supplier:
+        - has_or_had_identifier: "hc:supplier/king-mcgaw"
+          has_or_had_label:
+            label_text: "King & McGaw"
+          has_or_had_type:
+            type_label: "Print Supplier"
+          has_or_had_description:
+            description_text: "Fine art print supplier for museum reproductions"
+          temporal_extent:
+            begin_of_the_begin: "2018-01-01"
+      ```
+      
+      **MIGRATION NOTE**:
+      Replaces plain string values from `supplier_relationship` slot.
+      Provides structured data with type classification and temporal tracking.
+      
+    slots:
+      - has_or_had_identifier
+      - has_or_had_label
+      - has_or_had_description
+      - has_or_had_type
+      - temporal_extent
+    
+    slot_usage:
+      has_or_had_identifier:
+        range: uriorcurie
+        description: Unique identifier for the supplier.
+        examples:
+          - value: "hc:supplier/king-mcgaw"
+            description: Supplier identifier CURIE
+      has_or_had_label:
+        range: Label
+        inlined: true
+        required: true
+        description: Name of the supplier organization.
+        examples:
+          - value:
+              label_text: "King & McGaw"
+            description: Art print supplier name
+          - value:
+              label_text: "Museum Reproductions Ltd"
+            description: Reproduction supplier name
+      has_or_had_description:
+        range: Description
+        inlined: true
+        description: Description of the supplier and what they provide.
+        examples:
+          - value:
+              description_text: "Fine art print supplier specializing in museum reproduction prints"
+            description: Supplier description
+      has_or_had_type:
+        range: SupplierType
+        inlined: true
+        multivalued: true
+        description: Classification of the supplier type.
+        examples:
+          - value:
+              has_or_had_label:
+                label_text: "Print Supplier"
+            description: Art print supplier type
+      temporal_extent:
+        range: TimeSpan
+        inlined: true
+        description: Time period of the supplier relationship.
+        examples:
+          - value:
+              begin_of_the_begin: "2018-01-01"
+            description: Relationship started January 2018
+    
+    exact_mappings:
+      - schema:Organization
+    close_mappings:
+      - gr:BusinessEntity
+    related_mappings:
+      - org:Organization
+    
+    examples:
+      - value:
+          has_or_had_identifier: "hc:supplier/king-mcgaw"
+          has_or_had_label:
+            label_text: "King & McGaw"
+          has_or_had_type:
+            - has_or_had_label:
+                label_text: "Print Supplier"
+          has_or_had_description:
+            description_text: "Leading supplier of fine art prints and museum reproduction services"
+          temporal_extent:
+            begin_of_the_begin: "2018-01-01"
+        description: Art print supplier
+      - value:
+          has_or_had_identifier: "hc:supplier/museum-reproductions-ltd"
+          has_or_had_label:
+            label_text: "Museum Reproductions Ltd"
+          has_or_had_type:
+            - has_or_had_label:
+                label_text: "Reproduction Supplier"
+          has_or_had_description:
+            description_text: "High-quality reproductions of museum artifacts"
+          temporal_extent:
+            begin_of_the_begin: "2015-06-01"
+            end_of_the_end: "2022-12-31"
+        description: Reproduction supplier (historical relationship)
+    
+    annotations:
+      custodian_types: '["*"]'
+      custodian_types_rationale: "Suppliers applicable to any custodian with commercial operations."
+      migration_source: "supplier_relationship string values"
+      migration_date: "2026-01-16"

frontend/public/schemas/20251121/linkml/modules/classes/SupplierType.yaml

@@ -0,0 +1,82 @@
+# SupplierType - Abstract base class for supplier type taxonomy
+#
+# Created per slot_fixes.yaml revision for: supplier_relationship
+# Creation date: 2026-01-16
+# Rule compliance: 0b (Type/Types naming), 39 (RiC-O naming), 50 (ontology mapping)
+
+id: https://nde.nl/ontology/hc/class/SupplierType
+name: supplier_type
+title: Supplier Type
+
+prefixes:
+  linkml: https://w3id.org/linkml/
+  hc: https://nde.nl/ontology/hc/
+  skos: http://www.w3.org/2004/02/skos/core#
+  schema: http://schema.org/
+  gr: http://purl.org/goodrelations/v1#
+
+default_prefix: hc
+
+imports:
+  - linkml:types
+  - ../slots/has_or_had_label
+  - ../slots/has_or_had_description
+  - ./Label
+  - ./Description
+
+classes:
+  SupplierType:
+    class_uri: skos:Concept
+    description: |
+      Abstract base class for supplier type taxonomy.
+      
+      **PURPOSE**:
+      Classifies types of suppliers in business relationships with heritage custodians.
+      
+      **USAGE**:
+      Concrete subclasses defined in SupplierTypes.yaml:
+      - PrintSupplier (print-on-demand, art prints)
+      - ReproductionSupplier (museum reproductions)
+      - PublicationDistributor (books, catalogs)
+      - ArtisanSupplier (local crafts, handmade items)
+      - LicenseHolder (exclusive merchandise rights)
+      - ServiceProvider (photography, framing, etc.)
+      
+      **ONTOLOGY ALIGNMENT**:
+      - `skos:Concept` - Taxonomy/classification concept
+      - `gr:BusinessEntity` - GoodRelations business classification
+      
+      **NAMING CONVENTION (Rule 0b)**:
+      - `SupplierType.yaml` - This abstract base class
+      - `SupplierTypes.yaml` - Concrete subclasses
+      
+    slots:
+      - has_or_had_label
+      - has_or_had_description
+    
+    slot_usage:
+      has_or_had_label:
+        range: Label
+        inlined: true
+        description: Human-readable label for the supplier type.
+        examples:
+          - value:
+              label_text: "Print Supplier"
+            description: Art print supplier type
+      has_or_had_description:
+        range: Description
+        inlined: true
+        description: Description of what this supplier type provides.
+        examples:
+          - value:
+              description_text: "Suppliers providing print-on-demand and art reproduction services"
+            description: Print supplier description
+    
+    exact_mappings:
+      - skos:Concept
+    close_mappings:
+      - gr:BusinessEntity
+    
+    annotations:
+      custodian_types: '["*"]'
+      custodian_types_rationale: "Supplier types applicable to any custodian with commercial operations."

frontend/public/schemas/20251121/linkml/modules/classes/SupplierTypes.yaml

@@ -0,0 +1,77 @@
+# SupplierTypes - Concrete supplier type subclasses
+#
+# Created per slot_fixes.yaml revision for: supplier_relationship
+# Creation date: 2026-01-16
+# Rule compliance: 0b (Type/Types naming), 39 (RiC-O naming)
+
+id: https://nde.nl/ontology/hc/class/SupplierTypes
+name: supplier_types
+title: Supplier Types
+
+prefixes:
+  linkml: https://w3id.org/linkml/
+  hc: https://nde.nl/ontology/hc/
+  skos: http://www.w3.org/2004/02/skos/core#
+
+default_prefix: hc
+
+imports:
+  - linkml:types
+  - ./SupplierType
+
+classes:
+  PrintSupplier:
+    is_a: SupplierType
+    class_uri: hc:PrintSupplier
+    description: |
+      Supplier providing print-on-demand and art reproduction services.
+      Examples: King & McGaw, Artful, Fine Art America
+    
+  ReproductionSupplier:
+    is_a: SupplierType
+    class_uri: hc:ReproductionSupplier
+    description: |
+      Supplier providing museum-quality reproductions of artifacts and artworks.
+      Examples: Museum Reproductions Ltd, Alva Studios
+    
+  PublicationDistributor:
+    is_a: SupplierType
+    class_uri: hc:PublicationDistributor
+    description: |
+      Distributor for books, catalogs, and publications.
+      Examples: Yale University Press, Thames & Hudson
+    
+  ArtisanSupplier:
+    is_a: SupplierType
+    class_uri: hc:ArtisanSupplier
+    description: |
+      Local artisan or craftsperson providing handmade items.
+      Examples: Local jewelry makers, traditional crafters
+    
+  LicenseHolder:
+    is_a: SupplierType
+    class_uri: hc:LicenseHolder
+    description: |
+      Entity holding exclusive licensing rights for merchandise.
+      Examples: Exclusive brand licensees, IP rights holders
+    
+  ServiceProvider:
+    is_a: SupplierType
+    class_uri: hc:ServiceProvider
+    description: |
+      Supplier providing services rather than products.
+      Examples: Photography services, framing services, packaging
+    
+  WholesaleSupplier:
+    is_a: SupplierType
+    class_uri: hc:WholesaleSupplier
+    description: |
+      Bulk/wholesale supplier for general merchandise.
+      Examples: Museum store wholesalers, gift trade suppliers
+    
+  DigitalContentSupplier:
+    is_a: SupplierType
+    class_uri: hc:DigitalContentSupplier
+    description: |
+      Supplier of digital products and content.
+      Examples: Digital image libraries, audio guide providers

frontend/public/schemas/20251121/linkml/modules/classes/TelevisionArchive.yaml

@@ -39,15 +39,13 @@ classes:
     - is_or_was_related_to  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)
     - has_or_had_identifier  # was: wikidata_entity - migrated per Rule 53 (2026-01-15)
     exact_mappings:
-    - wd:Q109326243
+      - wd:Q109326243  # Wikidata (was: slot_usage wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     close_mappings:
     - rico:CorporateBody
     - skos:Concept
     broad_mappings:
     - wd:Q166118
     slot_usage:
-      wikidata_equivalent:
-        equals_string: Q109326243
       has_or_had_custodian_type:
         equals_expression: '["hc:ArchiveOrganizationType"]'
       is_or_was_related_to:  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)

frontend/public/schemas/20251121/linkml/modules/classes/TelevisionArchiveRecordSetType.yaml

@@ -17,15 +17,14 @@ imports:
   - ../slots/is_or_was_related_to
   - ../slots/specificity_annotation
   - ../slots/template_specificity
-  - ../slots/wikidata_equivalent
 classes:
   TelevisionArchiveRecordSetType:
     description: A rico:RecordSetType for classifying collections of television  programs, recordings, and broadcast materials.
     is_a: CollectionType
     class_uri: rico:RecordSetType
+    exact_mappings:
+      - wd:Q109326243  # Wikidata (was: slot_usage wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     slot_usage:
-      wikidata_equivalent:
-        equals_string: Q109326243
       is_or_was_related_to:  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)
         range: WikidataAlignment
         inlined: true

frontend/public/schemas/20251121/linkml/modules/classes/UniversityArchive.yaml

@@ -38,15 +38,13 @@ classes:
     - is_or_was_related_to  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)
     - has_or_had_identifier  # was: wikidata_entity - migrated per Rule 53 (2026-01-15)
     exact_mappings:
-    - wd:Q2496264
+      - wd:Q2496264  # Wikidata (was: slot_usage wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     close_mappings:
     - rico:CorporateBody
     - skos:Concept
     broad_mappings:
     - wd:Q166118
     slot_usage:
-      wikidata_equivalent:
-        equals_string: Q2496264
       has_or_had_custodian_type:
         equals_expression: '["hc:ArchiveOrganizationType"]'
       is_or_was_related_to:  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)

frontend/public/schemas/20251121/linkml/modules/classes/UniversityArchiveRecordSetType.yaml

@@ -17,16 +17,15 @@ imports:
   - ../slots/is_or_was_related_to
   - ../slots/specificity_annotation
   - ../slots/template_specificity
-  - ../slots/wikidata_equivalent
 classes:
   UniversityArchiveRecordSetType:
     description: A rico:RecordSetType for classifying collections of university  and college historical records and institutional
       documentation.
     is_a: CollectionType
     class_uri: rico:RecordSetType
+    exact_mappings:
+      - wd:Q2496264  # Wikidata (was: slot_usage wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     slot_usage:
-      wikidata_equivalent:
-        equals_string: Q2496264
       is_or_was_related_to:  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)
         range: WikidataAlignment
         inlined: true

frontend/public/schemas/20251121/linkml/modules/classes/Vereinsarchiv.yaml

@@ -1,6 +1,11 @@
 id: https://nde.nl/ontology/hc/class/Vereinsarchiv
 name: Vereinsarchiv
 title: Vereinsarchiv Type
+prefixes:
+  linkml: https://w3id.org/linkml/
+  hc: https://nde.nl/ontology/hc/
+  skos: http://www.w3.org/2004/02/skos/core#
+  wd: http://www.wikidata.org/entity/
 imports:
   - linkml:types
   - ./ArchiveOrganizationType
@@ -25,6 +30,8 @@ classes:
       document the activities, governance, membership, and  cultural contributions of civil society organizations.
     is_a: ArchiveOrganizationType
     class_uri: skos:Concept
+    exact_mappings:
+      - wd:Q130758889  # Wikidata: Vereinsarchiv (was: slot_usage wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     slots:
     - has_or_had_custodian_type
     - specificity_annotation
@@ -32,8 +39,6 @@ classes:
     - is_or_was_related_to  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)
     - has_or_had_identifier  # was: wikidata_entity - migrated per Rule 53 (2026-01-15)
     slot_usage:
-      wikidata_equivalent:
-        equals_string: Q130758889
       has_or_had_custodian_type:
         equals_expression: '["hc:ArchiveOrganizationType"]'
       is_or_was_related_to:  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)

frontend/public/schemas/20251121/linkml/modules/classes/VereinsarchivRecordSetType.yaml

@@ -6,6 +6,7 @@ prefixes:
   schema: http://schema.org/
   skos: http://www.w3.org/2004/02/skos/core#
   rico: https://www.ica.org/standards/RiC/ontology#
+  wd: http://www.wikidata.org/entity/
 imports:
   - linkml:types
   - ./CollectionType
@@ -21,14 +22,14 @@ classes:
     description: A rico:RecordSetType for classifying collections from German  association and club archives.
     is_a: CollectionType
     class_uri: rico:RecordSetType
+    exact_mappings:
+      - wd:Q130758889  # Wikidata (was: slot_usage wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     slots:
     - specificity_annotation
     - template_specificity
     - is_or_was_related_to  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)
     - has_or_had_identifier  # was: wikidata_entity - migrated per Rule 53 (2026-01-15)
     slot_usage:
-      wikidata_equivalent:
-        equals_string: Q130758889
       is_or_was_related_to:  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)
         range: WikidataAlignment
         inlined: true

frontend/public/schemas/20251121/linkml/modules/classes/Verlagsarchiv.yaml

@@ -1,6 +1,11 @@
 id: https://nde.nl/ontology/hc/class/Verlagsarchiv
 name: Verlagsarchiv
 title: Verlagsarchiv Type
+prefixes:
+  linkml: https://w3id.org/linkml/
+  hc: https://nde.nl/ontology/hc/
+  skos: http://www.w3.org/2004/02/skos/core#
+  wd: http://www.wikidata.org/entity/
 imports:
   - linkml:types
   - ./ArchiveOrganizationType
@@ -25,6 +30,8 @@ classes:
       contracts, marketing materials, and documentation of  book production and distribution activities.
     is_a: ArchiveOrganizationType
     class_uri: skos:Concept
+    exact_mappings:
+      - wd:Q130759004  # Wikidata: Verlagsarchiv (was: slot_usage wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     slots:
     - has_or_had_custodian_type
     - specificity_annotation
@@ -32,8 +39,6 @@ classes:
     - is_or_was_related_to  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)
     - has_or_had_identifier  # was: wikidata_entity - migrated per Rule 53 (2026-01-15)
     slot_usage:
-      wikidata_equivalent:
-        equals_string: Q130759004
       has_or_had_custodian_type:
         equals_expression: '["hc:ArchiveOrganizationType"]'
       is_or_was_related_to:  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)

frontend/public/schemas/20251121/linkml/modules/classes/VerlagsarchivRecordSetType.yaml

@@ -6,6 +6,7 @@ prefixes:
   schema: http://schema.org/
   skos: http://www.w3.org/2004/02/skos/core#
   rico: https://www.ica.org/standards/RiC/ontology#
+  wd: http://www.wikidata.org/entity/
 imports:
   - linkml:types
   - ./CollectionType
@@ -21,14 +22,14 @@ classes:
     description: A rico:RecordSetType for classifying collections from German  publishing house archives.
     is_a: CollectionType
     class_uri: rico:RecordSetType
+    exact_mappings:
+      - wd:Q130759004  # Wikidata (was: slot_usage wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     slots:
     - specificity_annotation
     - template_specificity
     - is_or_was_related_to  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)
     - has_or_had_identifier  # was: wikidata_entity - migrated per Rule 53 (2026-01-15)
     slot_usage:
-      wikidata_equivalent:
-        equals_string: Q130759004
       is_or_was_related_to:  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)
         range: WikidataAlignment
         inlined: true

frontend/public/schemas/20251121/linkml/modules/classes/Verwaltungsarchiv.yaml

@@ -1,6 +1,11 @@
 id: https://nde.nl/ontology/hc/class/Verwaltungsarchiv
 name: Verwaltungsarchiv
 title: Verwaltungsarchiv Type
+prefixes:
+  linkml: https://w3id.org/linkml/
+  hc: https://nde.nl/ontology/hc/
+  skos: http://www.w3.org/2004/02/skos/core#
+  wd: http://www.wikidata.org/entity/
 imports:
   - linkml:types
   - ./ArchiveOrganizationType
@@ -23,14 +28,14 @@ classes:
       and administrative decision-making, typically  from government agencies or large organizations.
     is_a: ArchiveOrganizationType
     class_uri: skos:Concept
+    exact_mappings:
+      - wd:Q2519292  # Wikidata: Verwaltungsarchiv (was: slot_usage wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     slots:
     - specificity_annotation
     - template_specificity
     - is_or_was_related_to  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)
     - has_or_had_identifier  # was: wikidata_entity - migrated per Rule 53 (2026-01-15)
     slot_usage:
-      wikidata_equivalent:
-        equals_string: Q2519292
       is_or_was_related_to:  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)
         range: WikidataAlignment
         inlined: true

frontend/public/schemas/20251121/linkml/modules/classes/VerwaltungsarchivRecordSetType.yaml

@@ -6,6 +6,7 @@ prefixes:
   schema: http://schema.org/
   skos: http://www.w3.org/2004/02/skos/core#
   rico: https://www.ica.org/standards/RiC/ontology#
+  wd: http://www.wikidata.org/entity/
 imports:
   - linkml:types
   - ./CollectionType
@@ -20,14 +21,14 @@ classes:
     description: A rico:RecordSetType for classifying collections of administrative  records and bureaucratic documentation.
     is_a: CollectionType
     class_uri: rico:RecordSetType
+    exact_mappings:
+      - wd:Q2519292  # Wikidata (was: slot_usage wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     slots:
     - specificity_annotation
     - template_specificity
     - is_or_was_related_to  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)
     - has_or_had_identifier  # was: wikidata_entity - migrated per Rule 53 (2026-01-15)
     slot_usage:
-      wikidata_equivalent:
-        equals_string: Q2519292
       is_or_was_related_to:  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)
         range: WikidataAlignment
         inlined: true

frontend/public/schemas/20251121/linkml/modules/classes/WebArchive.yaml

@@ -39,7 +39,7 @@ classes:
     - is_or_was_related_to  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)
     - has_or_had_identifier  # was: wikidata_entity - migrated per Rule 53 (2026-01-15)
     exact_mappings:
-    - wd:Q30047053
+      - wd:Q30047053  # Wikidata (was: slot_usage wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     close_mappings:
     - rico:CorporateBody
     - skos:Concept
@@ -48,8 +48,6 @@ classes:
     mixins:
     - DigitalPlatformType
     slot_usage:
-      wikidata_equivalent:
-        equals_string: Q30047053
       platform_type_id:
         identifier: false
       has_or_had_custodian_type:

frontend/public/schemas/20251121/linkml/modules/classes/WebArchiveRecordSetType.yaml

@@ -17,15 +17,14 @@ imports:
   - ../slots/is_or_was_related_to
   - ../slots/specificity_annotation
   - ../slots/template_specificity
-  - ../slots/wikidata_equivalent
 classes:
   WebArchiveRecordSetType:
     description: A rico:RecordSetType for classifying collections of preserved  web pages and archived online content.
     is_a: CollectionType
     class_uri: rico:RecordSetType
+    exact_mappings:
+      - wd:Q30047053  # Wikidata (was: slot_usage wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     slot_usage:
-      wikidata_equivalent:
-        equals_string: Q30047053
       is_or_was_related_to:  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)
         range: WikidataAlignment
         inlined: true

frontend/public/schemas/20251121/linkml/modules/classes/WebPortal.yaml

@@ -47,7 +47,7 @@ imports:
   - ../slots/portal_url
   - ../slots/record_count
   - ../slots/specificity_annotation
-  - ../slots/successor_portal
+  - ../slots/supersedes_or_superseded  # was: successor_portal - migrated per Rule 53/56 (2026-01-17)
   - ../slots/template_specificity
   - ../slots/temporal_extent
   - ../slots/has_or_had_scope  # was: thematic_scope - migrated per Rule 53
@@ -121,7 +121,7 @@ classes:
       \ records\n\n**ONTOLOGY ALIGNMENT**:\n\n- **EDM** (`edm:Aggregation`): Primary mapping - portal aggregates CHOs\n- **ORE**\
       \ (`ore:Aggregation`): Object Reuse and Exchange aggregation\n- **Schema.org** (`schema:WebSite` + `schema:DataCatalog`):\
       \ Web presence + data catalog\n- **DCMI Type** (`dcmitype:Collection`): Collection of metadata records\n\n**LIFECYCLE\
-      \ AND MIGRATION**:\n\nPortals evolve over time:\n- New portals launch\n- Portals merge (use `successor_portal`)\n- Portals\
+      \ AND MIGRATION**:\n\nPortals evolve over time:\n- New portals launch\n- Portals merge (use `supersedes_or_superseded`)\n- Portals\
       \ become legacy but remain accessible\n- Portal scope expands (regional → national)\n\nTrack status with `portal_status`:\
       \ ACTIVE, LEGACY, DEPRECATED, MERGED\n"
     exact_mappings:
@@ -163,7 +163,7 @@ classes:
     - serves_finding_aid
     - sparql_endpoint
     - specificity_annotation
-    - successor_portal
+    - supersedes_or_superseded  # was: successor_portal - migrated per Rule 53/56 (2026-01-17)
     - template_specificity
     - temporal_extent
     - has_or_had_scope  # was: thematic_scope - migrated per Rule 53
@@ -308,8 +308,11 @@ classes:
         examples:
         - value: ACTIVE
         - value: LEGACY
-      successor_portal:
+      supersedes_or_superseded:  # was: successor_portal - migrated per Rule 53/56 (2026-01-17)
         range: uriorcurie
+        description: |
+          Portal that replaced this one (if deprecated or merged), or that this portal replaced.
+          MIGRATED from successor_portal per Rule 53/56 (2026-01-17).
         examples:
         - value: https://nde.nl/ontology/hc/portal/nl/new-archieven-portal
           description: Hypothetical successor portal
@@ -411,7 +414,7 @@ classes:
     - WebPortal AGGREGATES metadata from multiple institutions
     - 'Portals form aggregation chains: regional → national → European'
     - Typically operated by EncompassingBody (Network, Consortium)
-    - Track lifecycle with portal_status and successor_portal
+    - Track lifecycle with portal_status and supersedes_or_superseded
     - 'NEW: data_license_policy links to portal''s licensing stance (CC0, CC-BY, etc.)'
     - 'NEW: created_by_project links to Project that built the portal'
     - 'NEW: is_or_was_associated_with for organizational relationships beyond operator (migrated from associated_encompassing_bodies)'

frontend/public/schemas/20251121/linkml/modules/classes/WebPortalTypes.yaml

@@ -37,7 +37,7 @@ imports:
   - ../slots/portal_typical_domain
   - ../slots/published_by
   - ../slots/specificity_annotation
-  - ../slots/succeeded_by
+  - ../slots/is_or_was_superseded_by  # was: succeeded_by - migrated per Rule 53/56 (2026-01-17)
   - ../slots/template_specificity
 classes:
   NationalAggregator:
@@ -1171,7 +1171,7 @@ classes:
       \ status is tied to observation B's TimeSpan (2023-06-15)\n- Whether a user queries this in 2023 or 2030 does not change\
       \ the semantic\n  content - the cessation was observed on 2023-06-15\n\n**CHARACTERISTICS**:\n- No longer actively maintained\
       \ (as of observation TimeSpan)\n- May contain unique historical data\n- Redirects to successor platforms\n- Preserved\
-      \ for link persistence\n- Documentation of historical context\n\n**SUCCESSOR TRACKING**:\nUse `succeeded_by` slot to\
+      \ for link persistence\n- Documentation of historical context\n\n**SUCCESSOR TRACKING**:\nUse `is_or_was_superseded_by` slot to\
       \ link to replacement portal(s):\n- One-to-one succession (portal replaced by single successor)\n- One-to-many succession\
       \ (portal split into multiple successors)\n- Many-to-one succession (multiple portals merged into one)\n\n**USE CASES**:\n\
       - Superseded regional portals\n- Merged aggregation services\n- Discontinued projects\n- Archived web platforms\n"
@@ -1181,7 +1181,7 @@ classes:
     slots:
     - cessation_observed_in
     - specificity_annotation
-    - succeeded_by
+    - is_or_was_superseded_by  # was: succeeded_by - migrated per Rule 53/56 (2026-01-17)
     - template_specificity
     comments:
     - Legacy/deprecated heritage portal

frontend/public/schemas/20251121/linkml/modules/classes/WomensArchives.yaml

@@ -38,15 +38,13 @@ classes:
     - is_or_was_related_to  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)
     - has_or_had_identifier  # was: wikidata_entity - migrated per Rule 53 (2026-01-15)
     exact_mappings:
-    - wd:Q130217628
+      - wd:Q130217628  # Wikidata (was: slot_usage wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     close_mappings:
     - rico:CorporateBody
     - skos:Concept
     broad_mappings:
     - wd:Q166118
     slot_usage:
-      wikidata_equivalent:
-        equals_string: Q130217628
       has_or_had_custodian_type:
         equals_expression: '["hc:ArchiveOrganizationType"]'
       is_or_was_related_to:  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)

frontend/public/schemas/20251121/linkml/modules/classes/WomensArchivesRecordSetType.yaml

@@ -17,16 +17,15 @@ imports:
   - ../slots/is_or_was_related_to
   - ../slots/specificity_annotation
   - ../slots/template_specificity
-  - ../slots/wikidata_equivalent
 classes:
   WomensArchivesRecordSetType:
     description: A rico:RecordSetType for classifying collections documenting  women's history, feminist movements, and women's
       experiences.
     is_a: CollectionType
     class_uri: rico:RecordSetType
+    exact_mappings:
+      - wd:Q130217628  # Wikidata (was: slot_usage wikidata_equivalent - migrated per Rule 53, 2026-01-17)
     slot_usage:
-      wikidata_equivalent:
-        equals_string: Q130217628
       is_or_was_related_to:  # was: wikidata_alignment - migrated per Rule 53 (2026-01-15)
         range: WikidataAlignment
         inlined: true

frontend/public/schemas/20251121/linkml/modules/slots/has_or_had_geographic_subdivision.yaml

@@ -0,0 +1,103 @@
+# has_or_had_geographic_subdivision slot
+# Generic slot for geographic subdivision (state, province, region, etc.)
+#
+# Migration: Replaces domain-specific 'subregion' slot per slot_fixes.yaml
+# Following RiC-O naming convention (Rule 39): "hasOrHad..." pattern
+# for temporal relationships in heritage domain.
+#
+# Generation date: 2026-01-17
+# Rule compliance: 38 (slot centralization + semantic URI), 39 (RiC-O naming), 42 (no prefix), 53 (no bespoke slots), 55 (broadened range), 56 (execute revisions)
+
+id: https://nde.nl/ontology/hc/slot/has_or_had_geographic_subdivision
+name: has_or_had_geographic_subdivision_slot
+title: Has Or Had Geographic Subdivision Slot
+
+prefixes:
+  linkml: https://w3id.org/linkml/
+  hc: https://nde.nl/ontology/hc/
+  schema: http://schema.org/
+  locn: http://www.w3.org/ns/locn#
+  lcc_cr: https://www.omg.org/spec/LCC/Countries/CountryRepresentation/
+  gn: http://www.geonames.org/ontology#
+
+default_prefix: hc
+
+imports:
+  - linkml:types
+
+slots:
+  has_or_had_geographic_subdivision:
+    slot_uri: lcc_cr:isSubregionOf
+    description: |
+      Geographic subdivision within a country (state, province, region, department, etc.).
+      
+      **Temporal Semantics** (RiC-O Pattern):
+      The "hasOrHad" naming follows RiC-O convention indicating this relationship
+      may be historical - an entity may have been located in different subdivisions
+      over time (e.g., due to boundary changes, administrative reorganization).
+      
+      **Geographic Hierarchy**:
+      Country → GeographicSubdivision (this slot) → Settlement
+      
+      **Identifier Format**:
+      ISO 3166-2 codes: {country_alpha2}-{subdivision_code}
+      Examples: US-PA (Pennsylvania), ID-BA (Bali), DE-BY (Bavaria), NL-LI (Limburg)
+      
+      **Ontological Alignment**:
+      - **Primary** (`slot_uri`): `lcc_cr:isSubregionOf` - OMG Languages Countries and Codes
+      - **Exact**: `schema:addressRegion` - Schema.org administrative region
+      - **Close**: `locn:adminUnitL2` - INSPIRE administrative unit level 2
+      - **Close**: `gn:A.ADM1` - GeoNames first-order administrative division
+      
+      **Use Cases**:
+      - Place is located in a specific subdivision (e.g., "Pittsburgh museum" → US-PA)
+      - Feature types are region-specific (e.g., "sacred shrine (Bali)" → ID-BA)
+      - Legal jurisdiction at subnational level (e.g., Bavarian archive law)
+      - Generating GHCID region codes
+      
+      **Range**: `uriorcurie` (Rule 55) - Allows both:
+      - URI references to Subregion class instances
+      - Direct ISO 3166-2 code CURIEs
+      
+      **Migration Note** (2026-01-17):
+      Replaces domain-specific `subregion` slot per slot_fixes.yaml revision.
+      Provides generic predicate name applicable across geographic contexts.
+      
+    range: uriorcurie  # Per Rule 55 - broadened to allow class and CURIE values
+    required: false
+    multivalued: false
+    
+    exact_mappings:
+      - schema:addressRegion
+    
+    close_mappings:
+      - locn:adminUnitL2
+      - gn:A.ADM1
+    
+    related_mappings:
+      - lcc_cr:GeographicRegion
+    
+    annotations:
+      rico_naming_convention: |
+        Follows RiC-O "hasOrHad" pattern for temporal predicates.
+        See Rule 39: Slot Naming Convention (RiC-O Style)
+      replaces_slots: "subregion"
+      migration_date: "2026-01-17"
+      iso_standard: "ISO 3166-2"
+    
+    comments:
+      - "Generic geographic subdivision slot (state, province, region, etc.)"
+      - "Uses ISO 3166-2 codes for unambiguous identification"
+      - "RiC-O naming: hasOrHad indicates potentially historical relationship"
+      - "Replaces domain-specific 'subregion' slot (2026-01-17)"
+      - "Range is Subregion class or direct ISO 3166-2 CURIE"
+    
+    examples:
+      - value: https://nde.nl/ontology/hc/subregion/US-PA
+        description: "Pennsylvania, United States"
+      - value: https://nde.nl/ontology/hc/subregion/ID-BA
+        description: "Bali, Indonesia"
+      - value: https://nde.nl/ontology/hc/subregion/DE-BY
+        description: "Bavaria (Bayern), Germany"
+      - value: https://nde.nl/ontology/hc/subregion/NL-LI
+        description: "Limburg, Netherlands"

frontend/public/schemas/20251121/linkml/modules/slots/has_or_had_subject.yaml

@@ -0,0 +1,105 @@
+# has_or_had_subject slot
+# Generic slot for subject/topic associations
+#
+# Migration: Replaces domain-specific 'subject_depicted' slot per slot_fixes.yaml
+# Following RiC-O naming convention (Rule 39): "hasOrHad..." pattern
+# for temporal relationships in heritage domain.
+#
+# Generation date: 2026-01-17
+# Rule compliance: 38 (slot centralization + semantic URI), 39 (RiC-O naming), 42 (no prefix), 53 (no bespoke slots), 55 (broadened range), 56 (execute revisions)
+
+id: https://nde.nl/ontology/hc/slot/has_or_had_subject
+name: has_or_had_subject_slot
+title: Has Or Had Subject Slot
+
+prefixes:
+  linkml: https://w3id.org/linkml/
+  hc: https://nde.nl/ontology/hc/
+  schema: http://schema.org/
+  dcterms: http://purl.org/dc/terms/
+  skos: http://www.w3.org/2004/02/skos/core#
+  crm: http://www.cidoc-crm.org/cidoc-crm/
+
+default_prefix: hc
+
+imports:
+  - linkml:types
+
+slots:
+  has_or_had_subject:
+    slot_uri: schema:about
+    description: |
+      Subject matter, theme, or topic depicted, described, or associated with an entity.
+      
+      **Temporal Semantics** (RiC-O Pattern):
+      The "hasOrHad" naming follows RiC-O convention indicating this relationship
+      may be historical - an entity may have different subject associations over time
+      (e.g., reattribution of artwork subject, reinterpretation of archival content).
+      
+      **Use Cases**:
+      - **Artwork subjects**: Themes depicted in paintings, sculptures, photographs
+      - **Archival subjects**: Topics covered in document collections
+      - **Collection subjects**: Thematic focus of a collection
+      - **Exhibition subjects**: Themes explored in an exhibition
+      
+      **Controlled Vocabularies** (Recommended):
+      - **AAT** (Getty Art & Architecture Thesaurus): Art and artifact subjects
+      - **Iconclass**: Iconographic classification (e.g., "31A221 - portrait of a woman")
+      - **LCSH** (Library of Congress Subject Headings): General subjects
+      - **UNESCO Thesaurus**: Cultural heritage subjects
+      
+      **Ontological Alignment**:
+      - **Primary** (`slot_uri`): `schema:about` - Schema.org subject property
+      - **Exact**: `dcterms:subject` - Dublin Core subject
+      - **Close**: `crm:P62_depicts` - CIDOC-CRM visual depiction
+      - **Close**: `skos:broader/narrower` - SKOS conceptual relationships
+      
+      **Range**: `uriorcurie` (Rule 55) - Allows both:
+      - Direct string values for simple subjects
+      - URI references to Subject class instances or controlled vocabulary terms
+      
+      **Migration Note** (2026-01-17):
+      Replaces domain-specific `subject_depicted` slot per slot_fixes.yaml revision.
+      Provides generic predicate name applicable across heritage object contexts.
+      
+    range: uriorcurie  # Per Rule 55 - broadened to allow class and string/CURIE values
+    required: false
+    multivalued: true
+    
+    exact_mappings:
+      - dcterms:subject
+    
+    close_mappings:
+      - crm:P62_depicts
+      - skos:Concept
+    
+    related_mappings:
+      - crm:P129_is_about
+      - schema:keywords
+    
+    annotations:
+      rico_naming_convention: |
+        Follows RiC-O "hasOrHad" pattern for temporal predicates.
+        See Rule 39: Slot Naming Convention (RiC-O Style)
+      replaces_slots: "subject_depicted, subject_area (partial)"
+      migration_date: "2026-01-17"
+      controlled_vocabularies: "AAT, Iconclass, LCSH, UNESCO Thesaurus"
+    
+    comments:
+      - "Generic subject/topic association slot"
+      - "Use controlled vocabularies (AAT, Iconclass, LCSH) where possible"
+      - "RiC-O naming: hasOrHad indicates potentially historical relationship"
+      - "Replaces domain-specific 'subject_depicted' slot (2026-01-17)"
+      - "Range allows strings or URI references to Subject class"
+    
+    examples:
+      - value: portrait
+        description: "Simple string subject for artwork"
+      - value: girl
+        description: "Figure subject"
+      - value: pearl earring
+        description: "Object subject"
+      - value: aat:300015637
+        description: "AAT term for 'portraits' via CURIE"
+      - value: iconclass:31A221
+        description: "Iconclass term for 'portrait of a woman'"

frontend/public/schemas/20251121/linkml/modules/slots/has_or_had_supplier.yaml

@@ -0,0 +1,72 @@
+# has_or_had_supplier - Supplier relationship slot
+#
+# Created per slot_fixes.yaml revision for: supplier_relationship
+# Creation date: 2026-01-16
+# Rule compliance: 39 (RiC-O naming), 50 (ontology mapping), 53 (no bespoke slots), 56 (semantic consistency)
+
+id: https://nde.nl/ontology/hc/slot/has_or_had_supplier
+name: has_or_had_supplier
+title: Has or Had Supplier
+
+prefixes:
+  linkml: https://w3id.org/linkml/
+  hc: https://nde.nl/ontology/hc/
+  schema: http://schema.org/
+  gr: http://purl.org/goodrelations/v1#
+  org: http://www.w3.org/ns/org#
+
+default_prefix: hc
+
+imports:
+  - linkml:types
+
+slots:
+  has_or_had_supplier:
+    slot_uri: hc:hasOrHadSupplier
+    description: |
+      Supplier relationship for an organization or commercial operation.
+      
+      **USAGE**:
+      Used for modeling business relationships with suppliers:
+      - Merchandise suppliers for gift shops
+      - Print-on-demand partners
+      - Publication distributors
+      - Service providers
+      - Licensing partners
+      
+      **ONTOLOGY ALIGNMENT**:
+      - **Primary** (`slot_uri`): `hc:hasOrHadSupplier` - Heritage Custodian property
+      - **Close**: `schema:supplier` - Schema.org supplier relationship
+      - **Close**: `gr:hasBrand` - GoodRelations brand/supplier
+      - **Related**: `org:linkedTo` - W3C Org general organizational link
+      
+      **TEMPORAL SEMANTICS** (Rule 39):
+      The "hasOrHad" pattern indicates this relationship may have temporal validity.
+      Supplier relationships can change over time - contracts end, new partnerships form.
+      
+      **MIGRATION NOTE**:
+      Created to replace bespoke `supplier_relationship` slot per Rule 53/56.
+      Provides structured Supplier class instead of plain string values.
+      
+    range: uriorcurie  # Broadened per Rule 55 - classes narrow via slot_usage
+    multivalued: true
+    
+    exact_mappings:
+      - schema:supplier
+    close_mappings:
+      - gr:hasBrand
+    related_mappings:
+      - org:linkedTo
+    
+    examples:
+      - value: "hc:Supplier/king-mcgaw"
+        description: Art print supplier (CURIE reference)
+      - value: "hc:Supplier/museum-reproductions-ltd"
+        description: Reproduction supplier (CURIE reference)
+    
+    annotations:
+      custodian_types: '["G", "M", "L", "A", "S"]'
+      custodian_types_rationale: "Supplier relationships primarily relevant for galleries, museums, libraries, archives, and societies with retail operations."
+      migration_source: "supplier_relationship"
+      migration_date: "2026-01-16"
+      migration_rule: "Rule 53/56"

frontend/public/schemas/20251121/linkml/modules/slots/is_or_was_superseded_by.yaml

@@ -0,0 +1,72 @@
+# is_or_was_superseded_by - Supersession relationship with RiC-O temporal semantics
+#
+# Created per slot_fixes.yaml migration for: superseded_by
+# Migration date: 2026-01-16
+# Rule 53/56: Generic reusable slot instead of bespoke superseded_by
+# Rule 39: RiC-O temporal naming convention (is_or_was_*)
+
+id: https://nde.nl/ontology/hc/slot/is_or_was_superseded_by
+name: is_or_was_superseded_by_slot
+title: Is Or Was Superseded By
+
+prefixes:
+  linkml: https://w3id.org/linkml/
+  hc: https://nde.nl/ontology/hc/
+  dcterms: http://purl.org/dc/terms/
+  prov: http://www.w3.org/ns/prov#
+  rico: https://www.ica.org/standards/RiC/ontology#
+
+default_prefix: hc
+
+imports:
+  - linkml:types
+
+slots:
+  is_or_was_superseded_by:
+    slot_uri: hc:isOrWasSupersededBy
+    range: uriorcurie
+    description: |
+      Reference to an entity that supersedes, replaces, or succeeds this one.
+      
+      **TEMPORAL SEMANTICS** (RiC-O naming convention):
+      The "is_or_was" prefix indicates this relationship may be:
+      - Current (active supersession)
+      - Historical (past supersession in a chain)
+      
+      **USAGE**:
+      Used to track version chains and replacement relationships:
+      - Finding aid versions (v1 → v2 → v3)
+      - Assertion updates (old assertion → new assertion)
+      - Document versions (original → amended)
+      
+      **PROVENANCE PATTERN**:
+      For temporal tracking, combine with `temporal_extent` to record
+      WHEN the supersession occurred:
+      ```yaml
+      is_or_was_superseded_by: https://example.org/finding-aid/v2
+      temporal_extent:
+        end_of_the_end: "2025-06-15"  # Date when superseded
+      ```
+      
+      **MIGRATED FROM**: superseded_by (2026-01-16)
+      - Original slot_uri preserved in exact_mappings
+      - Changed from range:uri to range:uriorcurie per Rule 55
+      - Renamed per Rule 39 (RiC-O temporal naming)
+      
+      Dublin Core: isReplacedBy - "A related resource that supplants, 
+      displaces, or supersedes the described resource."
+    exact_mappings:
+      - dcterms:isReplacedBy
+      - hc:supersededBy  # Original slot_uri preserved
+    close_mappings:
+      - prov:wasInvalidatedBy
+    related_mappings:
+      - rico:isOrWasSuccessorOf
+    comments:
+      - Uses uriorcurie range to allow both full URIs and compact CURIEs
+      - Classes can narrow range via slot_usage to specific class types (e.g., Entity)
+      - Temporal context should be tracked via temporal_extent slot when needed
+    annotations:
+      migration_source: superseded_by
+      migration_date: "2026-01-16"
+      migration_rule: "Rule 53/56 - Generic slots, semantic consistency"