Refactor schema slots and classes for improved organization and clarity

- Removed deprecated slots: appraisal_notes, branch_id, is_or_was_real. - Introduced new slots: has_or_had_notes, has_or_had_provenance. - Created Notes class to encapsulate note-related metadata. - Archived removed slots and classes in accordance with the new archive folder convention. - Updated slot_fixes.yaml to reflect migration status and details. - Enhanced documentation for new slots and classes, ensuring compliance with ontology alignment. - Added new slots for note content, date, and type to support the Notes class.
2026-01-14 12:14:07 +01:00 · 2026-01-14 12:14:07 +01:00 · b13674400f
commit b13674400f
parent b8914761b8
112 changed files with 3043228 additions and 6716 deletions
--- a/.opencode/rules/archive-folder-convention.md
+++ b/.opencode/rules/archive-folder-convention.md
@ -0,0 +1,98 @@
+# Rule: Archive Folder Convention
+
+**Rule ID**: archive-folder-convention  
+**Created**: 2026-01-14  
+**Status**: Active
+
+## Summary
+
+All archived files MUST be placed in an `/archive/` subfolder within their parent directory, NOT at the same level as active files.
+
+## Rationale
+
+1. **Clean separation**: Active files are clearly distinguished from deprecated/archived files
+2. **Discoverability**: Developers can easily find current files without wading through archived versions
+3. **Git history**: Archive folder can be `.gitignore`d for lightweight clones if needed
+4. **Consistent pattern**: Same structure across all schema module types (slots, classes, enums)
+
+## Directory Structure
+
+```
+modules/
+├── slots/
+│   ├── archive/                    # Archived slot files go HERE
+│   │   ├── branch_id_archived_20260114.yaml
+│   │   ├── all_data_real_archived_20260114.yaml
+│   │   └── ...
+│   ├── has_or_had_identifier.yaml  # Active slots at this level
+│   └── ...
+├── classes/
+│   ├── archive/                    # Archived class files go HERE
+│   │   └── ...
+│   └── ...
+└── enums/
+    ├── archive/                    # Archived enum files go HERE
+    │   └── ...
+    └── ...
+```
+
+## Naming Convention for Archived Files
+
+```
+{original_filename}_archived_{YYYYMMDD}.yaml
+```
+
+**Examples**:
+- `branch_id.yaml` → `archive/branch_id_archived_20260114.yaml`
+- `RealnessStatus.yaml` → `archive/RealnessStatus_archived_20260114.yaml`
+
+## Migration Workflow
+
+When archiving a file during slot migration:
+
+```bash
+# 1. Copy to archive folder with timestamp suffix
+cp modules/slots/branch_id.yaml modules/slots/archive/branch_id_archived_20260114.yaml
+
+# 2. Remove from active location
+rm modules/slots/branch_id.yaml
+
+# 3. Update manifest counts
+# (Decrement slot count in manifest.json)
+
+# 4. Update slot_fixes.yaml
+# (Mark migration as processed: true)
+```
+
+## Anti-Patterns
+
+**WRONG** - Archived files at same level as active:
+```
+modules/slots/
+├── branch_id_archived_20260114.yaml   # NO - clutters active directory
+├── has_or_had_identifier.yaml
+└── ...
+```
+
+**CORRECT** - Archived files in subdirectory:
+```
+modules/slots/
+├── archive/
+│   └── branch_id_archived_20260114.yaml   # YES - clean separation
+├── has_or_had_identifier.yaml
+└── ...
+```
+
+## Validation
+
+Before committing migrations, verify:
+- [ ] No `*_archived_*.yaml` files at module root level
+- [ ] All archived files are in `archive/` subdirectory
+- [ ] Archive folder exists for each module type with archived files
+- [ ] Manifest counts updated to exclude archived files
+
+## See Also
+
+- Rule 53: Full Slot Migration (`full-slot-migration-rule.md`)
+- Rule 9: Enum-to-Class Promotion (`ENUM_TO_CLASS_PRINCIPLE.md`)
+- slot_fixes.yaml for migration tracking
--- a/.opencode/rules/podman-containerization-rule.md
+++ b/.opencode/rules/podman-containerization-rule.md
@ -0,0 +1,292 @@
+# Rule 54: RAG API Podman Containerization
+
+🚨 **CRITICAL**: The GLAM RAG API MUST be deployed via Podman container, NOT via venv/rsync. This solves Python import consistency issues between local development and production.
+
+---
+
+## Why Podman (Not venv)
+
+### The Problem
+
+Python import behavior differs between local development and gunicorn:
+
+| Context | Import Style | Works? |
+|---------|--------------|--------|
+| Local development (`uvicorn main:app`) | `from .provenance import` | ✅ |
+| Production (`gunicorn main:app`) | `from .provenance import` | ❌ |
+| Production (`gunicorn main:app`) | `from provenance import` | ✅ |
+
+When syncing code via rsync to a server venv, the import style that works locally may fail in production with gunicorn.
+
+### The Solution
+
+Containerization with Podman ensures:
+1. **Consistent import resolution** - Same Python environment locally and in production
+2. **Isolation** - RAG API dependencies don't conflict with other services
+3. **Reproducibility** - Dockerfile defines exact environment
+4. **Rootless security** - Podman runs as non-root user inside container
+
+---
+
+## Deployment Architecture
+
+```
+┌─────────────────────────────────────────────────────────────┐
+│  Server: 91.98.224.44 (bronhouder.nl)                       │
+├─────────────────────────────────────────────────────────────┤
+│                                                             │
+│  ┌─────────────────────────────────────────────────────┐   │
+│  │  Podman Container: glam-rag-api                     │   │
+│  │                                                     │   │
+│  │  - python:3.11-slim base                            │   │
+│  │  - gunicorn + uvicorn workers                       │   │
+│  │  - Port 8010 (host network mode)                    │   │
+│  │  - Non-root user (glam:1000)                        │   │
+│  │                                                     │   │
+│  │  Connects to (all on localhost):                    │   │
+│  │  - Qdrant :6333                                     │   │
+│  │  - Oxigraph SPARQL :7878                            │   │
+│  │  - TypeDB :1729                                     │   │
+│  │  - PostGIS :5432                                    │   │
+│  │  - Valkey :8090                                     │   │
+│  └─────────────────────────────────────────────────────┘   │
+│                                                             │
+│  ┌─────────────────────────────────────────────────────┐   │
+│  │  Caddy Reverse Proxy                                │   │
+│  │  https://bronhouder.nl/api/rag/* → :8010            │   │
+│  └─────────────────────────────────────────────────────┘   │
+│                                                             │
+└─────────────────────────────────────────────────────────────┘
+```
+
+---
+
+## Key Files
+
+| File | Purpose |
+|------|---------|
+| `backend/rag/Dockerfile` | Container image definition |
+| `backend/rag/requirements.txt` | Python dependencies (includes gunicorn) |
+| `backend/rag/main.py` | FastAPI application |
+| `infrastructure/deploy.sh` | Deployment script (`--rag` flag) |
+
+---
+
+## Deployment Commands
+
+### Deploy RAG API
+
+```bash
+# From project root - deploys via Podman
+./infrastructure/deploy.sh --rag
+```
+
+This will:
+1. Sync `backend/rag/` to `/opt/glam-backend/rag/` on server
+2. Build Podman image `glam-rag-api:latest`
+3. Create/update systemd service `glam-rag-api.service`
+4. Start the container
+
+### Manual Operations (on server)
+
+```bash
+# Check service status
+systemctl status glam-rag-api
+
+# View container logs
+podman logs glam-rag-api
+
+# Restart service
+systemctl restart glam-rag-api
+
+# Rebuild image manually
+cd /opt/glam-backend/rag
+podman build -t glam-rag-api:latest .
+
+# Clean up old images
+podman image prune -f
+```
+
+---
+
+## Systemd Service Configuration
+
+The service file is created by `deploy.sh` at `/etc/systemd/system/glam-rag-api.service`:
+
+```ini
+[Unit]
+Description=GLAM Heritage RAG API (Podman)
+After=network.target qdrant.service
+Wants=qdrant.service
+
+[Service]
+Type=simple
+Restart=always
+RestartSec=10
+EnvironmentFile=/var/lib/glam/.env
+
+ExecStart=/usr/bin/podman run --rm --name glam-rag-api \
+  --network host \
+  -e OPENAI_API_KEY \
+  -e ZAI_API_TOKEN \
+  -e QDRANT_HOST=localhost \
+  -e QDRANT_PORT=6333 \
+  -e QDRANT_COLLECTION=heritage_custodians_minilm \
+  -e EMBEDDING_MODEL=all-MiniLM-L6-v2 \
+  -e EMBEDDING_DIM=384 \
+  -e TYPEDB_HOST=localhost \
+  -e TYPEDB_PORT=1729 \
+  -e TYPEDB_DATABASE=glam \
+  -e SPARQL_ENDPOINT=http://localhost:7878/query \
+  -e VALKEY_CACHE_URL=http://localhost:8090 \
+  -e POSTGIS_HOST=localhost \
+  -e POSTGIS_PORT=5432 \
+  -e POSTGIS_DATABASE=glam \
+  -e LLM_PROVIDER=openai \
+  -e LLM_MODEL=gpt-4.1-mini \
+  -v glam-rag-optimized-models:/app/optimized_models:z \
+  glam-rag-api:latest
+
+ExecStop=/usr/bin/podman stop glam-rag-api
+
+[Install]
+WantedBy=multi-user.target
+```
+
+**Key Configuration**:
+- `--network host`: Container uses host networking (accesses localhost services directly)
+- `EnvironmentFile`: Loads API keys from `/var/lib/glam/.env`
+- `-v ...:/app/optimized_models:z`: Persistent volume for DSPy optimized models
+- `Restart=always`: Auto-restart on failure
+
+---
+
+## Dockerfile Structure
+
+The Dockerfile at `backend/rag/Dockerfile`:
+
+```dockerfile
+FROM python:3.11-slim
+
+# Non-root user for security
+RUN useradd -m -u 1000 -s /bin/bash glam
+
+# Install dependencies first (layer caching)
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy application code
+COPY --chown=glam:glam . .
+
+USER glam
+
+# Gunicorn with uvicorn workers for async
+CMD ["gunicorn", "main:app", \
+     "--bind", "0.0.0.0:8010", \
+     "--workers", "2", \
+     "--worker-class", "uvicorn.workers.UvicornWorker", \
+     "--timeout", "120"]
+```
+
+---
+
+## Import Style for Container Deployment
+
+**CRITICAL**: Use absolute imports in RAG API Python files:
+
+```python
+# CORRECT - Works in container with gunicorn
+from provenance import ProvenanceTracker, format_provenance_chain
+
+# WRONG - Fails with gunicorn
+from .provenance import ProvenanceTracker, format_provenance_chain
+```
+
+This is because gunicorn doesn't recognize the directory as a package, so relative imports fail.
+
+---
+
+## Health Check Verification
+
+```bash
+# Local test (from server)
+curl http://localhost:8010/health
+
+# External test
+curl https://bronhouder.nl/api/rag/health
+```
+
+Expected response:
+```json
+{
+  "status": "healthy",
+  "backends": {
+    "qdrant": {"status": "connected", "collections": {...}},
+    "sparql": {"status": "connected", "triples": 30421},
+    "typedb": {"status": "connected", "observations": 27741}
+  }
+}
+```
+
+---
+
+## Troubleshooting
+
+### Container Won't Start
+
+```bash
+# Check systemd logs
+journalctl -u glam-rag-api -n 50
+
+# Check container logs directly
+podman logs glam-rag-api
+```
+
+### Import Errors
+
+If you see `ModuleNotFoundError` or `ImportError`:
+1. Check imports use absolute style (not relative)
+2. Verify all dependencies in `requirements.txt`
+3. Rebuild image: `podman build -t glam-rag-api:latest .`
+
+### Backend Connection Issues
+
+Container uses `--network host`, so backends must be on localhost:
+- Qdrant: `localhost:6333`
+- TypeDB: `localhost:1729`
+- Oxigraph: `localhost:7878`
+
+Check backend services:
+```bash
+systemctl status qdrant typedb oxigraph
+```
+
+---
+
+## Migration from venv (Historical)
+
+The old venv-based deployment has been deprecated:
+
+| Old (Deprecated) | New (Current) |
+|------------------|---------------|
+| `/var/lib/glam/api/backend/rag/` | `/opt/glam-backend/rag/` |
+| `glam-rag-api.service` (venv) | `glam-rag-api.service` (Podman) |
+| Manual pip install | Dockerfile-based |
+| rsync + systemd restart | rsync + podman build + restart |
+
+The old service and venv can be removed:
+```bash
+# Already done - for reference only
+systemctl stop glam-rag-api-venv  # if exists
+systemctl disable glam-rag-api-venv
+rm /etc/systemd/system/glam-rag-api-venv.service
+rm -rf /var/lib/glam/api/backend/rag/venv
+```
+
+---
+
+## See Also
+
+- Rule 7: Deployment is LOCAL via SSH/rsync (NO CI/CD)
+- `backend/rag/README.md` - RAG API documentation
+- `infrastructure/deploy.sh` - Full deployment script
--- a/AGENTS.md
+++ b/AGENTS.md
@ -47,7 +47,7 @@ This is NOT a simple data extraction project. This is an **ontology engineering

 ---

-This section summarizes 53 critical rules. Each rule has complete documentation in `.opencode/` files.
+This section summarizes 54 critical rules. Each rule has complete documentation in `.opencode/` files.

 ### Rule 0: LinkML Schemas Are the Single Source of Truth

@ -1656,6 +1656,48 @@ classes:

 ---

+### Rule 54: RAG API Podman Containerization
+
+🚨 **CRITICAL**: The GLAM RAG API MUST be deployed via Podman container, NOT via venv/rsync. This solves Python import consistency issues between local development and production gunicorn.
+
+**Why Podman**:
+- **Import consistency**: gunicorn requires absolute imports (`from provenance import`) not relative (`from .provenance import`)
+- **Isolation**: RAG API dependencies don't conflict with other server services
+- **Reproducibility**: Dockerfile defines exact Python environment
+- **Security**: Container runs as non-root user
+
+**Deployment**:
+```bash
+# Deploy RAG API via Podman
+./infrastructure/deploy.sh --rag
+```
+
+**Key Files**:
+| File | Purpose |
+|------|---------|
+| `backend/rag/Dockerfile` | Container image definition |
+| `backend/rag/requirements.txt` | Python dependencies (includes gunicorn) |
+| `infrastructure/deploy.sh` | Deployment script (`--rag` flag) |
+
+**Server Configuration**:
+- Container image: `glam-rag-api:latest`
+- Systemd service: `glam-rag-api.service`
+- Network: Host mode (accesses localhost backends)
+- Health endpoint: `https://bronhouder.nl/api/rag/health`
+
+**Import Style** (for container deployment):
+```python
+# CORRECT - Works in container with gunicorn
+from provenance import ProvenanceTracker
+
+# WRONG - Fails with gunicorn
+from .provenance import ProvenanceTracker
+```
+
+**See**: `.opencode/rules/podman-containerization-rule.md` for complete documentation
+
+---
+
 ## Appendix: Full Rule Content (No .opencode Equivalent)

 The following rules have no separate .opencode file and are preserved in full:
--- a/data/entity_resolution/backups/entity_resolution_candidates_local_backup_20260114_100228.json
+++ b/data/entity_resolution/backups/entity_resolution_candidates_local_backup_20260114_100228.json
--- a/data/entity_resolution/entity_resolution_candidates.json
+++ b/data/entity_resolution/entity_resolution_candidates.json
--- a/frontend/public/schemas/20251121/linkml/manifest.json
+++ b/frontend/public/schemas/20251121/linkml/manifest.json
@ -1,12 +1,12 @@
 {
-  "generated": "2026-01-14T08:50:13.029Z",
+  "generated": "2026-01-14T10:31:53.486Z",
  "schemaRoot": "/schemas/20251121/linkml",
-  "totalFiles": 2913,
+  "totalFiles": 2896,
  "categoryCounts": {
    "main": 4,
    "class": 671,
    "enum": 147,
-    "slot": 2087,
+    "slot": 2070,
    "module": 4
  },
  "categories": [
@ -1945,6 +1945,11 @@
          "path": "modules/classes/NotarialArchiveRecordSetTypes.yaml",
          "category": "class"
        },
+        {
+          "name": "Notes",
+          "path": "modules/classes/Notes.yaml",
+          "category": "class"
+        },
        {
          "name": "OAIPMHEndpoint",
          "path": "modules/classes/OAIPMHEndpoint.yaml",
@ -2405,11 +2410,6 @@
          "path": "modules/classes/ReadingRoomAnnex.yaml",
          "category": "class"
        },
-        {
-          "name": "RealnessStatus",
-          "path": "modules/classes/RealnessStatus.yaml",
-          "category": "class"
-        },
        {
          "name": "ReconstructedEntity",
          "path": "modules/classes/ReconstructedEntity.yaml",
@ -4157,51 +4157,11 @@
          "path": "modules/slots/accepts_or_accepted_visiting_scholar.yaml",
          "category": "slot"
        },
-        {
-          "name": "activities_societies",
-          "path": "modules/slots/activities_societies.yaml",
-          "category": "slot"
-        },
-        {
-          "name": "actual_end",
-          "path": "modules/slots/actual_end.yaml",
-          "category": "slot"
-        },
-        {
-          "name": "actual_start",
-          "path": "modules/slots/actual_start.yaml",
-          "category": "slot"
-        },
-        {
-          "name": "address_formatted",
-          "path": "modules/slots/address_formatted.yaml",
-          "category": "slot"
-        },
-        {
-          "name": "address_type",
-          "path": "modules/slots/address_type.yaml",
-          "category": "slot"
-        },
-        {
-          "name": "admin_office_id",
-          "path": "modules/slots/admin_office_id.yaml",
-          "category": "slot"
-        },
-        {
-          "name": "administrative_functions",
-          "path": "modules/slots/administrative_functions.yaml",
-          "category": "slot"
-        },
        {
          "name": "affects_or_affected",
          "path": "modules/slots/affects_or_affected.yaml",
          "category": "slot"
        },
-        {
-          "name": "aggregates_from",
-          "path": "modules/slots/aggregates_from.yaml",
-          "category": "slot"
-        },
        {
          "name": "aggregates_or_aggregated_from",
          "path": "modules/slots/aggregates_or_aggregated_from.yaml",
@ -4247,11 +4207,6 @@
          "path": "modules/slots/appointment_required.yaml",
          "category": "slot"
        },
-        {
-          "name": "appraisal_notes",
-          "path": "modules/slots/appraisal_notes.yaml",
-          "category": "slot"
-        },
        {
          "name": "approved_by",
          "path": "modules/slots/approved_by.yaml",
@ -4377,16 +4332,6 @@
          "path": "modules/slots/binding_description.yaml",
          "category": "slot"
        },
-        {
-          "name": "binding_provenance",
-          "path": "modules/slots/binding_provenance.yaml",
-          "category": "slot"
-        },
-        {
-          "name": "binding_type",
-          "path": "modules/slots/binding_type.yaml",
-          "category": "slot"
-        },
        {
          "name": "bio_custodian_subtype",
          "path": "modules/slots/bio_custodian_subtype.yaml",
@ -4452,31 +4397,6 @@
          "path": "modules/slots/branch_head.yaml",
          "category": "slot"
        },
-        {
-          "name": "branch_id",
-          "path": "modules/slots/branch_id.yaml",
-          "category": "slot"
-        },
-        {
-          "name": "branch_name",
-          "path": "modules/slots/branch_name.yaml",
-          "category": "slot"
-        },
-        {
-          "name": "branch_office_description",
-          "path": "modules/slots/branch_office_description.yaml",
-          "category": "slot"
-        },
-        {
-          "name": "branch_office_id",
-          "path": "modules/slots/branch_office_id.yaml",
-          "category": "slot"
-        },
-        {
-          "name": "branch_office_name",
-          "path": "modules/slots/branch_office_name.yaml",
-          "category": "slot"
-        },
        {
          "name": "branch_service_area",
          "path": "modules/slots/branch_service_area.yaml",
@ -4487,11 +4407,6 @@
          "path": "modules/slots/branch_staff_count.yaml",
          "category": "slot"
        },
-        {
-          "name": "branch_type",
-          "path": "modules/slots/branch_type.yaml",
-          "category": "slot"
-        },
        {
          "name": "broader_concept",
          "path": "modules/slots/broader_concept.yaml",
@ -4532,11 +4447,6 @@
          "path": "modules/slots/budget_status.yaml",
          "category": "slot"
        },
-        {
-          "name": "budget_type",
-          "path": "modules/slots/budget_type.yaml",
-          "category": "slot"
-        },
        {
          "name": "building_floor_area_sqm",
          "path": "modules/slots/building_floor_area_sqm.yaml",
@ -4557,11 +4467,6 @@
          "path": "modules/slots/cached_token.yaml",
          "category": "slot"
        },
-        {
-          "name": "cadastral_id",
-          "path": "modules/slots/cadastral_id.yaml",
-          "category": "slot"
-        },
        {
          "name": "call_description",
          "path": "modules/slots/call_description.yaml",
@ -7482,21 +7387,11 @@
          "path": "modules/slots/has_activity_name.yaml",
          "category": "slot"
        },
-        {
-          "name": "has_actual_end_date",
-          "path": "modules/slots/has_actual_end_date.yaml",
-          "category": "slot"
-        },
        {
          "name": "has_actual_return_date",
          "path": "modules/slots/has_actual_return_date.yaml",
          "category": "slot"
        },
-        {
-          "name": "has_actual_start_date",
-          "path": "modules/slots/has_actual_start_date.yaml",
-          "category": "slot"
-        },
        {
          "name": "has_address",
          "path": "modules/slots/has_address.yaml",
@ -8682,6 +8577,11 @@
          "path": "modules/slots/has_or_had_note.yaml",
          "category": "slot"
        },
+        {
+          "name": "has_or_had_notes",
+          "path": "modules/slots/has_or_had_notes.yaml",
+          "category": "slot"
+        },
        {
          "name": "has_or_had_open_access_endpoint",
          "path": "modules/slots/has_or_had_open_access_endpoint.yaml",
@ -8767,6 +8667,11 @@
          "path": "modules/slots/has_or_had_project.yaml",
          "category": "slot"
        },
+        {
+          "name": "has_or_had_provenance",
+          "path": "modules/slots/has_or_had_provenance.yaml",
+          "category": "slot"
+        },
        {
          "name": "has_or_had_provenance_event",
          "path": "modules/slots/has_or_had_provenance_event.yaml",
@ -9712,11 +9617,6 @@
          "path": "modules/slots/is_or_was_platform_of.yaml",
          "category": "slot"
        },
-        {
-          "name": "is_or_was_real",
-          "path": "modules/slots/is_or_was_real.yaml",
-          "category": "slot"
-        },
        {
          "name": "is_or_was_related_to",
          "path": "modules/slots/is_or_was_related_to.yaml",
@ -10777,6 +10677,21 @@
          "path": "modules/slots/note.yaml",
          "category": "slot"
        },
+        {
+          "name": "note_content",
+          "path": "modules/slots/note_content.yaml",
+          "category": "slot"
+        },
+        {
+          "name": "note_date",
+          "path": "modules/slots/note_date.yaml",
+          "category": "slot"
+        },
+        {
+          "name": "note_type",
+          "path": "modules/slots/note_type.yaml",
+          "category": "slot"
+        },
        {
          "name": "oai_pmh_endpoint",
          "path": "modules/slots/oai_pmh_endpoint.yaml",
--- a/frontend/public/schemas/20251121/linkml/modules/classes/AuxiliaryPlace.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/classes/AuxiliaryPlace.yaml
@ -101,7 +101,7 @@ classes:
      \n  preferred_label: \"Rijksmuseum\"\n  place_designation:\n    place_name: \"Rijksmuseum\"  # Main building on Museumplein\n\
      \    auxiliary_places:\n      - place_name: \"Depot Amersfoort\"\n        auxiliary_place_type: STORAGE_FACILITY\n \
      \       street_address: \"Euterpelaan 25, Amersfoort\"\n      - place_name: \"Rijksmuseum Schiphol\"\n        auxiliary_place_type:\
-      \ BRANCH_OFFICE\n        street_address: \"Schiphol Airport, Lounge 2\"\n        hosts_branch:\n          branch_name:\
+      \ BRANCH_OFFICE\n        street_address: \"Schiphol Airport, Lounge 2\"\n        hosts_branch:\n          has_or_had_label:\
      \ \"Schiphol Exhibition Space\"\n```\n\n**TEMPORAL VALIDITY**:\n\nAuxiliary places can open/close independently:\n-\
      \ Storage facility opened 1995, closed 2010 (moved to new location)\n- Branch office valid_from 2000, valid_to null\
      \ (still active)\n\nTrack with valid_from/valid_to or temporal_extent (for fuzzy dates).\n"
@ -279,7 +279,7 @@ classes:
        inlined_as_list: true
        examples:
        - value:
-            branch_name: Conservation Division - Amersfoort
+            has_or_had_label: Conservation Division - Amersfoort
            branch_type: CONSERVATION_LAB
          description: Conservation branch at depot site
      is_auxiliary_of_place:
@ -358,7 +358,7 @@ classes:
        country: https://nde.nl/ontology/hc/country/NL
        valid_from: '2002-10-01'
        hosts_branch:
-        - branch_name: Schiphol Exhibition Team
+        - has_or_had_label: Schiphol Exhibition Team
          branch_type: EXHIBITION_SPACE
        is_auxiliary_of_place: https://nde.nl/ontology/hc/place/rijksmuseum-main
        refers_to_custodian: https://nde.nl/ontology/hc/nl-nh-ams-m-rm-q190804
--- a/frontend/public/schemas/20251121/linkml/modules/classes/BranchOffice.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/classes/BranchOffice.yaml
@ -6,9 +6,9 @@ imports:
 - ./ReconstructedEntity
 - ./CustodianObservation
 - ./ReconstructionActivity
- ../slots/branch_office_description
- ../slots/branch_office_id
- ../slots/branch_office_name
+- ../slots/has_or_had_description
+- ../slots/has_or_had_identifier
+- ../slots/has_or_had_label
 - ../slots/branch_service_area
 - ../slots/branch_staff_count
 - ../slots/has_local_collection
@ -50,8 +50,8 @@ classes:
      \ Zaanstreek-Waterland branch\n   - Serves researchers in Zaandam area\n   - Holds local municipal records\n\n2. **Library\
      \ Satellite Locations**:\n   - University library branch at satellite campus\n   - Public library neighborhood branches\n\
      \n3. **Museum Study Centers**:\n   - Off-site study/research center for scholars\n   - Rijksmuseum Schiphol (airport\
-      \ exhibition space)\n\n**Example - Regional Archive Branch**:\n```yaml\nBranchOffice:\n  branch_office_id: \"https://nde.nl/ontology/hc/aux/nha-zaanstreek-branch\"\
-      \n  branch_office_name: \"Noord-Hollands Archief - Zaanstreek-Waterland\"\n  branch_office_description: |\n    Regional\
+      \ exhibition space)\n\n**Example - Regional Archive Branch**:\n```yaml\nBranchOffice:\n  has_or_had_identifier: \"https://nde.nl/ontology/hc/aux/nha-zaanstreek-branch\"\
+      \n  has_or_had_label: \"Noord-Hollands Archief - Zaanstreek-Waterland\"\n  has_or_had_description: |\n    Regional\
      \ branch serving Zaanstreek-Waterland area.\n    Holds municipal records from Zaandam, Wormerland, Purmerend.\n    Open\
      \ to researchers Tuesday-Thursday.\n  branch_service_area: \"Zaanstreek-Waterland region\"\n  is_public_facing: true\n\
      \  services_offered:\n    - \"Archival research access\"\n    - \"Genealogical consultations\"\n    - \"Local history\
@ -66,9 +66,9 @@ classes:
    - org:OrganizationalUnit
    - schema:branch
    slots:
-    - branch_office_description
-    - branch_office_id
-    - branch_office_name
+    - has_or_had_description
+    - has_or_had_identifier
+    - has_or_had_label
    - branch_service_area
    - branch_staff_count
    - has_local_collection
@ -80,16 +80,24 @@ classes:
    - was_derived_from
    - was_generated_by
    slot_usage:
-      branch_office_id:
+      has_or_had_identifier:
        range: uriorcurie
        required: true
        identifier: true
+        description: >-
+          Unique identifier for this branch office.
+          MIGRATED from branch_office_id (2026-01-14) per Rule 53.
        examples:
        - value: https://nde.nl/ontology/hc/aux/nha-zaanstreek-branch
          description: Noord-Hollands Archief regional branch
-      branch_office_name:
+      has_or_had_label:
        range: string
        required: true
+        multivalued: false
+        description: >-
+          Name of this branch office.
+          MIGRATED from branch_office_name (2026-01-14) per Rule 53.
+          Typically includes parent organization name + branch location/function.
        examples:
        - value: Noord-Hollands Archief - Zaanstreek-Waterland
          description: Regional archive branch
@ -97,8 +105,12 @@ classes:
          description: Airport exhibition branch
        - value: Universiteitsbibliotheek Science Park
          description: University library satellite
-      branch_office_description:
+      has_or_had_description:
        range: string
+        description: >-
+          Description of this branch office, including services offered,
+          target audience, and distinguishing features.
+          MIGRATED from branch_office_description (2026-01-15) per Rule 53.
        examples:
        - value: Regional branch serving Zaanstreek-Waterland area. Holds municipal records from Zaandam, Wormerland, Purmerend.
            Open to researchers Tuesday-Thursday.
@ -161,9 +173,9 @@ classes:
    - https://schema.org/branch
    examples:
    - value:
-        branch_office_id: https://nde.nl/ontology/hc/aux/nha-zaanstreek-branch
-        branch_office_name: Noord-Hollands Archief - Zaanstreek-Waterland
-        branch_office_description: Regional branch serving Zaanstreek-Waterland area. Holds municipal records from Zaandam,
+        has_or_had_identifier: https://nde.nl/ontology/hc/aux/nha-zaanstreek-branch
+        has_or_had_label: Noord-Hollands Archief - Zaanstreek-Waterland
+        has_or_had_description: Regional branch serving Zaanstreek-Waterland area. Holds municipal records from Zaandam,
          Wormerland, Purmerend.
        branch_service_area: Zaanstreek-Waterland region
        is_public_facing: true
@ -176,9 +188,9 @@ classes:
        has_local_collection: true
      description: Regional archive branch
    - value:
-        branch_office_id: https://nde.nl/ontology/hc/aux/rijksmuseum-schiphol
-        branch_office_name: Rijksmuseum Schiphol
-        branch_office_description: Exhibition space at Schiphol Airport featuring rotating highlights from the Rijksmuseum
+        has_or_had_identifier: https://nde.nl/ontology/hc/aux/rijksmuseum-schiphol
+        has_or_had_label: Rijksmuseum Schiphol
+        has_or_had_description: Exhibition space at Schiphol Airport featuring rotating highlights from the Rijksmuseum
          collection. Free admission.
        branch_service_area: Amsterdam Schiphol Airport travelers
        is_public_facing: true
--- a/frontend/public/schemas/20251121/linkml/modules/classes/CustodianArchive.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/classes/CustodianArchive.yaml
@ -23,7 +23,8 @@ imports:
 - ../slots/has_accession_date
 - ../slots/has_accumulation_end_date
 - ../slots/has_accumulation_start_date
- ../slots/appraisal_notes
+- ../slots/has_or_had_notes
+- ./Notes
 - ../slots/has_archive_description
 - ../slots/has_archive_name
 - ../slots/arrangement_notes
@ -75,7 +76,7 @@ classes:
    - has_accession_number
    - has_accumulation_end_date
    - has_accumulation_start_date
-    - appraisal_notes
+    - has_or_had_notes
    - has_archive_description
    - has_archive_name
    - arrangement_notes
@ -258,12 +259,17 @@ classes:
        examples:
        - value: Closed - Contains personnel files with personal data
          description: Privacy restriction
-      has_appraisal_note:
-        range: string
+      has_or_had_notes:
+        range: Notes
+        multivalued: true
+        inlined: true
        required: false
        examples:
-        - value: Retained all policy files; destroyed duplicate copies and routine correspondence per retention schedule RS-2020-05
-          description: Appraisal decisions documented
+        - value: |
+            - note_type: appraisal
+              note_content: "Retained all policy files; destroyed duplicate copies and routine correspondence per retention schedule RS-2020-05"
+              note_date: "2024-03-15"
+          description: Appraisal decisions documented as typed note
      has_arrangement_note:
        range: string
        required: false
@ -344,6 +350,9 @@ classes:
        estimated_extent: 85 linear meters
        assigned_processor: Dr. Jan de Vries
        processing_started_date: '2024-01-10'
-        appraisal_notes: Retained all policy files; weeded duplicate copies per retention schedule.
+        has_or_had_notes:
+          - note_type: appraisal
+            note_content: "Retained all policy files; weeded duplicate copies per retention schedule."
+            note_date: "2024-01-10"
        refers_to_custodian: https://nde.nl/ontology/hc/nl-na
      description: Government records in active processing (9 years after accession)
--- a/frontend/public/schemas/20251121/linkml/modules/classes/GeoSpatialPlace.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/classes/GeoSpatialPlace.yaml
@ -17,7 +17,7 @@ imports:
 - ../slots/has_altitude
 - ../slots/has_accuracy_in_meters
 - ../slots/bounding_box
- ../slots/cadastral_id
+- ../slots/has_or_had_identifier
 - ../slots/coordinate_reference_system
 - ../slots/feature_class
 - ../slots/feature_code
@ -159,7 +159,7 @@ classes:
    - has_accuracy_in_meters
    - has_altitude
    - bounding_box
-    - cadastral_id
+    - has_or_had_identifier
    - coordinate_reference_system
    - feature_class
    - feature_code
@ -203,6 +203,17 @@ classes:
        examples:
        - value: 6930126
          description: Rijksmuseum GeoNames ID
+      has_or_had_identifier:
+        description: >-
+          Cadastral identifiers for this geospatial place.
+          MIGRATION NOTE (2026-01-14): Replaces cadastral_id per slot_fixes.yaml.
+          Use Identifier with identifier_scheme='cadastral' for parcel IDs.
+          Netherlands: Kadaster perceelnummer format {gemeente}-{sectie}-{perceelnummer}
+        examples:
+        - value:
+            identifier_scheme: cadastral
+            identifier_value: ASD04-H-4567
+          description: Amsterdam cadastral parcel identifier
    comments:
    - Follows TOOI BestuurlijkeRuimte pattern using GeoSPARQL
    - 'CRITICAL: NOT a nominal reference - this is measured/surveyed location data'
--- a/frontend/public/schemas/20251121/linkml/modules/classes/InformationCarrier.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/classes/InformationCarrier.yaml
@ -24,7 +24,7 @@ imports:
 - ../slots/has_archival_reference
 - ../slots/has_arrangement_level
 - ../slots/binding_description
- ../slots/binding_provenance
+- ../slots/has_or_had_provenance
 - ../slots/has_or_had_type
 - ../slots/bookplate
 - ./BindingType
@ -110,7 +110,7 @@ classes:
    - archival_reference
    - arrangement_level
    - binding_description
-    - binding_provenance
+    - has_or_had_provenance
    - has_or_had_type
    - bookplate
    - call_number
@ -338,11 +338,18 @@ classes:
        multivalued: true
        examples:
        - value: British Museum stamp on verso of title page
-      binding_provenance:
+      has_or_had_provenance:
        required: false
        range: string
+        description: >-
+          Provenance information related to the physical binding of this information carrier.
+          MIGRATED from binding_provenance (2026-01-15) per Rule 53.
+          
+          Describes the historical ownership or commissioning context of the binding,
+          such as royal presentation bindings or notable previous owners' bindings.
        examples:
        - value: Bound for presentation to Elizabeth I, royal arms in gold
+          description: Royal presentation binding provenance
      isbn:
        required: false
        range: string
--- a/frontend/public/schemas/20251121/linkml/modules/classes/LinkedInProfile.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/classes/LinkedInProfile.yaml
@ -18,8 +18,8 @@ imports:
 - ./HeritageRelevance
 - ./LanguageProficiency
 - ../slots/has_or_had_about_text
- ../slots/is_or_was_real
- ./RealnessStatus
+- ../slots/has_or_had_provenance
+- ./ProvenanceBlock
 - ../slots/has_assessment_date
 - ../slots/connections_text
 - ../slots/data_source_whatsapp
@ -332,7 +332,7 @@ classes:

      '
    slots:
-    - is_or_was_real
+    - has_or_had_provenance
    - data_source_whatsapp
    - enriched_date
    - enrichment_method_whatsapp
@ -352,14 +352,16 @@ classes:
        - value: public_linkedin_profile
      no_fabrication:
        range: boolean
-      is_or_was_real:
-        range: RealnessStatus
+      has_or_had_provenance:
+        range: ProvenanceBlock
        inlined: true
        description: >-
-          Realness status of the enrichment data.
-          Indicates whether the enrichment data is real production data or test/synthetic.
+          Provenance information for the enrichment data.
+          Contains data source, extraction method, confidence score, and verification status.
        examples:
        - value:
-            status: REAL
-            description: "Verified production data from LinkedIn profile"
-          description: Real production enrichment data
+            data_source: "public_linkedin_profile"
+            extraction_date: "2025-01-14T12:00:00Z"
+            confidence_score: 0.95
+            note: "Verified production data from LinkedIn profile"
+          description: Real production enrichment data with provenance
--- a/frontend/public/schemas/20251121/linkml/modules/classes/Notes.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/classes/Notes.yaml
@ -0,0 +1,122 @@
+# Notes class
+# Generic class for typed notes with provenance
+#
+# Generation date: 2026-01-14
+# Rule compliance: 0 (LinkML single source of truth), 38 (slot centralization)
+# Migration: Supports has_or_had_notes slot (replaces appraisal_notes)
+
+id: https://nde.nl/ontology/hc/class/Notes
+name: notes_class
+title: Notes Class
+
+prefixes:
+  linkml: https://w3id.org/linkml/
+  hc: https://nde.nl/ontology/hc/
+  skos: http://www.w3.org/2004/02/skos/core#
+  rdfs: http://www.w3.org/2000/01/rdf-schema#
+  schema: http://schema.org/
+  dcterms: http://purl.org/dc/terms/
+
+default_prefix: hc
+
+imports:
+  - linkml:types
+  - ../metadata
+  - ../slots/note_type
+  - ../slots/note_content
+  - ../slots/note_date
+  - ../slots/language
+  - ../slots/specificity_annotation
+  - ../slots/template_specificity
+  - ./SpecificityAnnotation
+  - ./TemplateSpecificityScores
+
+classes:
+  Notes:
+    class_uri: skos:note
+    description: |
+      A typed note with optional provenance metadata.
+      
+      **Purpose**:
+      Notes provides a reusable class for representing documentation notes
+      across the heritage custodian schema. Supports typed notes (appraisal,
+      arrangement, conservation, etc.) with language tagging and dates.
+      
+      **Ontological Alignment**:
+      - **Primary**: `skos:note` - general note
+      - **Close**: `rdfs:comment` - comment on resource
+      
+      **Use Cases**:
+      - Appraisal notes documenting retention decisions
+      - Arrangement notes documenting physical organization
+      - Conservation notes documenting treatments
+      - Processing notes documenting archival workflow
+      - General documentation notes
+      
+      **Replaces**:
+      - `appraisal_notes` (string) - now typed with note_type
+      
+    exact_mappings:
+      - skos:note
+    
+    close_mappings:
+      - rdfs:comment
+      - dcterms:description
+    
+    slots:
+      - note_type
+      - note_content
+      - note_date
+      - language
+      - specificity_annotation
+      - template_specificity
+    
+    slot_usage:
+      note_type:
+        description: |
+          The type of note (appraisal, arrangement, conservation, processing, general).
+        range: string
+        required: false
+        examples:
+          - value: appraisal
+            description: Appraisal decision documentation
+          - value: arrangement
+            description: Physical organization notes
+          - value: conservation
+            description: Treatment documentation
+      note_content:
+        description: The textual content of the note.
+        range: string
+        required: true
+      note_date:
+        description: Date the note was created or last updated.
+        range: date
+        required: false
+      language:
+        description: |
+          ISO 639-1 two-letter language code for this note.
+          Examples: "en", "nl", "de", "fr"
+        range: string
+        required: false
+        pattern: "^[a-z]{2}$"
+    
+    annotations:
+      custodian_types: '["*"]'
+      custodian_types_rationale: Generic notes class applicable to all types.
+      custodian_types_primary: null
+      specificity_score: 0.3
+      specificity_rationale: Broadly applicable generic class for documentation notes.
+    
+    examples:
+      - value: |
+          note_type: appraisal
+          note_content: "Retained all policy files; destroyed duplicate copies and routine correspondence per retention schedule RS-2020-05"
+          note_date: "2024-03-15"
+          language: en
+        description: "Appraisal note documenting retention decisions"
+      - value: |
+          note_type: arrangement
+          note_content: "Maintained original order by correspondent. Created 5 series by function. Rehoused into acid-free folders and boxes."
+          note_date: "2024-06-01"
+          language: en
+        description: "Arrangement note documenting physical organization"
--- a/frontend/public/schemas/20251121/linkml/modules/classes/OrganizationBranch.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/classes/OrganizationBranch.yaml
@ -14,8 +14,8 @@ imports:
 - ../slots/located_at
 - ../slots/branch_description
 - ../slots/branch_head
- ../slots/branch_id
- ../slots/branch_name
+- ../slots/has_or_had_identifier
+- ../slots/has_or_had_label
 - ../slots/has_or_had_type
 - ../slots/contact_point
 - ../slots/has_operational_unit
@ -68,8 +68,8 @@ classes:
      \ Satellite Galleries**:\n   - Main museum → Contemporary Art Wing (off-site)\n   - Separate building, curated exhibitions\n\
      \   \n4. **Conservation/Research Centers**:\n   - Main institution → Conservation Lab (different building)\n   - Specialized\
      \ facility with own staff\n\n**Example - National Archives Branch**:\n```yaml\nAuxiliaryPlace:\n  place_name: \"Regionaal\
-      \ Historisch Centrum Noord-Holland\"\n  auxiliary_place_type: BRANCH_OFFICE\n  hosts_branch:\n    - branch_id: \"https://nde.nl/ontology/hc/branch/na-rhc-noord-holland\"\
-      \n      branch_name: \"RHC Noord-Holland\"\n      branch_type: REGIONAL_OFFICE\n      has_operational_unit:\n      \
+      \ Historisch Centrum Noord-Holland\"\n  auxiliary_place_type: BRANCH_OFFICE\n  hosts_branch:\n    - has_or_had_identifier: \"https://nde.nl/ontology/hc/branch/na-rhc-noord-holland\"\
+      \n      has_or_had_label: \"RHC Noord-Holland\"\n      branch_type: REGIONAL_OFFICE\n      has_operational_unit:\n      \
      \  - unit_name: \"Reading Room Services\"\n        - unit_name: \"Digitization Team\"\n      is_branch_of: \"https://nde.nl/ontology/hc/nl-na\"\
      \n```\n\n**DISTINCTION FROM schema:branchOf**:\n\nSchema.org `branchOf` links commercial branches (e.g., bank branches).\n\
      `org:unitOf` is more appropriate for heritage institutions as it:\n- Models public sector organizational hierarchies\n\
@ -86,8 +86,8 @@ classes:
    slots:
    - branch_description
    - branch_head
-    - branch_id
-    - branch_name
+    - has_or_had_identifier
+    - has_or_had_label
    - has_or_had_type
    - contact_point
    - has_operational_unit
@ -104,16 +104,24 @@ classes:
    - was_derived_from
    - was_generated_by
    slot_usage:
-      branch_id:
+      has_or_had_identifier:
        range: uriorcurie
        required: true
        identifier: true
+        description: >-
+          Unique identifier for this organizational branch.
+          MIGRATED from branch_id (2026-01-14) per Rule 53.
        examples:
        - value: https://nde.nl/ontology/hc/branch/rm-schiphol-exhibition
          description: Rijksmuseum Schiphol exhibition branch
-      branch_name:
+      has_or_had_label:
        range: string
        required: true
+        multivalued: false
+        description: >-
+          Official name of this organizational branch.
+          MIGRATED from branch_name (2026-01-15) per Rule 53.
+          This is the formal name of the branch as used in official documents.
        examples:
        - value: Rijksmuseum Schiphol
          description: Airport branch name
@ -179,7 +187,7 @@ classes:
        inlined_as_list: true
        examples:
        - value:
-            branch_name: Schiphol Terminal 2 Kiosk
+            has_or_had_label: Schiphol Terminal 2 Kiosk
          description: Sub-branch of Schiphol exhibition
      branch_head:
        range: string
@ -241,8 +249,8 @@ classes:
    - https://www.w3.org/TR/vcard-rdf/
    examples:
    - value:
-        branch_id: https://nde.nl/ontology/hc/branch/rm-schiphol
-        branch_name: Rijksmuseum Schiphol
+        has_or_had_identifier: https://nde.nl/ontology/hc/branch/rm-schiphol
+        has_or_had_label: Rijksmuseum Schiphol
        branch_type: EXHIBITION_SPACE
        branch_description: Small exhibition space at Schiphol Airport featuring rotating highlights from the collection.
        located_at:
@ -258,8 +266,8 @@ classes:
        refers_to_custodian: https://nde.nl/ontology/hc/nl-nh-ams-m-rm-q190804
      description: Rijksmuseum Schiphol exhibition branch
    - value:
-        branch_id: https://nde.nl/ontology/hc/branch/rm-depot-operations
-        branch_name: Collection Storage Operations - Amersfoort
+        has_or_had_identifier: https://nde.nl/ontology/hc/branch/rm-depot-operations
+        has_or_had_label: Collection Storage Operations - Amersfoort
        branch_type: STORAGE_MANAGEMENT
        branch_description: Off-site collection storage facility managing overflow objects and art storage.
        located_at:
@ -275,8 +283,8 @@ classes:
        refers_to_custodian: https://nde.nl/ontology/hc/nl-nh-ams-m-rm-q190804
      description: Rijksmuseum off-site storage operations branch
    - value:
-        branch_id: https://nde.nl/ontology/hc/branch/na-rhc-nh
-        branch_name: Regionaal Historisch Centrum Noord-Holland
+        has_or_had_identifier: https://nde.nl/ontology/hc/branch/na-rhc-nh
+        has_or_had_label: Regionaal Historisch Centrum Noord-Holland
        branch_type: REGIONAL_OFFICE
        branch_description: Regional archives center serving Noord-Holland province, providing reading room services and archival
          research support.
--- a/frontend/public/schemas/20251121/linkml/modules/classes/archive/RealnessStatus_archived_20260114.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/classes/archive/RealnessStatus_archived_20260114.yaml
--- a/frontend/public/schemas/20251121/linkml/modules/slots/archive/activities_societies_archived_20260114.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/archive/activities_societies_archived_20260114.yaml
--- a/frontend/public/schemas/20251121/linkml/modules/slots/archive/actual_end_archived_20260114.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/archive/actual_end_archived_20260114.yaml
--- a/frontend/public/schemas/20251121/linkml/modules/slots/archive/actual_start_archived_20260114.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/archive/actual_start_archived_20260114.yaml
--- a/frontend/public/schemas/20251121/linkml/modules/slots/archive/address_formatted_archived_20260114.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/archive/address_formatted_archived_20260114.yaml
--- a/frontend/public/schemas/20251121/linkml/modules/slots/archive/address_type_archived_20260114.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/archive/address_type_archived_20260114.yaml
--- a/frontend/public/schemas/20251121/linkml/modules/slots/archive/admin_office_id_archived_20260114.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/archive/admin_office_id_archived_20260114.yaml
--- a/frontend/public/schemas/20251121/linkml/modules/slots/archive/administrative_functions_archived_20260114.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/archive/administrative_functions_archived_20260114.yaml
--- a/frontend/public/schemas/20251121/linkml/modules/slots/archive/aggregates_from_archived_20260114.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/archive/aggregates_from_archived_20260114.yaml
--- a/frontend/public/schemas/20251121/linkml/modules/slots/archive/appraisal_notes_archived_20260114.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/archive/appraisal_notes_archived_20260114.yaml
--- a/frontend/public/schemas/20251121/linkml/modules/slots/archive/binding_provenance_archived_20260115.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/archive/binding_provenance_archived_20260115.yaml
--- a/frontend/public/schemas/20251121/linkml/modules/slots/archive/binding_type_archived_20260114.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/archive/binding_type_archived_20260114.yaml
--- a/frontend/public/schemas/20251121/linkml/modules/slots/archive/branch_id_archived_20260114.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/archive/branch_id_archived_20260114.yaml
--- a/frontend/public/schemas/20251121/linkml/modules/slots/archive/branch_name_archived_20260115.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/archive/branch_name_archived_20260115.yaml
--- a/frontend/public/schemas/20251121/linkml/modules/slots/archive/branch_office_description_archived_20260115.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/archive/branch_office_description_archived_20260115.yaml
--- a/frontend/public/schemas/20251121/linkml/modules/slots/archive/branch_office_id_archived_20260114.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/archive/branch_office_id_archived_20260114.yaml
--- a/frontend/public/schemas/20251121/linkml/modules/slots/archive/branch_office_name_archived_20260114.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/archive/branch_office_name_archived_20260114.yaml
--- a/frontend/public/schemas/20251121/linkml/modules/slots/archive/branch_type_archived_20260114.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/archive/branch_type_archived_20260114.yaml
--- a/frontend/public/schemas/20251121/linkml/modules/slots/archive/budget_type_archived_20260114.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/archive/budget_type_archived_20260114.yaml
--- a/frontend/public/schemas/20251121/linkml/modules/slots/archive/cadastral_id_archived_20260114.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/archive/cadastral_id_archived_20260114.yaml
--- a/frontend/public/schemas/20251121/linkml/modules/slots/archive/has_actual_end_date_archived_20260114.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/archive/has_actual_end_date_archived_20260114.yaml
--- a/frontend/public/schemas/20251121/linkml/modules/slots/archive/has_actual_start_date_archived_20260114.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/archive/has_actual_start_date_archived_20260114.yaml
--- a/frontend/public/schemas/20251121/linkml/modules/slots/archive/is_or_was_real_archived_20260114.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/archive/is_or_was_real_archived_20260114.yaml
--- a/frontend/public/schemas/20251121/linkml/modules/slots/has_or_had_notes.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/has_or_had_notes.yaml
@ -0,0 +1,70 @@
+# has_or_had_notes - Generic temporal notes slot
+#
+# Following RiC-O style naming convention (Rule 39):
+# - has_or_had_* indicates temporal relationship
+#
+# Generation date: 2026-01-14
+# Rule compliance: 38 (slot centralization), 39 (RiC-O naming), 43 (singular nouns - but spec requires plural)
+# Migration: Replaces appraisal_notes (per slot_fixes.yaml)
+#
+# NOTE: This slot uses plural "notes" as specified in slot_fixes.yaml,
+# though Rule 43 typically requires singular nouns. The spec is authoritative.
+
+id: https://nde.nl/ontology/hc/slot/has_or_had_notes
+name: has_or_had_notes_slot
+title: Has Or Had Notes Slot
+
+prefixes:
+  linkml: https://w3id.org/linkml/
+  hc: https://nde.nl/ontology/hc/
+  skos: http://www.w3.org/2004/02/skos/core#
+  rdfs: http://www.w3.org/2000/01/rdf-schema#
+
+imports:
+  - linkml:types
+  - ../classes/Notes
+
+default_prefix: hc
+
+slots:
+  has_or_had_notes:
+    slot_uri: skos:note
+    range: Notes
+    multivalued: true
+    inlined: true
+    inlined_as_list: true
+    description: |
+      Typed notes associated with an entity.
+      
+      **Replaces**: `appraisal_notes` (string-valued)
+      
+      **Purpose**:
+      Generic slot for attaching typed notes (appraisal, arrangement,
+      conservation, processing) with optional language and date metadata.
+      
+      **ONTOLOGY ALIGNMENT**:
+      
+      | Ontology | Property | Notes |
+      |----------|----------|-------|
+      | **SKOS** | `skos:note` | Primary - general note |
+      | **RDFS** | `rdfs:comment` | Related - comment |
+      
+      **RiC-O Context**:
+      Archival notes follow RiC-O patterns for documenting processing
+      activities and decisions (appraisal, arrangement, description).
+      
+    exact_mappings:
+      - skos:note
+    close_mappings:
+      - rdfs:comment
+    examples:
+      - value: |
+          - note_type: appraisal
+            note_content: "Retained all policy files; destroyed duplicate copies per retention schedule RS-2020-05"
+            note_date: "2024-03-15"
+        description: Appraisal note documenting retention decisions
+      - value: |
+          - note_type: arrangement
+            note_content: "Maintained original order by correspondent. Created 5 series by function."
+            note_date: "2024-06-01"
+        description: Arrangement note documenting physical organization
--- a/frontend/public/schemas/20251121/linkml/modules/slots/has_or_had_provenance.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/has_or_had_provenance.yaml
@ -0,0 +1,86 @@
+id: https://nde.nl/ontology/hc/slot/has_or_had_provenance
+name: has_or_had_provenance_slot
+title: Has Or Had Provenance Slot
+description: >-
+  Generic slot for attaching provenance information to any data element.
+  
+  **MIGRATION NOTE** (2026-01-14):
+  Created as replacement for `all_data_real`, `is_or_was_real`, and `has_all_data_real_flag` slots.
+  Uses `ProvenanceBlock` class for comprehensive provenance tracking including data realness,
+  extraction metadata, confidence scores, and verification status.
+  See slot_fixes.yaml for migration specification.
+
+prefixes:
+  linkml: https://w3id.org/linkml/
+  hc: https://nde.nl/ontology/hc/
+  prov: http://www.w3.org/ns/prov#
+  dct: http://purl.org/dc/terms/
+
+imports:
+  - linkml:types
+
+default_prefix: hc
+
+slots:
+  has_or_had_provenance:
+    description: >-
+      Provenance information for this data element.
+      
+      Links to a ProvenanceBlock that contains comprehensive provenance tracking
+      including data sources, extraction methods, confidence scores, timestamps,
+      and verification status.
+      
+      **TEMPORAL SEMANTICS** (RiC-O style):
+      The "has_or_had" naming follows RiC-O convention indicating that provenance
+      associations can change over time:
+      - Additional provenance may be added as data is enriched
+      - Provenance may be updated when verification occurs
+      - Historical provenance preserved through versioning
+      
+      **REPLACES**:
+      - `all_data_real` (auto-generated stub, string range)
+      - `is_or_was_real` (RealnessStatus typed class)
+      - `has_all_data_real_flag` (boolean flag, no provenance)
+      
+      **EXAMPLE**:
+      ```yaml
+      has_or_had_provenance:
+        data_source: "public_linkedin_profile"
+        extraction_date: "2025-01-14T12:00:00Z"
+        confidence_score: 0.95
+        note: "Verified production data"
+      ```
+    
+    range: ProvenanceBlock
+    slot_uri: prov:wasGeneratedBy
+    inlined: true
+    
+    exact_mappings:
+      - prov:wasGeneratedBy
+    
+    close_mappings:
+      - dct:provenance
+      - prov:hadPrimarySource
+    
+    annotations:
+      custodian_types: '["*"]'
+      custodian_types_rationale: >-
+        Provenance metadata applicable to all custodian types.
+      custodian_types_primary: "*"
+      specificity_score: 0.2
+      specificity_rationale: >-
+        Very low specificity - universal metadata applicable everywhere.
+      template_specificity:
+        general_heritage: 0.2
+        archive_search: 0.2
+        museum_search: 0.2
+        library_search: 0.2
+    
+    comments:
+      - Created from slot_fixes.yaml migration (2026-01-14)
+      - Replaces all_data_real, is_or_was_real, and has_all_data_real_flag slots
+      - Uses ProvenanceBlock class for comprehensive provenance tracking
+    
+    see_also:
+      - http://www.w3.org/ns/prov#wasGeneratedBy
+      - https://nde.nl/ontology/hc/class/ProvenanceBlock
--- a/frontend/public/schemas/20251121/linkml/modules/slots/manifest.json
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/manifest.json
@ -3,16 +3,9 @@
        "accepts_or_accepted_external_work.yaml",
        "accepts_or_accepted_payment_method.yaml",
        "accepts_or_accepted_visiting_scholar.yaml",
-        "activities_societies.yaml",
        "activity_id.yaml",
-        "actual_end.yaml",
-        "actual_start.yaml",
-        "address_formatted.yaml",
-        "address_type.yaml",
-        "admin_office_id.yaml",
-        "administrative_functions.yaml",
+
        "affects_or_affected.yaml",
-        "aggregates_from.yaml",
        "aggregates_or_aggregated_from.yaml",
        "is_or_was_real.yaml",
        "allocates_or_allocated.yaml",
@ -23,7 +16,6 @@
        "applicable_countries.yaml",
        "applies_to_call.yaml",
        "appointment_required.yaml",
-        "appraisal_notes.yaml",
        "approved_by.yaml",
        "approximate.yaml",
        "archive_branches.yaml",
@ -53,7 +45,6 @@
        "binding.yaml",
        "binding_description.yaml",
        "binding_provenance.yaml",
-        "binding_type.yaml",
        "bio_custodian_subtype.yaml",
        "bio_type_classification.yaml",
        "birth_date.yaml",
@ -74,7 +65,6 @@
        "branch_office_name.yaml",
        "branch_service_area.yaml",
        "branch_staff_count.yaml",
-        "branch_type.yaml",
        "broader_concept.yaml",
        "broader_concept_label.yaml",
        "broader_type.yaml",
@ -83,7 +73,6 @@
        "budget_description.yaml",
        "budget_name.yaml",
        "budget_status.yaml",
-        "budget_type.yaml",
        "building_floor_area_sqm.yaml",
        "business_criticality.yaml",
        "business_model.yaml",
@ -677,9 +666,7 @@
        "has_activity_name.yaml",
        "has_activity_timespan.yaml",
        "has_activity_type.yaml",
-        "has_actual_end_date.yaml",
        "has_actual_return_date.yaml",
-        "has_actual_start_date.yaml",
        "has_address.yaml",
        "has_admin_office_description.yaml",
        "has_admin_office_identifier.yaml",
@ -911,6 +898,7 @@
        "has_or_had_member.yaml",
        "has_or_had_member_custodian.yaml",
        "has_or_had_music_segment.yaml",
+        "has_or_had_notes.yaml",
        "has_or_had_open_access_endpoint.yaml",
        "has_or_had_operate.yaml",
        "has_or_had_operates_platform_type.yaml",
@ -1324,6 +1312,9 @@
        "notary_name.yaml",
        "notary_office.yaml",
        "note.yaml",
+        "note_content.yaml",
+        "note_date.yaml",
+        "note_type.yaml",
        "oai_pmh_endpoint.yaml",
        "object_alternate_name.yaml",
        "object_bbox.yaml",
--- a/frontend/public/schemas/20251121/linkml/modules/slots/note_content.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/note_content.yaml
@ -0,0 +1,44 @@
+# note_content - Textual content of a note
+#
+# Generation date: 2026-01-14
+# Rule compliance: 38 (slot centralization)
+# Migration: Supports Notes class (replaces appraisal_notes)
+
+id: https://nde.nl/ontology/hc/slot/note_content
+name: note_content_slot
+title: Note Content Slot
+
+prefixes:
+  linkml: https://w3id.org/linkml/
+  hc: https://nde.nl/ontology/hc/
+  skos: http://www.w3.org/2004/02/skos/core#
+  rdf: http://www.w3.org/1999/02/22-rdf-syntax-ns#
+
+imports:
+  - linkml:types
+
+default_prefix: hc
+
+slots:
+  note_content:
+    slot_uri: rdf:value
+    range: string
+    description: |
+      The textual content of a note.
+      
+      **ONTOLOGY ALIGNMENT**:
+      
+      | Ontology | Property | Notes |
+      |----------|----------|-------|
+      | **RDF** | `rdf:value` | Primary - literal value |
+      | **SKOS** | `skos:note` | Related - note text |
+      
+    exact_mappings:
+      - rdf:value
+    close_mappings:
+      - skos:note
+    examples:
+      - value: "Retained all policy files; destroyed duplicate copies per retention schedule."
+        description: Appraisal note content
+      - value: "Maintained original order by correspondent. Created 5 series by function."
+        description: Arrangement note content
--- a/frontend/public/schemas/20251121/linkml/modules/slots/note_date.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/note_date.yaml
@ -0,0 +1,44 @@
+# note_date - Date a note was created or updated
+#
+# Generation date: 2026-01-14
+# Rule compliance: 38 (slot centralization)
+# Migration: Supports Notes class (replaces appraisal_notes)
+
+id: https://nde.nl/ontology/hc/slot/note_date
+name: note_date_slot
+title: Note Date Slot
+
+prefixes:
+  linkml: https://w3id.org/linkml/
+  hc: https://nde.nl/ontology/hc/
+  dcterms: http://purl.org/dc/terms/
+  schema: http://schema.org/
+
+imports:
+  - linkml:types
+
+default_prefix: hc
+
+slots:
+  note_date:
+    slot_uri: dcterms:date
+    range: date
+    description: |
+      The date when the note was created or last updated.
+      
+      **ONTOLOGY ALIGNMENT**:
+      
+      | Ontology | Property | Notes |
+      |----------|----------|-------|
+      | **DCTerms** | `dcterms:date` | Primary - date |
+      | **Schema.org** | `schema:dateCreated` | Related - creation date |
+      
+    exact_mappings:
+      - dcterms:date
+    close_mappings:
+      - schema:dateCreated
+    examples:
+      - value: "2024-03-15"
+        description: Note created March 15, 2024
+      - value: "2024-06-01"
+        description: Note updated June 1, 2024
--- a/frontend/public/schemas/20251121/linkml/modules/slots/note_type.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/note_type.yaml
@ -0,0 +1,51 @@
+# note_type - Type classification for notes
+#
+# Generation date: 2026-01-14
+# Rule compliance: 38 (slot centralization)
+# Migration: Supports Notes class (replaces appraisal_notes)
+
+id: https://nde.nl/ontology/hc/slot/note_type
+name: note_type_slot
+title: Note Type Slot
+
+prefixes:
+  linkml: https://w3id.org/linkml/
+  hc: https://nde.nl/ontology/hc/
+  skos: http://www.w3.org/2004/02/skos/core#
+  dcterms: http://purl.org/dc/terms/
+
+imports:
+  - linkml:types
+
+default_prefix: hc
+
+slots:
+  note_type:
+    slot_uri: dcterms:type
+    range: string
+    description: |
+      The type or category of the note.
+      
+      **Common Types**:
+      - appraisal: Retention/destruction decisions
+      - arrangement: Physical organization notes
+      - conservation: Treatment documentation
+      - processing: Archival workflow notes
+      - general: General documentation
+      
+      **ONTOLOGY ALIGNMENT**:
+      
+      | Ontology | Property | Notes |
+      |----------|----------|-------|
+      | **DCTerms** | `dcterms:type` | Primary - nature/genre |
+      | **SKOS** | `skos:inScheme` | Related - controlled vocab |
+      
+    exact_mappings:
+      - dcterms:type
+    examples:
+      - value: "appraisal"
+        description: Appraisal decision documentation
+      - value: "arrangement"
+        description: Physical organization notes
+      - value: "conservation"
+        description: Treatment documentation
--- a/frontend/public/schemas/20251121/linkml/modules/slots/slot_fixes.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/slot_fixes.yaml
@ -30,24 +30,34 @@ fixes:
        status: true
        timestamp: '2026-01-14T16:00:00Z'
        session: "session-2026-01-14-type-migration"
-        notes: "FULLY MIGRATED: TemporaryLocation - actual_end REMOVED, using temporal_extent with TimeSpan.end_of_the_end (Rule 53)"
+        notes: "FULLY MIGRATED: TemporaryLocation - actual_end REMOVED. Use temporal_extent (range: TimeSpan) which contains end_of_the_end. CIDOC-CRM pattern: P4_has_time-span → E52_Time-Span → P82b_end_of_the_end"
      revision:
-        - label: end_of_the_end
+        - label: temporal_extent
          type: slot
+          description: "Slot with range TimeSpan (crm:P4_has_time-span)"
        - label: TimeSpan
          type: class
+          description: "Class containing begin_of_the_begin, end_of_the_begin, begin_of_the_end, end_of_the_end slots"
+        - label: end_of_the_end
+          type: slot
+          description: "Nested within TimeSpan - latest possible end time (crm:P82b_end_of_the_end)"

    - original_slot_id: https://nde.nl/ontology/hc/slot/actual_start
      processed:
        status: true
        timestamp: '2026-01-14T16:00:00Z'
        session: "session-2026-01-14-type-migration"
-        notes: "FULLY MIGRATED: TemporaryLocation - actual_start REMOVED, using temporal_extent with TimeSpan.begin_of_the_begin (Rule 53)"
+        notes: "FULLY MIGRATED: TemporaryLocation - actual_start REMOVED. Use temporal_extent (range: TimeSpan) which contains begin_of_the_begin. CIDOC-CRM pattern: P4_has_time-span → E52_Time-Span → P82a_begin_of_the_begin"
      revision:
-        - label: begin_of_the_begin
+        - label: temporal_extent
          type: slot
+          description: "Slot with range TimeSpan (crm:P4_has_time-span)"
        - label: TimeSpan
          type: class
+          description: "Class containing begin_of_the_begin, end_of_the_begin, begin_of_the_end, end_of_the_end slots"
+        - label: begin_of_the_begin
+          type: slot
+          description: "Nested within TimeSpan - earliest possible start time (crm:P82a_begin_of_the_begin)"

    - original_slot_id: https://nde.nl/ontology/hc/slot/address_formatted
      processed:
@ -171,16 +181,17 @@ fixes:
    - original_slot_id: https://nde.nl/ontology/hc/slot/all_data_real
      processed:
        status: true
-        timestamp: '2026-01-14T22:30:00Z'
-        session: "session-2026-01-14-realness-migration"
+        timestamp: '2026-01-14T23:30:00Z'
+        session: "session-2026-01-14-provenance-migration"
        notes: >-
-          FULLY MIGRATED: all_data_real and has_all_data_real_flag REMOVED and archived.
-          Created is_or_was_real slot and RealnessStatus class per slot_fixes.yaml revision.
-          LinkedInProfile.yaml updated - WhatsAppEnrichmentMetadata now uses is_or_was_real.
+          FULLY MIGRATED: all_data_real, is_or_was_real, and has_all_data_real_flag REMOVED and archived.
+          Created has_or_had_provenance slot pointing to existing ProvenanceBlock class.
+          LinkedInProfile.yaml updated - WhatsAppEnrichmentMetadata now uses has_or_had_provenance.
+          Archived: is_or_was_real.yaml (slot), RealnessStatus.yaml (class) to archive/ folders.
      revision:
-        - label: is_or_was_real
+        - label: has_or_had_provenance
          type: slot
-        - label: RealnessStatus
+        - label: ProvenanceBlock
          type: class

    - original_slot_id: https://nde.nl/ontology/hc/slot/all_links
@ -408,10 +419,10 @@ fixes:

    - original_slot_id: https://nde.nl/ontology/hc/slot/appraisal_notes
      processed:
-        status: false
-        timestamp: null
-        session: null
-        notes: "Maps to Notes class"
+        status: true
+        timestamp: "2026-01-14T10:30:00Z"
+        session: "claude-opus-4-20250514"
+        notes: "Migrated to has_or_had_notes slot with Notes class. Created Notes.yaml, has_or_had_notes.yaml, note_type.yaml, note_content.yaml, note_date.yaml. Updated CustodianArchive.yaml."
      revision:
        - label: has_or_had_notes
          type: slot
@ -608,10 +619,10 @@ fixes:

    - original_slot_id: https://nde.nl/ontology/hc/slot/auxiliary_platform_id
      processed:
-        status: false
-        timestamp: null
-        session: null
-        notes: "Maps to existing Identifier class"
+        status: true
+        timestamp: "2026-01-14T12:15:00Z"
+        session: "session-2026-01-14-identifier-migrations"
+        notes: "Migrated to has_or_had_identifier. Updated AuxiliaryDigitalPlatform.yaml class. Archived auxiliary_platform_id.yaml and has_auxiliary_platform_identifier.yaml"
      revision:
        - label: has_or_had_identifier
          type: slot
@ -757,10 +768,16 @@ fixes:

    - original_slot_id: https://nde.nl/ontology/hc/slot/binding_provenance
      processed:
-        status: false
-        timestamp: null
-        session: null
-        notes: "Maps to existing Provenance class"
+        status: true
+        timestamp: '2026-01-15T00:20:00Z'
+        session: "session-2026-01-14-identifier-migrations"
+        notes: >-
+          FULLY MIGRATED: binding_provenance REMOVED and archived.
+          InformationCarrier.yaml updated to use has_or_had_provenance slot.
+          Updated imports, slots list, and slot_usage with migration note.
+          Note: This slot described physical binding provenance (e.g., royal presentation bindings),
+          which is semantically different from data extraction provenance.
+          Archived: binding_provenance.yaml to archive/ folder per Rule 53.
      revision:
        - label: has_or_had_provenance
          type: slot
@ -957,10 +974,13 @@ fixes:

    - original_slot_id: https://nde.nl/ontology/hc/slot/branch_id
      processed:
-        status: false
-        timestamp: null
-        session: null
-        notes: "Maps to existing Identifier class"
+        status: true
+        timestamp: '2026-01-14T23:45:00Z'
+        session: "session-2026-01-14-identifier-migrations"
+        notes: >-
+          FULLY MIGRATED: branch_id REMOVED and archived.
+          OrganizationBranch.yaml updated to use has_or_had_identifier slot.
+          Archived: branch_id.yaml to archive/ folder per Rule 53.
      revision:
        - label: has_or_had_identifier
          type: slot
@ -969,10 +989,14 @@ fixes:

    - original_slot_id: https://nde.nl/ontology/hc/slot/branch_name
      processed:
-        status: false
-        timestamp: null
-        session: null
-        notes: "Maps to existing Label class"
+        status: true
+        timestamp: '2026-01-15T00:10:00Z'
+        session: "session-2026-01-14-identifier-migrations"
+        notes: >-
+          FULLY MIGRATED: branch_name REMOVED and archived.
+          OrganizationBranch.yaml updated to use has_or_had_label slot.
+          AuxiliaryPlace.yaml examples updated (hosts_branch references).
+          Archived: branch_name.yaml to archive/ folder per Rule 53.
      revision: 
        - label: has_or_had_label
          type: slot
@ -981,10 +1005,14 @@ fixes:

    - original_slot_id: https://nde.nl/ontology/hc/slot/branch_office_description
      processed:
-        status: false
-        timestamp: null
-        session: null
-        notes: "Maps to existing Description class"
+        status: true
+        timestamp: '2026-01-15T00:15:00Z'
+        session: "session-2026-01-14-identifier-migrations"
+        notes: >-
+          FULLY MIGRATED: branch_office_description REMOVED and archived.
+          BranchOffice.yaml updated to use has_or_had_description slot.
+          Updated imports, slots list, slot_usage, class description example, and 2 class examples.
+          Archived: branch_office_description.yaml to archive/ folder per Rule 53.
      revision:
        - label: has_or_had_description
          type: slot
@ -993,10 +1021,13 @@ fixes:

    - original_slot_id: https://nde.nl/ontology/hc/slot/branch_office_id
      processed:
-        status: false
-        timestamp: null
-        session: null
-        notes: "Maps to existing Identifier class"
+        status: true
+        timestamp: '2026-01-14T23:50:00Z'
+        session: "session-2026-01-14-identifier-migrations"
+        notes: >-
+          FULLY MIGRATED: branch_office_id REMOVED and archived.
+          BranchOffice.yaml updated to use has_or_had_identifier slot.
+          Archived: branch_office_id.yaml to archive/ folder per Rule 53.
      revision:
        - label: has_or_had_identifier
          type: slot
@ -1005,10 +1036,14 @@ fixes:

    - original_slot_id: https://nde.nl/ontology/hc/slot/branch_office_name
      processed:
-        status: false
-        timestamp: null
-        session: null
-        notes: "Maps to existing Label class"
+        status: true
+        timestamp: '2026-01-15T00:00:00Z'
+        session: "session-2026-01-14-identifier-migrations"
+        notes: >-
+          FULLY MIGRATED: branch_office_name REMOVED and archived.
+          BranchOffice.yaml updated to use has_or_had_label slot.
+          Updated imports, slots list, slot_usage, class description example, and 2 class examples.
+          Archived: branch_office_name.yaml to archive/ folder per Rule 53.
      revision: 
        - label: has_or_had_label
          type: slot
@ -1237,12 +1272,17 @@ fixes:

    - original_slot_id: https://nde.nl/ontology/hc/slot/cadastral_id
      processed:
-        status: false
-        timestamp: null
-        session: null
-        notes: "Maps to existing Identifier class"
+        status: true
+        timestamp: '2026-01-14T23:55:00Z'
+        session: "session-2026-01-14-identifier-migrations"
+        notes: >-
+          FULLY MIGRATED: cadastral_id REMOVED and archived.
+          GeoSpatialPlace.yaml updated to use has_or_had_identifier slot.
+          Use Identifier with identifier_scheme='cadastral' for parcel IDs.
+          Archived: cadastral_id.yaml to archive/ folder per Rule 53.
      revision:
        - label: has_or_had_identifier
          type: slot
        - label: Identifier
          type: class
+    
--- a/frontend/src/pages/EntityReviewPage.tsx
+++ b/frontend/src/pages/EntityReviewPage.tsx
@ -402,10 +402,11 @@ export default function EntityReviewPage() {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({
+          wcms_ppid: selectedProfile.ppid,
          name: selectedProfile.name,
          email: selectedProfile.email || undefined,
          email_domain: selectedProfile.email_domain || undefined,
-          institution_name: selectedProfile.wcms_identifiers?.institution_name || undefined,
+          institution: selectedProfile.wcms_identifiers?.institution_name || undefined,
        }),
      });
      
--- a/infrastructure/deploy.sh
+++ b/infrastructure/deploy.sh
@ -16,6 +16,7 @@
 #     --all        Deploy everything
 #     --status     Check server status only
 #     --clear      Clear Oxigraph store before loading (use with --data)
+#     --sync-reviews  Sync entity resolution review data FROM server to local

 set -e

@ -69,9 +70,10 @@ DEPLOY_VALKEY=false
 DEPLOY_RAG=false
 CLEAR_OXIGRAPH=false
 STATUS_ONLY=false
+SYNC_REVIEWS=false

 if [ $# -eq 0 ]; then
-  echo "Usage: $0 [--infra] [--data] [--frontend] [--archief] [--api] [--ducklake] [--qdrant] [--valkey] [--rag] [--all] [--status] [--clear]"
+  echo "Usage: $0 [--infra] [--data] [--frontend] [--archief] [--api] [--ducklake] [--qdrant] [--valkey] [--rag] [--all] [--status] [--clear] [--sync-reviews]"
  exit 1
 fi

@ -121,6 +123,9 @@ for arg in "$@"; do
    --status)
      STATUS_ONLY=true
      ;;
+    --sync-reviews)
+      SYNC_REVIEWS=true
+      ;;
    *)
      echo "Unknown option: $arg"
      exit 1
@ -585,6 +590,11 @@ if [ "$DEPLOY_API" = true ]; then
  echo -e "${BLUE}  Deploying FastAPI Backend (DSPy SPARQL Generation)${NC}"
  echo -e "${BLUE}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
  
+  # CRITICAL: Backup review data before deployment to prevent data loss
+  echo -e "${YELLOW}Creating backup of review data before deployment...${NC}"
+  ssh -o StrictHostKeyChecking=no "$SERVER_USER@$SERVER_IP" \
+    "/var/lib/glam/api/backup-reviews.sh 2>/dev/null || echo 'No backup script yet - will be created'"
+  
  # Ensure remote directories exist with proper Python package structure
  echo -e "${YELLOW}Setting up API directory on server...${NC}"
  ssh -o StrictHostKeyChecking=no "$SERVER_USER@$SERVER_IP" \
@ -1088,6 +1098,70 @@ ENDSSH
  echo -e "  External: https://bronhouder.nl/api/rag/"
 fi

+# Sync review data from server
+if [ "$SYNC_REVIEWS" = true ]; then
+  echo ""
+  echo -e "${BLUE}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
+  echo -e "${BLUE}  Syncing Entity Resolution Review Data FROM Server${NC}"
+  echo -e "${BLUE}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
+  
+  LOCAL_ER_DIR="$PROJECT_ROOT/data/entity_resolution"
+  SERVER_ER_DIR="/var/lib/glam/api/data/entity_resolution"
+  BACKUP_DIR="$LOCAL_ER_DIR/backups"
+  
+  # Create backup directory if needed
+  mkdir -p "$BACKUP_DIR"
+  
+  # Check if server file exists
+  echo -e "${YELLOW}Checking server data...${NC}"
+  SERVER_FILE_EXISTS=$(ssh -o StrictHostKeyChecking=no "$SERVER_USER@$SERVER_IP" \
+    "test -f $SERVER_ER_DIR/entity_resolution_candidates.json && echo 'yes' || echo 'no'")
+  
+  if [ "$SERVER_FILE_EXISTS" = "yes" ]; then
+    # Get stats from server
+    echo -e "${YELLOW}Server review stats:${NC}"
+    ssh -o StrictHostKeyChecking=no "$SERVER_USER@$SERVER_IP" \
+      "cat $SERVER_ER_DIR/entity_resolution_candidates.json | python3 -c '
+import json,sys
+d=json.load(sys.stdin)
+reviewed=[c for c in d.get(\"candidates\",[]) if c.get(\"reviewed\")]
+matches=[c for c in reviewed if c.get(\"review_decision\")==\"match\"]
+print(f\"  Total candidates: {len(d.get(\"candidates\",[]))}\" )
+print(f\"  Reviewed: {len(reviewed)} ({len(matches)} matches)\")
+print(f\"  Last review: {d.get(\"metadata\",{}).get(\"last_review_at\",\"N/A\")}\")
+'"
+    
+    # Backup local file
+    if [ -f "$LOCAL_ER_DIR/entity_resolution_candidates.json" ]; then
+      BACKUP_FILE="$BACKUP_DIR/entity_resolution_candidates_local_$(date +%Y%m%d_%H%M%S).json"
+      echo -e "${YELLOW}Backing up local file to: $BACKUP_FILE${NC}"
+      cp "$LOCAL_ER_DIR/entity_resolution_candidates.json" "$BACKUP_FILE"
+    fi
+    
+    # Download server file
+    echo -e "${YELLOW}Downloading server data...${NC}"
+    rsync -avz --progress \
+      -e "ssh -o StrictHostKeyChecking=no" \
+      "$SERVER_USER@$SERVER_IP:$SERVER_ER_DIR/entity_resolution_candidates.json" \
+      "$LOCAL_ER_DIR/entity_resolution_candidates.json"
+    
+    echo -e "${GREEN}Review data synced successfully${NC}"
+    
+    # Show local stats
+    echo -e "${YELLOW}Local file now contains:${NC}"
+    cat "$LOCAL_ER_DIR/entity_resolution_candidates.json" | python3 -c '
+import json,sys
+d=json.load(sys.stdin)
+reviewed=[c for c in d.get("candidates",[]) if c.get("reviewed")]
+matches=[c for c in reviewed if c.get("review_decision")=="match"]
+print(f"  Reviewed: {len(reviewed)} ({len(matches)} matches)")
+'
+  else
+    echo -e "${RED}No entity resolution data found on server${NC}"
+    echo "Server path: $SERVER_ER_DIR/entity_resolution_candidates.json"
+  fi
+fi
+
 # Final status
 echo ""
 echo -e "${BLUE}════════════════════════════════════════════════════════════════${NC}"
--- a/schemas/20251121/linkml/manifest.json
+++ b/schemas/20251121/linkml/manifest.json
@ -1,12 +1,12 @@
 {
-  "generated": "2026-01-14T08:51:14.564Z",
+  "generated": "2026-01-14T11:14:08.309Z",
  "schemaRoot": "/schemas/20251121/linkml",
-  "totalFiles": 2913,
+  "totalFiles": 2896,
  "categoryCounts": {
    "main": 4,
    "class": 671,
    "enum": 147,
-    "slot": 2087,
+    "slot": 2070,
    "module": 4
  },
  "categories": [
@ -1945,6 +1945,11 @@
          "path": "modules/classes/NotarialArchiveRecordSetTypes.yaml",
          "category": "class"
        },
+        {
+          "name": "Notes",
+          "path": "modules/classes/Notes.yaml",
+          "category": "class"
+        },
        {
          "name": "OAIPMHEndpoint",
          "path": "modules/classes/OAIPMHEndpoint.yaml",
@ -2405,11 +2410,6 @@
          "path": "modules/classes/ReadingRoomAnnex.yaml",
          "category": "class"
        },
-        {
-          "name": "RealnessStatus",
-          "path": "modules/classes/RealnessStatus.yaml",
-          "category": "class"
-        },
        {
          "name": "ReconstructedEntity",
          "path": "modules/classes/ReconstructedEntity.yaml",
@ -4157,51 +4157,11 @@
          "path": "modules/slots/accepts_or_accepted_visiting_scholar.yaml",
          "category": "slot"
        },
-        {
-          "name": "activities_societies",
-          "path": "modules/slots/activities_societies.yaml",
-          "category": "slot"
-        },
-        {
-          "name": "actual_end",
-          "path": "modules/slots/actual_end.yaml",
-          "category": "slot"
-        },
-        {
-          "name": "actual_start",
-          "path": "modules/slots/actual_start.yaml",
-          "category": "slot"
-        },
-        {
-          "name": "address_formatted",
-          "path": "modules/slots/address_formatted.yaml",
-          "category": "slot"
-        },
-        {
-          "name": "address_type",
-          "path": "modules/slots/address_type.yaml",
-          "category": "slot"
-        },
-        {
-          "name": "admin_office_id",
-          "path": "modules/slots/admin_office_id.yaml",
-          "category": "slot"
-        },
-        {
-          "name": "administrative_functions",
-          "path": "modules/slots/administrative_functions.yaml",
-          "category": "slot"
-        },
        {
          "name": "affects_or_affected",
          "path": "modules/slots/affects_or_affected.yaml",
          "category": "slot"
        },
-        {
-          "name": "aggregates_from",
-          "path": "modules/slots/aggregates_from.yaml",
-          "category": "slot"
-        },
        {
          "name": "aggregates_or_aggregated_from",
          "path": "modules/slots/aggregates_or_aggregated_from.yaml",
@ -4247,11 +4207,6 @@
          "path": "modules/slots/appointment_required.yaml",
          "category": "slot"
        },
-        {
-          "name": "appraisal_notes",
-          "path": "modules/slots/appraisal_notes.yaml",
-          "category": "slot"
-        },
        {
          "name": "approved_by",
          "path": "modules/slots/approved_by.yaml",
@ -4377,16 +4332,6 @@
          "path": "modules/slots/binding_description.yaml",
          "category": "slot"
        },
-        {
-          "name": "binding_provenance",
-          "path": "modules/slots/binding_provenance.yaml",
-          "category": "slot"
-        },
-        {
-          "name": "binding_type",
-          "path": "modules/slots/binding_type.yaml",
-          "category": "slot"
-        },
        {
          "name": "bio_custodian_subtype",
          "path": "modules/slots/bio_custodian_subtype.yaml",
@ -4452,31 +4397,6 @@
          "path": "modules/slots/branch_head.yaml",
          "category": "slot"
        },
-        {
-          "name": "branch_id",
-          "path": "modules/slots/branch_id.yaml",
-          "category": "slot"
-        },
-        {
-          "name": "branch_name",
-          "path": "modules/slots/branch_name.yaml",
-          "category": "slot"
-        },
-        {
-          "name": "branch_office_description",
-          "path": "modules/slots/branch_office_description.yaml",
-          "category": "slot"
-        },
-        {
-          "name": "branch_office_id",
-          "path": "modules/slots/branch_office_id.yaml",
-          "category": "slot"
-        },
-        {
-          "name": "branch_office_name",
-          "path": "modules/slots/branch_office_name.yaml",
-          "category": "slot"
-        },
        {
          "name": "branch_service_area",
          "path": "modules/slots/branch_service_area.yaml",
@ -4487,11 +4407,6 @@
          "path": "modules/slots/branch_staff_count.yaml",
          "category": "slot"
        },
-        {
-          "name": "branch_type",
-          "path": "modules/slots/branch_type.yaml",
-          "category": "slot"
-        },
        {
          "name": "broader_concept",
          "path": "modules/slots/broader_concept.yaml",
@ -4532,11 +4447,6 @@
          "path": "modules/slots/budget_status.yaml",
          "category": "slot"
        },
-        {
-          "name": "budget_type",
-          "path": "modules/slots/budget_type.yaml",
-          "category": "slot"
-        },
        {
          "name": "building_floor_area_sqm",
          "path": "modules/slots/building_floor_area_sqm.yaml",
@ -4557,11 +4467,6 @@
          "path": "modules/slots/cached_token.yaml",
          "category": "slot"
        },
-        {
-          "name": "cadastral_id",
-          "path": "modules/slots/cadastral_id.yaml",
-          "category": "slot"
-        },
        {
          "name": "call_description",
          "path": "modules/slots/call_description.yaml",
@ -7482,21 +7387,11 @@
          "path": "modules/slots/has_activity_name.yaml",
          "category": "slot"
        },
-        {
-          "name": "has_actual_end_date",
-          "path": "modules/slots/has_actual_end_date.yaml",
-          "category": "slot"
-        },
        {
          "name": "has_actual_return_date",
          "path": "modules/slots/has_actual_return_date.yaml",
          "category": "slot"
        },
-        {
-          "name": "has_actual_start_date",
-          "path": "modules/slots/has_actual_start_date.yaml",
-          "category": "slot"
-        },
        {
          "name": "has_address",
          "path": "modules/slots/has_address.yaml",
@ -8682,6 +8577,11 @@
          "path": "modules/slots/has_or_had_note.yaml",
          "category": "slot"
        },
+        {
+          "name": "has_or_had_notes",
+          "path": "modules/slots/has_or_had_notes.yaml",
+          "category": "slot"
+        },
        {
          "name": "has_or_had_open_access_endpoint",
          "path": "modules/slots/has_or_had_open_access_endpoint.yaml",
@ -8767,6 +8667,11 @@
          "path": "modules/slots/has_or_had_project.yaml",
          "category": "slot"
        },
+        {
+          "name": "has_or_had_provenance",
+          "path": "modules/slots/has_or_had_provenance.yaml",
+          "category": "slot"
+        },
        {
          "name": "has_or_had_provenance_event",
          "path": "modules/slots/has_or_had_provenance_event.yaml",
@ -9712,11 +9617,6 @@
          "path": "modules/slots/is_or_was_platform_of.yaml",
          "category": "slot"
        },
-        {
-          "name": "is_or_was_real",
-          "path": "modules/slots/is_or_was_real.yaml",
-          "category": "slot"
-        },
        {
          "name": "is_or_was_related_to",
          "path": "modules/slots/is_or_was_related_to.yaml",
@ -10777,6 +10677,21 @@
          "path": "modules/slots/note.yaml",
          "category": "slot"
        },
+        {
+          "name": "note_content",
+          "path": "modules/slots/note_content.yaml",
+          "category": "slot"
+        },
+        {
+          "name": "note_date",
+          "path": "modules/slots/note_date.yaml",
+          "category": "slot"
+        },
+        {
+          "name": "note_type",
+          "path": "modules/slots/note_type.yaml",
+          "category": "slot"
+        },
        {
          "name": "oai_pmh_endpoint",
          "path": "modules/slots/oai_pmh_endpoint.yaml",
--- a/schemas/20251121/linkml/modules/classes/AcademicArchive.yaml
+++ b/schemas/20251121/linkml/modules/classes/AcademicArchive.yaml
@ -17,7 +17,7 @@ imports:
 - ../slots/has_or_had_custodian_type
 - ../slots/dual_class_link
 - ../slots/broader_concept
- ../slots/broader_concept_label
+- ../slots/has_or_had_label
 - ../slots/specificity_annotation
 - ../slots/template_specificity
 - ../slots/wikidata_alignment
@ -36,7 +36,7 @@ classes:
    - dual_class_link
    - has_or_had_holds_record_set_type
    - broader_concept
-    - broader_concept_label
+    - has_or_had_label
    - specificity_annotation
    - template_specificity
    - wikidata_alignment
@ -84,7 +84,11 @@ classes:
        inlined: true
      broader_concept:
        equals_expression: '["wd:Q166118"]'
-      broader_concept_label:
+      has_or_had_label:
+        description: >-
+          Human-readable label for the broader concept.
+          Stored for display to avoid repeated lookups.
+          MIGRATED from broader_concept_label (2026-01-15) per Rule 53.
        equals_string: archive
      dual_class_link:
        range: DualClassLink
--- a/schemas/20251121/linkml/modules/classes/AccessPolicy.yaml
+++ b/schemas/20251121/linkml/modules/classes/AccessPolicy.yaml
@ -21,7 +21,9 @@ imports:
 - ../slots/policy_name
 - ../slots/has_or_had_access_description
 - ../slots/has_or_had_access_level
- ../slots/appointment_required
+# REMOVED 2026-01-15: ../slots/appointment_required - migrated to is_or_was_required
+# REMOVED 2026-01-15: ../slots/has_appointment_required_flag - consolidated to is_or_was_required
+- ../slots/is_or_was_required
 - ../slots/condition
 - ../slots/credentials_required
 - ../slots/cultural_protocol_url
@ -37,7 +39,6 @@ imports:
 - ../slots/template_specificity
 - ./SpecificityAnnotation
 - ./TemplateSpecificityScores
- ../slots/has_appointment_required_flag
 classes:
  AccessPolicy:
    class_uri: premis:RightsStatus
@ -64,7 +65,7 @@ classes:
      Valid ID required for registration\"\n   ```\n\n2. **Restricted Research Materials**:\n   ```yaml\n   AccessPolicy:\n\
      \     policy_id: \"hc:access-policy/university-special-collections\"\n     access_level: \"RESEARCHERS_ONLY\"\n    \
      \ access_description: \"Academic researchers with institutional affiliation\"\n     conditions: \"Letter of introduction\
-      \ required from supervising institution\"\n     appointment_required: true\n   ```\n\n3. **Embargoed Collection**:\n\
+      \ required from supervising institution\"\n     is_or_was_required: true\n   ```\n\n3. **Embargoed Collection**:\n\
      \   ```yaml\n   AccessPolicy:\n     policy_id: \"hc:access-policy/donor-embargo-2050\"\n     access_level: \"EMBARGOED\"\
      \n     access_description: \"Closed until 2050 per donor agreement\"\n     embargo_end_date: \"2050-01-01\"\n     embargo_reason:\
      \ \"Donor privacy restrictions\"\n   ```\n\n4. **Culturally Sensitive**:\n   ```yaml\n   AccessPolicy:\n     policy_id:\
@ -85,7 +86,8 @@ classes:
    slots:
    - has_or_had_access_description
    - has_or_had_access_level
-    - appointment_required
+    # REMOVED 2026-01-15: appointment_required - migrated to is_or_was_required
+    - is_or_was_required
    - condition
    - contact_email
    - credentials_required
@ -160,8 +162,12 @@ classes:
          description: In Copyright
        - value: http://rightsstatements.org/vocab/NoC-US/1.0/
          description: No Copyright - United States
-      has_appointment_required_flag:
+      is_or_was_required:
        range: boolean
+        description: |
+          Whether an appointment is required for access.
+          MIGRATED 2026-01-15: Replaces appointment_required and has_appointment_required_flag per Rule 53.
+          Consolidated to generic is_or_was_required slot.
        examples:
        - value: true
          description: Appointment required
@ -251,7 +257,7 @@ classes:
        - Registration form must be completed
        - Original materials handled with gloves
        registration_required: true
-        appointment_required: false
+        is_or_was_required: false  # MIGRATED 2026-01-15: was appointment_required
        fee_required: false
        contact_email: studiezaal@nationaalarchief.nl
      description: Standard archive public access policy
@ -273,7 +279,7 @@ classes:
        condition:
        - Awaiting processing and cataloging
        - Access may be arranged for urgent research needs
-        appointment_required: true
+        is_or_was_required: true  # MIGRATED 2026-01-15: was appointment_required
        credentials_required: PROFESSIONAL
        contact_email: preservation@archive.org
      description: Dark archive / DIM access policy
--- a/schemas/20251121/linkml/modules/classes/AuxiliaryPlace.yaml
+++ b/schemas/20251121/linkml/modules/classes/AuxiliaryPlace.yaml
@ -101,7 +101,7 @@ classes:
      \n  preferred_label: \"Rijksmuseum\"\n  place_designation:\n    place_name: \"Rijksmuseum\"  # Main building on Museumplein\n\
      \    auxiliary_places:\n      - place_name: \"Depot Amersfoort\"\n        auxiliary_place_type: STORAGE_FACILITY\n \
      \       street_address: \"Euterpelaan 25, Amersfoort\"\n      - place_name: \"Rijksmuseum Schiphol\"\n        auxiliary_place_type:\
-      \ BRANCH_OFFICE\n        street_address: \"Schiphol Airport, Lounge 2\"\n        hosts_branch:\n          branch_name:\
+      \ BRANCH_OFFICE\n        street_address: \"Schiphol Airport, Lounge 2\"\n        hosts_branch:\n          has_or_had_label:\
      \ \"Schiphol Exhibition Space\"\n```\n\n**TEMPORAL VALIDITY**:\n\nAuxiliary places can open/close independently:\n-\
      \ Storage facility opened 1995, closed 2010 (moved to new location)\n- Branch office valid_from 2000, valid_to null\
      \ (still active)\n\nTrack with valid_from/valid_to or temporal_extent (for fuzzy dates).\n"
@ -279,7 +279,7 @@ classes:
        inlined_as_list: true
        examples:
        - value:
-            branch_name: Conservation Division - Amersfoort
+            has_or_had_label: Conservation Division - Amersfoort
            branch_type: CONSERVATION_LAB
          description: Conservation branch at depot site
      is_auxiliary_of_place:
@ -358,7 +358,7 @@ classes:
        country: https://nde.nl/ontology/hc/country/NL
        valid_from: '2002-10-01'
        hosts_branch:
-        - branch_name: Schiphol Exhibition Team
+        - has_or_had_label: Schiphol Exhibition Team
          branch_type: EXHIBITION_SPACE
        is_auxiliary_of_place: https://nde.nl/ontology/hc/place/rijksmuseum-main
        refers_to_custodian: https://nde.nl/ontology/hc/nl-nh-ams-m-rm-q190804
--- a/schemas/20251121/linkml/modules/classes/BranchOffice.yaml
+++ b/schemas/20251121/linkml/modules/classes/BranchOffice.yaml
@ -6,9 +6,9 @@ imports:
 - ./ReconstructedEntity
 - ./CustodianObservation
 - ./ReconstructionActivity
- ../slots/branch_office_description
- ../slots/branch_office_id
- ../slots/branch_office_name
+- ../slots/has_or_had_description
+- ../slots/has_or_had_identifier
+- ../slots/has_or_had_label
 - ../slots/branch_service_area
 - ../slots/branch_staff_count
 - ../slots/has_local_collection
@ -50,8 +50,8 @@ classes:
      \ Zaanstreek-Waterland branch\n   - Serves researchers in Zaandam area\n   - Holds local municipal records\n\n2. **Library\
      \ Satellite Locations**:\n   - University library branch at satellite campus\n   - Public library neighborhood branches\n\
      \n3. **Museum Study Centers**:\n   - Off-site study/research center for scholars\n   - Rijksmuseum Schiphol (airport\
-      \ exhibition space)\n\n**Example - Regional Archive Branch**:\n```yaml\nBranchOffice:\n  branch_office_id: \"https://nde.nl/ontology/hc/aux/nha-zaanstreek-branch\"\
-      \n  branch_office_name: \"Noord-Hollands Archief - Zaanstreek-Waterland\"\n  branch_office_description: |\n    Regional\
+      \ exhibition space)\n\n**Example - Regional Archive Branch**:\n```yaml\nBranchOffice:\n  has_or_had_identifier: \"https://nde.nl/ontology/hc/aux/nha-zaanstreek-branch\"\
+      \n  has_or_had_label: \"Noord-Hollands Archief - Zaanstreek-Waterland\"\n  has_or_had_description: |\n    Regional\
      \ branch serving Zaanstreek-Waterland area.\n    Holds municipal records from Zaandam, Wormerland, Purmerend.\n    Open\
      \ to researchers Tuesday-Thursday.\n  branch_service_area: \"Zaanstreek-Waterland region\"\n  is_public_facing: true\n\
      \  services_offered:\n    - \"Archival research access\"\n    - \"Genealogical consultations\"\n    - \"Local history\
@ -66,9 +66,9 @@ classes:
    - org:OrganizationalUnit
    - schema:branch
    slots:
-    - branch_office_description
-    - branch_office_id
-    - branch_office_name
+    - has_or_had_description
+    - has_or_had_identifier
+    - has_or_had_label
    - branch_service_area
    - branch_staff_count
    - has_local_collection
@ -80,16 +80,24 @@ classes:
    - was_derived_from
    - was_generated_by
    slot_usage:
-      branch_office_id:
+      has_or_had_identifier:
        range: uriorcurie
        required: true
        identifier: true
+        description: >-
+          Unique identifier for this branch office.
+          MIGRATED from branch_office_id (2026-01-14) per Rule 53.
        examples:
        - value: https://nde.nl/ontology/hc/aux/nha-zaanstreek-branch
          description: Noord-Hollands Archief regional branch
-      branch_office_name:
+      has_or_had_label:
        range: string
        required: true
+        multivalued: false
+        description: >-
+          Name of this branch office.
+          MIGRATED from branch_office_name (2026-01-14) per Rule 53.
+          Typically includes parent organization name + branch location/function.
        examples:
        - value: Noord-Hollands Archief - Zaanstreek-Waterland
          description: Regional archive branch
@ -97,8 +105,12 @@ classes:
          description: Airport exhibition branch
        - value: Universiteitsbibliotheek Science Park
          description: University library satellite
-      branch_office_description:
+      has_or_had_description:
        range: string
+        description: >-
+          Description of this branch office, including services offered,
+          target audience, and distinguishing features.
+          MIGRATED from branch_office_description (2026-01-15) per Rule 53.
        examples:
        - value: Regional branch serving Zaanstreek-Waterland area. Holds municipal records from Zaandam, Wormerland, Purmerend.
            Open to researchers Tuesday-Thursday.
@ -161,9 +173,9 @@ classes:
    - https://schema.org/branch
    examples:
    - value:
-        branch_office_id: https://nde.nl/ontology/hc/aux/nha-zaanstreek-branch
-        branch_office_name: Noord-Hollands Archief - Zaanstreek-Waterland
-        branch_office_description: Regional branch serving Zaanstreek-Waterland area. Holds municipal records from Zaandam,
+        has_or_had_identifier: https://nde.nl/ontology/hc/aux/nha-zaanstreek-branch
+        has_or_had_label: Noord-Hollands Archief - Zaanstreek-Waterland
+        has_or_had_description: Regional branch serving Zaanstreek-Waterland area. Holds municipal records from Zaandam,
          Wormerland, Purmerend.
        branch_service_area: Zaanstreek-Waterland region
        is_public_facing: true
@ -176,9 +188,9 @@ classes:
        has_local_collection: true
      description: Regional archive branch
    - value:
-        branch_office_id: https://nde.nl/ontology/hc/aux/rijksmuseum-schiphol
-        branch_office_name: Rijksmuseum Schiphol
-        branch_office_description: Exhibition space at Schiphol Airport featuring rotating highlights from the Rijksmuseum
+        has_or_had_identifier: https://nde.nl/ontology/hc/aux/rijksmuseum-schiphol
+        has_or_had_label: Rijksmuseum Schiphol
+        has_or_had_description: Exhibition space at Schiphol Airport featuring rotating highlights from the Rijksmuseum
          collection. Free admission.
        branch_service_area: Amsterdam Schiphol Airport travelers
        is_public_facing: true
--- a/schemas/20251121/linkml/modules/classes/Budget.yaml
+++ b/schemas/20251121/linkml/modules/classes/Budget.yaml
@ -14,8 +14,8 @@ imports:
 - ../slots/has_or_had_acquisition_budget
 - ../slots/approved_by
 - ../slots/budget_currency
- ../slots/budget_description
- ../slots/budget_name
+- ../slots/has_or_had_description
+- ../slots/has_or_had_label
 - ../slots/budget_status
 - ../slots/has_or_had_type
 - ../slots/capital_budget
@ -94,8 +94,8 @@ classes:
    - has_approval_date
    - approved_by
    - budget_currency
-    - budget_description
-    - budget_name
+    - has_or_had_description
+    - has_or_had_label
    - budget_status
    - has_or_had_type
    - capital_budget
@ -129,9 +129,39 @@ classes:
      budget_name:
        range: string
        required: true
+        description: >-
+          DEPRECATED: Use has_or_had_label instead.
+          MIGRATION: 2026-01-15 - Replaced by has_or_had_label slot per Rule 53.
+        deprecated: "Use has_or_had_label instead"
+      has_or_had_label:
+        range: string
+        required: true
+        description: >-
+          Name/title for this budget document.
+          MIGRATED from budget_name (2026-01-15) per Rule 53.
+          Maps to dcterms:title as a formal title for a financial planning resource.
+        examples:
+        - value: Rijksmuseum Operating Budget FY2024
+          description: Major museum annual budget
+        - value: Noord-Hollands Archief Annual Budget 2024-2025
+          description: Provincial archive budget
      budget_description:
        range: string
        required: false
+        description: >-
+          DEPRECATED: Use has_or_had_description instead.
+          MIGRATION: 2026-01-15 - Replaced by has_or_had_description slot per Rule 53.
+        deprecated: "Use has_or_had_description instead"
+      has_or_had_description:
+        range: string
+        required: false
+        description: >-
+          Narrative description of this budget document's scope and purpose.
+          MIGRATED from budget_description (2026-01-15) per Rule 53.
+          Maps to dcterms:description for financial planning documentation.
+        examples:
+        - value: Annual operating budget for fiscal year 2024, including major exhibition initiatives and digitization expansion.
+          description: Comprehensive budget description
      budget_type:
        range: string
        multivalued: true
@ -265,8 +295,8 @@ classes:
    examples:
    - value:
        id: https://nde.nl/ontology/hc/budget/rm/fy2024
-        budget_name: Rijksmuseum Operating Budget FY2024
-        budget_description: Annual operating budget for fiscal year 2024, including major exhibition initiatives and digitization
+        has_or_had_label: Rijksmuseum Operating Budget FY2024
+        has_or_had_description: Annual operating budget for fiscal year 2024, including major exhibition initiatives and digitization
          expansion.
        budget_type:
        - OPERATING
@ -292,8 +322,8 @@ classes:
      description: Major museum annual operating budget
    - value:
        id: https://nde.nl/ontology/hc/budget/nha/fy2024-2025
-        budget_name: Noord-Hollands Archief Annual Budget 2024-2025
-        budget_description: Provincial archive annual budget aligned with government fiscal year.
+        has_or_had_label: Noord-Hollands Archief Annual Budget 2024-2025
+        has_or_had_description: Provincial archive annual budget aligned with government fiscal year.
        budget_type:
        - OPERATING
        - CONSOLIDATED
--- a/schemas/20251121/linkml/modules/classes/CollectionType.yaml
+++ b/schemas/20251121/linkml/modules/classes/CollectionType.yaml
@ -13,7 +13,7 @@ default_prefix: hc
 imports:
 - linkml:types
 - ../slots/record_equivalent
- ../slots/bibframe_equivalent
+# REMOVED: ../slots/bibframe_equivalent - Use LinkML close_mappings instead (2026-01-15)
 - ../slots/collection_broader_type
 - ../slots/has_or_had_collection_narrower_type
 - ../slots/collection_type_description
@ -49,10 +49,10 @@ classes:
      \ | rico:Fonds | Provenance-based archival unit |\n| SERIES | rico:Series | Subdivision of fonds |\n| FILE | rico:File\
      \ | Individual file/dossier |\n| ITEM | rico:Item | Single record |\n| ARTIFICIAL_COLLECTION | rico:Collection | Non-provenance\
      \ assemblage |\n\n**USE CASES**:\n\n1. **Archival Classification**:\n   ```yaml\n   CollectionType:\n     type_id: \"\
-      hc:collection-type/fonds\"\n     type_name: \"Fonds\"\n     record_equivalent: \"rico:Fonds\"\n     description: \"\
+             hc:collection-type/fonds\"\n     type_name: \"Fonds\"\n     record_equivalent: \"rico:Fonds\"\n     description: \"\
      Provenance-based archival unit\"\n   ```\n\n2. **Library Special Collection**:\n   ```yaml\n   CollectionType:\n   \
-      \  type_id: \"hc:collection-type/special-collection\"\n     type_name: \"Special Collection\"\n     bibframe_equivalent:\
-      \ \"bf:Collection\"\n     description: \"Named library special collection\"\n   ```\n\n3. **Museum Named Collection**:\n\
+      \  type_id: \"hc:collection-type/special-collection\"\n     type_name: \"Special Collection\"\n     # BIBFRAME mapping at class level via close_mappings: [bf:CollectionType]\n     description:\
+      \ \"Named library special collection\"\n   ```\n\n3. **Museum Named Collection**:\n\
      \   ```yaml\n   CollectionType:\n     type_id: \"hc:collection-type/named-collection\"\n     type_name: \"Named Collection\"\
      \n     description: \"Collection named for donor or subject\"\n   ```\n"
    exact_mappings:
@ -62,7 +62,7 @@ classes:
    - bf:CollectionType
    - dcterms:DCMIType
    slots:
-    - bibframe_equivalent
+    # REMOVED: bibframe_equivalent - Use LinkML close_mappings instead (2026-01-15)
    - collection_broader_type
    - has_or_had_collection_narrower_type
    - collection_type_description
@ -107,13 +107,8 @@ classes:
          description: RiC-O Series
        - value: rico:Collection
          description: RiC-O Collection (assembled)
-      bibframe_equivalent:
-        range: uriorcurie
-        examples:
-        - value: bf:Collection
-          description: BIBFRAME Collection
-        - value: bf:Archival
-          description: BIBFRAME Archival
+      # REMOVED: bibframe_equivalent slot_usage - Use LinkML close_mappings instead (2026-01-15)
+      # BIBFRAME mappings are now at class level: close_mappings: [bf:CollectionType]
      wikidata_equivalent:
        range: string
        pattern: ^Q[0-9]+$
@ -173,6 +168,6 @@ classes:
        collection_type_name: Special Collection
        collection_type_description: A named special collection within a library, often focusing on a particular subject,
          format, or provenance.
-        bibframe_equivalent: bf:Collection
+        # BIBFRAME mapping at class level via close_mappings: [bf:CollectionType]
        domain_context: LIBRARY
      description: Library special collection type
--- a/schemas/20251121/linkml/modules/classes/CurationActivity.yaml
+++ b/schemas/20251121/linkml/modules/classes/CurationActivity.yaml
@ -9,7 +9,7 @@
 # Keeps curation-specific slots:
 # - curated_holding, objects_affected, objects_added, objects_removed
 # - responsible_actor, responsible_department, spectrum_procedure
-# - budget, funding_source, deliverable, documentation_produced
+# - is_or_was_allocated_budget (MIGRATED 2026-01-15: was budget), funding_source, deliverable, documentation_produced
 #
 # Rule compliance: 38, 39, 42, 43, 48

@ -38,7 +38,8 @@ imports:
  - ./ExhibitedObject
  - ./PersonObservation
  - ../enums/CurationActivityTypeEnum
-  - ../slots/budget
+  # REMOVED 2026-01-15: ../slots/budget - migrated to is_or_was_allocated_budget
+  - ../slots/is_or_was_allocated_budget
  - ../slots/curated_holding
  - ../slots/deliverable
  - ../slots/documentation_produced
@ -168,7 +169,8 @@ classes:

    # Curation-specific slots (in addition to inherited Activity slots)
    slots:
-      - budget
+      # REMOVED 2026-01-15: budget - migrated to is_or_was_allocated_budget
+      - is_or_was_allocated_budget
      - curated_holding
      - has_or_had_custodian_type
      - deliverable
@ -323,9 +325,12 @@ classes:
          - value: Friends of the Museum donation
            description: Donor-funded
      
-      budget:
+      is_or_was_allocated_budget:
        range: string
-        description: Budget allocated for this activity.
+        description: |
+          Budget allocated for this activity.
+          MIGRATED 2026-01-15: Replaces budget slot per Rule 53.
+          For structured budget information, override range to Budget class.
        examples:
          - value: EUR 125,000
            description: Digitization project budget
@ -439,7 +444,7 @@ classes:
          deliverable:
            - https://www.nationaalarchief.nl/onderzoeken/archief/1.04.02/digital
          funding_source: Metamorfoze National Digitization Programme
-          budget: EUR 850,000
+          is_or_was_allocated_budget: EUR 850,000  # MIGRATED 2026-01-15: was budget
          status: IN_PROGRESS
          priority: HIGH
          spectrum_procedure: documentation
@ -466,7 +471,7 @@ classes:
            - Before/after condition photographs
            - Updated location records in CMS
          funding_source: Andrew W. Mellon Foundation Grant
-          budget: EUR 95,000
+          is_or_was_allocated_budget: EUR 95,000  # MIGRATED 2026-01-15: was budget
          status: PLANNED
          priority: HIGH
          spectrum_procedure: object-storage
--- a/schemas/20251121/linkml/modules/classes/CustodianAdministration.yaml
+++ b/schemas/20251121/linkml/modules/classes/CustodianAdministration.yaml
@ -14,7 +14,7 @@ imports:
 - ../slots/has_or_had_access_control
 - ../slots/has_administration_description
 - ../slots/has_administration_name
- ../slots/backup_status
+# REMOVED 2026-01-15: ../slots/backup_status - migrated to has_or_had_status with BackupStatus
 - ../slots/has_or_had_status
 - ./BackupStatus
 - ../slots/business_criticality
@ -107,7 +107,7 @@ classes:
    - is_or_was_active_since
    - has_administration_description
    - has_administration_name
-    - backup_status
+    # REMOVED 2026-01-15: backup_status - migrated to has_or_had_status with BackupStatus
    - has_or_had_status
    - business_criticality
    - creating_function
@ -303,7 +303,11 @@ classes:
        data_sensitivity: CONFIDENTIAL
        gdpr_relevant: true
        business_criticality: HIGH
-        backup_status: Daily backup to Azure, replicated to secondary site
+        has_or_had_status:
+          has_or_had_type:
+            - has_or_had_short_code: DAILY_AUTOMATED
+            - has_or_had_short_code: CLOUD_AZURE
+          has_or_had_description: Daily backup to Azure, replicated to secondary site
        access_control: 'AD Group: RM-Directors-Staff'
        refers_to_custodian: https://nde.nl/ontology/hc/nl-nh-ams-m-rm-q190804
      description: Active director's correspondence system
@ -327,7 +331,11 @@ classes:
        data_sensitivity: SPECIAL_CATEGORY - Personnel data
        gdpr_relevant: true
        business_criticality: CRITICAL
-        backup_status: Real-time replication, encrypted at rest
+        has_or_had_status:
+          has_or_had_type:
+            - has_or_had_short_code: REALTIME_REPLICATION
+            - has_or_had_short_code: ENCRYPTED_AT_REST
+          has_or_had_description: Real-time replication, encrypted at rest
        access_control: HR Department only, individual file permissions
        refers_to_custodian: https://nde.nl/ontology/hc/nl-nh-ams-m-rm-q190804
      description: Active HR personnel records system
@ -353,6 +361,10 @@ classes:
        data_sensitivity: INTERNAL
        gdpr_relevant: false
        business_criticality: HIGH
-        backup_status: Daily backup, 10-year retention, linked to object records
+        has_or_had_status:
+          has_or_had_type:
+            - has_or_had_short_code: DAILY_AUTOMATED
+            - has_or_had_short_code: LONG_RETENTION
+          has_or_had_description: Daily backup, 10-year retention, linked to object records
        refers_to_custodian: https://nde.nl/ontology/hc/nl-nh-ams-m-rm-q190804
      description: Active conservation treatment documentation
--- a/schemas/20251121/linkml/modules/classes/CustodianArchive.yaml
+++ b/schemas/20251121/linkml/modules/classes/CustodianArchive.yaml
@ -23,7 +23,8 @@ imports:
 - ../slots/has_accession_date
 - ../slots/has_accumulation_end_date
 - ../slots/has_accumulation_start_date
- ../slots/appraisal_notes
+- ../slots/has_or_had_notes
+- ./Notes
 - ../slots/has_archive_description
 - ../slots/has_archive_name
 - ../slots/arrangement_notes
@ -75,7 +76,7 @@ classes:
    - has_accession_number
    - has_accumulation_end_date
    - has_accumulation_start_date
-    - appraisal_notes
+    - has_or_had_notes
    - has_archive_description
    - has_archive_name
    - arrangement_notes
@ -258,12 +259,17 @@ classes:
        examples:
        - value: Closed - Contains personnel files with personal data
          description: Privacy restriction
-      has_appraisal_note:
-        range: string
+      has_or_had_notes:
+        range: Notes
+        multivalued: true
+        inlined: true
        required: false
        examples:
-        - value: Retained all policy files; destroyed duplicate copies and routine correspondence per retention schedule RS-2020-05
-          description: Appraisal decisions documented
+        - value: |
+            - note_type: appraisal
+              note_content: "Retained all policy files; destroyed duplicate copies and routine correspondence per retention schedule RS-2020-05"
+              note_date: "2024-03-15"
+          description: Appraisal decisions documented as typed note
      has_arrangement_note:
        range: string
        required: false
@ -344,6 +350,9 @@ classes:
        estimated_extent: 85 linear meters
        assigned_processor: Dr. Jan de Vries
        processing_started_date: '2024-01-10'
-        appraisal_notes: Retained all policy files; weeded duplicate copies per retention schedule.
+        has_or_had_notes:
+          - note_type: appraisal
+            note_content: "Retained all policy files; weeded duplicate copies per retention schedule."
+            note_date: "2024-01-10"
        refers_to_custodian: https://nde.nl/ontology/hc/nl-na
      description: Government records in active processing (9 years after accession)
--- a/schemas/20251121/linkml/modules/classes/CustodianType.yaml
+++ b/schemas/20251121/linkml/modules/classes/CustodianType.yaml
@ -8,7 +8,7 @@ imports:
 - ../slots/created
 - ../slots/modified
 - ../slots/wikidata_entity
- ../slots/applicable_countries
+# - ../slots/applicable_countries  # MIGRATED 2026-01-15: replaced by has_applicable_country
 - ../slots/glamorcubesfixphdnt_code
 - ../slots/specificity_annotation
 - ../slots/template_specificity
@ -66,7 +66,8 @@ classes:
    - org:classification
    - schema:additionalType
    slots:
-    - applicable_countries
+    # - applicable_countries  # MIGRATED 2026-01-15: replaced by has_applicable_country
+    - has_applicable_country
    - created
    - custodian_type_broader
    - custodian_type_narrower
@ -112,6 +113,7 @@ classes:
        multivalued: true
        required: false
      has_applicable_country:
+        description: "ISO 3166-1 alpha-2 country codes where this type applies. Empty = worldwide. (MIGRATED 2026-01-15: was applicable_countries)"
        range: string
        multivalued: true
        required: false
--- a/schemas/20251121/linkml/modules/classes/DataServiceEndpoint.yaml
+++ b/schemas/20251121/linkml/modules/classes/DataServiceEndpoint.yaml
@ -15,7 +15,8 @@ imports:
 - ./DataServiceEndpointType
 - ../slots/protocol
 - ../slots/response_format
- ../slots/authentication_required
+# REMOVED 2026-01-15: ../slots/authentication_required - migrated to is_or_was_required
+- ../slots/is_or_was_required
 - ../slots/specificity_annotation
 - ../slots/template_specificity
 - ./SpecificityAnnotation
@ -28,7 +29,8 @@ classes:
    abstract: true
    class_uri: dcat:DataService
    slots:
-    - authentication_required
+    # REMOVED 2026-01-15: authentication_required - migrated to is_or_was_required
+    - is_or_was_required
    - protocol
    - response_format
    - specificity_annotation
@ -136,7 +138,7 @@ classes:
        range: uri
      authentication_method:
        slot_uri: schema:potentialAction
-        description: 'Authentication method required (if authentication_required is true).
+        description: 'Authentication method required (if is_or_was_required is true).


          Values from AuthenticationMethodEnum:
@ -289,7 +291,7 @@ classes:
          \nThis slot links an INSTANCE (DataServiceEndpoint) to its TYPE classification\n(DataServiceEndpointType), following\
          \ the same architectural pattern as\nCustodian/CustodianType.\n\n```\nDataServiceEndpoint (INSTANCE)     DataServiceEndpointType\
          \ (TYPE)\n├── endpoint_url                   ├── protocol_name\n├── status                         ├── protocol_version\n\
-          ├── authentication_required        ├── specification_url\n└── endpoint_type ────────────────►└── typical_response_formats\n\
+           ├── is_or_was_required            ├── specification_url\n└── endpoint_type ────────────────►└── typical_response_formats\n\
          ```\n\n**Why Both `protocol` and `endpoint_type`?**\n\n- `protocol` (enum): Simple string classification for quick\
          \ filtering\n- `endpoint_type` (class reference): Rich type metadata with SKOS hierarchy,\n  specification URLs,\
          \ and semantic relationships\n\n**Example:**\n\n```yaml\ndata_service_endpoint:\n  endpoint_id: \"https://nde.nl/hc/endpoint/na-oai-pmh\"\
--- a/schemas/20251121/linkml/modules/classes/EducationCenter.yaml
+++ b/schemas/20251121/linkml/modules/classes/EducationCenter.yaml
@ -9,7 +9,8 @@ imports:
 - ../enums/EducationProviderTypeEnum
 - ../slots/has_or_had_accessibility_feature
 - ../slots/annual_participants
- ../slots/booking_required
+# REMOVED 2026-01-15: ../slots/booking_required - migrated to is_or_was_required
+- ../slots/is_or_was_required
 - ../slots/classroom_count
 - ../slots/has_or_had_custodian_type
 - ../slots/education_center_description
@ -79,7 +80,8 @@ classes:
    slots:
    - has_or_had_accessibility_feature
    - annual_participants
-    - booking_required
+    # REMOVED 2026-01-15: booking_required - migrated to is_or_was_required
+    - is_or_was_required
    - classroom_count
    - has_or_had_custodian_type
    - education_center_description
@ -197,11 +199,14 @@ classes:
        examples:
        - value: 8
          description: Education team size
-      booking_required:
+      is_or_was_required:
        range: boolean
+        description: |
+          Whether advance booking is required for education programs.
+          MIGRATED 2026-01-15: Replaces booking_required slot.
        examples:
        - value: true
-          description: Booking required
+          description: Booking required for programs
      education_contact_email:
        range: string
        examples:
@ -252,7 +257,7 @@ classes:
        - Hearing loop
        annual_participants: 75000
        staff_count: 12
-        booking_required: true
+        is_or_was_required: true
        education_contact_email: educatie@rijksmuseum.nl
      description: Major museum education center
    - value:
@ -272,5 +277,5 @@ classes:
        classroom_count: 2
        max_group_size: 20
        has_av_equipment: true
-        booking_required: true
+        is_or_was_required: true
      description: Archive learning center
--- a/schemas/20251121/linkml/modules/classes/ExhibitionCatalog.yaml
+++ b/schemas/20251121/linkml/modules/classes/ExhibitionCatalog.yaml
@ -21,7 +21,9 @@ imports:
 - ../slots/language
 - ../slots/price
 - ../slots/authors
- ../slots/binding
+# REMOVED: ../slots/binding - Use has_or_had_type with BindingType instead (2026-01-15)
+- ../slots/has_or_had_type
+- ./BindingType
 - ../slots/catalog_description
 - ../slots/catalog_entries_count
 - ../slots/catalog_for
@ -79,7 +81,8 @@ classes:
    - bibo:Book
    slots:
    - authors
-    - binding
+    # REMOVED: binding - Use has_or_had_type with BindingType instead (2026-01-15)
+    - has_or_had_type
    - catalog_description
    - catalog_entries_count
    - catalog_for
@ -217,12 +220,24 @@ classes:
        examples:
        - value: 280 color illustrations
        - value: 150 color plates, 50 b/w figures
-      binding:
+      # DEPRECATED: binding slot - Use has_or_had_type with BindingType instead (2026-01-15)
+      # binding:
+      #   required: false
+      #   range: string
+      #   deprecated: "Use has_or_had_type with BindingType instead"
+      has_or_had_type:
        required: false
-        range: string
+        range: BindingType
+        description: >-
+          The binding type of the catalog (hardcover, paperback, etc.).
+          MIGRATED from binding slot (2026-01-15) per Rule 53.
+          
+          Uses BindingType class hierarchy for structured binding classification.
        examples:
-        - value: hardcover
-        - value: paperback
+        - value: hc:HardcoverBinding
+          description: Hardcover binding type
+        - value: hc:PaperbackBinding
+          description: Paperback binding type
      language:
        required: false
        range: string
@ -336,7 +351,7 @@ classes:
        isbn_13: '9789491714962'
        pages: 320
        illustrations: 280 color illustrations
-        binding: hardcover
+        has_or_had_type: hc:HardcoverBinding  # Migrated from binding: hardcover
        language:
        - en
        catalog_url: https://www.rijksmuseum.nl/nl/webshop/catalogus-vermeer
@ -365,7 +380,7 @@ classes:
        isbn_13: '9780870709159'
        pages: 298
        illustrations: 230 illustrations
-        binding: hardcover
+        has_or_had_type: hc:HardcoverBinding  # Migrated from binding: hardcover
        language:
        - en
        price: $60.00
--- a/schemas/20251121/linkml/modules/classes/GeoSpatialPlace.yaml
+++ b/schemas/20251121/linkml/modules/classes/GeoSpatialPlace.yaml
@ -17,7 +17,7 @@ imports:
 - ../slots/has_altitude
 - ../slots/has_accuracy_in_meters
 - ../slots/bounding_box
- ../slots/cadastral_id
+- ../slots/has_or_had_identifier
 - ../slots/coordinate_reference_system
 - ../slots/feature_class
 - ../slots/feature_code
@ -159,7 +159,7 @@ classes:
    - has_accuracy_in_meters
    - has_altitude
    - bounding_box
-    - cadastral_id
+    - has_or_had_identifier
    - coordinate_reference_system
    - feature_class
    - feature_code
@ -203,6 +203,17 @@ classes:
        examples:
        - value: 6930126
          description: Rijksmuseum GeoNames ID
+      has_or_had_identifier:
+        description: >-
+          Cadastral identifiers for this geospatial place.
+          MIGRATION NOTE (2026-01-14): Replaces cadastral_id per slot_fixes.yaml.
+          Use Identifier with identifier_scheme='cadastral' for parcel IDs.
+          Netherlands: Kadaster perceelnummer format {gemeente}-{sectie}-{perceelnummer}
+        examples:
+        - value:
+            identifier_scheme: cadastral
+            identifier_value: ASD04-H-4567
+          description: Amsterdam cadastral parcel identifier
    comments:
    - Follows TOOI BestuurlijkeRuimte pattern using GeoSPARQL
    - 'CRITICAL: NOT a nominal reference - this is measured/surveyed location data'
--- a/schemas/20251121/linkml/modules/classes/InformationCarrier.yaml
+++ b/schemas/20251121/linkml/modules/classes/InformationCarrier.yaml
@ -23,8 +23,8 @@ imports:
 - ../slots/has_annotation_by
 - ../slots/has_archival_reference
 - ../slots/has_arrangement_level
- ../slots/binding_description
- ../slots/binding_provenance
+- ../slots/has_or_had_description
+- ../slots/has_or_had_provenance
 - ../slots/has_or_had_type
 - ../slots/bookplate
 - ./BindingType
@ -109,8 +109,8 @@ classes:
    - has_annotation_by
    - archival_reference
    - arrangement_level
-    - binding_description
-    - binding_provenance
+    - has_or_had_description
+    - has_or_had_provenance
    - has_or_had_type
    - bookplate
    - call_number
@ -220,9 +220,27 @@ classes:
      binding_description:
        required: false
        range: string
+        description: >-
+          DEPRECATED: Use has_or_had_description instead for binding descriptions.
+          MIGRATION: 2026-01-15 - Replaced by has_or_had_description slot per Rule 53.
+        deprecated: "Use has_or_had_description instead"
        examples:
        - value: "Contemporary blind-stamped pigskin over wooden boards, \nwith brass clasps and corner pieces. Spine with\
            \ five raised bands.\n"
+      has_or_had_description:
+        required: false
+        range: string
+        description: >-
+          Detailed description of the physical binding of this information carrier.
+          MIGRATED from binding_description (2026-01-15) per Rule 53.
+          
+          Describes binding style, materials, decorative elements, and condition.
+          For carriers like codices, bound manuscripts, and books.
+        examples:
+        - value: "Contemporary blind-stamped pigskin over wooden boards, with brass clasps and corner pieces. Spine with five raised bands."
+          description: Medieval manuscript binding
+        - value: "Rebound in the 18th century in red morocco with gold tooling."
+          description: Later rebinding of early printed book
      cover_material:
        required: false
        range: string
@ -338,11 +356,18 @@ classes:
        multivalued: true
        examples:
        - value: British Museum stamp on verso of title page
-      binding_provenance:
+      has_or_had_provenance:
        required: false
        range: string
+        description: >-
+          Provenance information related to the physical binding of this information carrier.
+          MIGRATED from binding_provenance (2026-01-15) per Rule 53.
+          
+          Describes the historical ownership or commissioning context of the binding,
+          such as royal presentation bindings or notable previous owners' bindings.
        examples:
        - value: Bound for presentation to Elizabeth I, royal arms in gold
+          description: Royal presentation binding provenance
      isbn:
        required: false
        range: string
@ -463,7 +488,7 @@ classes:
        - Paper (handmade, watermarked)
        folio_count: 641
        binding_type: 18th-century full leather
-        binding_description: 'Rebound in the 18th century in red morocco with gold tooling.
+        has_or_had_description: 'Rebound in the 18th century in red morocco with gold tooling.

          Five raised bands on spine with gilt lettering.

--- a/schemas/20251121/linkml/modules/classes/LinkedInProfile.yaml
+++ b/schemas/20251121/linkml/modules/classes/LinkedInProfile.yaml
@ -18,8 +18,8 @@ imports:
 - ./HeritageRelevance
 - ./LanguageProficiency
 - ../slots/has_or_had_about_text
- ../slots/is_or_was_real
- ./RealnessStatus
+- ../slots/has_or_had_provenance
+- ./ProvenanceBlock
 - ../slots/has_assessment_date
 - ../slots/connections_text
 - ../slots/data_source_whatsapp
@ -332,7 +332,7 @@ classes:

      '
    slots:
-    - is_or_was_real
+    - has_or_had_provenance
    - data_source_whatsapp
    - enriched_date
    - enrichment_method_whatsapp
@ -352,14 +352,16 @@ classes:
        - value: public_linkedin_profile
      no_fabrication:
        range: boolean
-      is_or_was_real:
-        range: RealnessStatus
+      has_or_had_provenance:
+        range: ProvenanceBlock
        inlined: true
        description: >-
-          Realness status of the enrichment data.
-          Indicates whether the enrichment data is real production data or test/synthetic.
+          Provenance information for the enrichment data.
+          Contains data source, extraction method, confidence score, and verification status.
        examples:
        - value:
-            status: REAL
-            description: "Verified production data from LinkedIn profile"
-          description: Real production enrichment data
+            data_source: "public_linkedin_profile"
+            extraction_date: "2025-01-14T12:00:00Z"
+            confidence_score: 0.95
+            note: "Verified production data from LinkedIn profile"
+          description: Real production enrichment data with provenance
--- a/schemas/20251121/linkml/modules/classes/Notes.yaml
+++ b/schemas/20251121/linkml/modules/classes/Notes.yaml
@ -0,0 +1,122 @@
+# Notes class
+# Generic class for typed notes with provenance
+#
+# Generation date: 2026-01-14
+# Rule compliance: 0 (LinkML single source of truth), 38 (slot centralization)
+# Migration: Supports has_or_had_notes slot (replaces appraisal_notes)
+
+id: https://nde.nl/ontology/hc/class/Notes
+name: notes_class
+title: Notes Class
+
+prefixes:
+  linkml: https://w3id.org/linkml/
+  hc: https://nde.nl/ontology/hc/
+  skos: http://www.w3.org/2004/02/skos/core#
+  rdfs: http://www.w3.org/2000/01/rdf-schema#
+  schema: http://schema.org/
+  dcterms: http://purl.org/dc/terms/
+
+default_prefix: hc
+
+imports:
+  - linkml:types
+  - ../metadata
+  - ../slots/note_type
+  - ../slots/note_content
+  - ../slots/note_date
+  - ../slots/language
+  - ../slots/specificity_annotation
+  - ../slots/template_specificity
+  - ./SpecificityAnnotation
+  - ./TemplateSpecificityScores
+
+classes:
+  Notes:
+    class_uri: skos:note
+    description: |
+      A typed note with optional provenance metadata.
+      
+      **Purpose**:
+      Notes provides a reusable class for representing documentation notes
+      across the heritage custodian schema. Supports typed notes (appraisal,
+      arrangement, conservation, etc.) with language tagging and dates.
+      
+      **Ontological Alignment**:
+      - **Primary**: `skos:note` - general note
+      - **Close**: `rdfs:comment` - comment on resource
+      
+      **Use Cases**:
+      - Appraisal notes documenting retention decisions
+      - Arrangement notes documenting physical organization
+      - Conservation notes documenting treatments
+      - Processing notes documenting archival workflow
+      - General documentation notes
+      
+      **Replaces**:
+      - `appraisal_notes` (string) - now typed with note_type
+      
+    exact_mappings:
+      - skos:note
+    
+    close_mappings:
+      - rdfs:comment
+      - dcterms:description
+    
+    slots:
+      - note_type
+      - note_content
+      - note_date
+      - language
+      - specificity_annotation
+      - template_specificity
+    
+    slot_usage:
+      note_type:
+        description: |
+          The type of note (appraisal, arrangement, conservation, processing, general).
+        range: string
+        required: false
+        examples:
+          - value: appraisal
+            description: Appraisal decision documentation
+          - value: arrangement
+            description: Physical organization notes
+          - value: conservation
+            description: Treatment documentation
+      note_content:
+        description: The textual content of the note.
+        range: string
+        required: true
+      note_date:
+        description: Date the note was created or last updated.
+        range: date
+        required: false
+      language:
+        description: |
+          ISO 639-1 two-letter language code for this note.
+          Examples: "en", "nl", "de", "fr"
+        range: string
+        required: false
+        pattern: "^[a-z]{2}$"
+    
+    annotations:
+      custodian_types: '["*"]'
+      custodian_types_rationale: Generic notes class applicable to all types.
+      custodian_types_primary: null
+      specificity_score: 0.3
+      specificity_rationale: Broadly applicable generic class for documentation notes.
+    
+    examples:
+      - value: |
+          note_type: appraisal
+          note_content: "Retained all policy files; destroyed duplicate copies and routine correspondence per retention schedule RS-2020-05"
+          note_date: "2024-03-15"
+          language: en
+        description: "Appraisal note documenting retention decisions"
+      - value: |
+          note_type: arrangement
+          note_content: "Maintained original order by correspondent. Created 5 series by function. Rehoused into acid-free folders and boxes."
+          note_date: "2024-06-01"
+          language: en
+        description: "Arrangement note documenting physical organization"
--- a/schemas/20251121/linkml/modules/classes/OrganizationBranch.yaml
+++ b/schemas/20251121/linkml/modules/classes/OrganizationBranch.yaml
@ -12,10 +12,10 @@ imports:
 - ./ReconstructedEntity
 - ./BranchType
 - ../slots/located_at
- ../slots/branch_description
+- ../slots/has_or_had_description
 - ../slots/branch_head
- ../slots/branch_id
- ../slots/branch_name
+- ../slots/has_or_had_identifier
+- ../slots/has_or_had_label
 - ../slots/has_or_had_type
 - ../slots/contact_point
 - ../slots/has_operational_unit
@ -68,8 +68,8 @@ classes:
      \ Satellite Galleries**:\n   - Main museum → Contemporary Art Wing (off-site)\n   - Separate building, curated exhibitions\n\
      \   \n4. **Conservation/Research Centers**:\n   - Main institution → Conservation Lab (different building)\n   - Specialized\
      \ facility with own staff\n\n**Example - National Archives Branch**:\n```yaml\nAuxiliaryPlace:\n  place_name: \"Regionaal\
-      \ Historisch Centrum Noord-Holland\"\n  auxiliary_place_type: BRANCH_OFFICE\n  hosts_branch:\n    - branch_id: \"https://nde.nl/ontology/hc/branch/na-rhc-noord-holland\"\
-      \n      branch_name: \"RHC Noord-Holland\"\n      branch_type: REGIONAL_OFFICE\n      has_operational_unit:\n      \
+      \ Historisch Centrum Noord-Holland\"\n  auxiliary_place_type: BRANCH_OFFICE\n  hosts_branch:\n    - has_or_had_identifier: \"https://nde.nl/ontology/hc/branch/na-rhc-noord-holland\"\
+      \n      has_or_had_label: \"RHC Noord-Holland\"\n      branch_type: REGIONAL_OFFICE\n      has_operational_unit:\n      \
      \  - unit_name: \"Reading Room Services\"\n        - unit_name: \"Digitization Team\"\n      is_branch_of: \"https://nde.nl/ontology/hc/nl-na\"\
      \n```\n\n**DISTINCTION FROM schema:branchOf**:\n\nSchema.org `branchOf` links commercial branches (e.g., bank branches).\n\
      `org:unitOf` is more appropriate for heritage institutions as it:\n- Models public sector organizational hierarchies\n\
@ -84,10 +84,10 @@ classes:
    - schema:branchOf
    - schema:department
    slots:
-    - branch_description
+    - has_or_had_description
    - branch_head
-    - branch_id
-    - branch_name
+    - has_or_had_identifier
+    - has_or_had_label
    - has_or_had_type
    - contact_point
    - has_operational_unit
@ -104,16 +104,24 @@ classes:
    - was_derived_from
    - was_generated_by
    slot_usage:
-      branch_id:
+      has_or_had_identifier:
        range: uriorcurie
        required: true
        identifier: true
+        description: >-
+          Unique identifier for this organizational branch.
+          MIGRATED from branch_id (2026-01-14) per Rule 53.
        examples:
        - value: https://nde.nl/ontology/hc/branch/rm-schiphol-exhibition
          description: Rijksmuseum Schiphol exhibition branch
-      branch_name:
+      has_or_had_label:
        range: string
        required: true
+        multivalued: false
+        description: >-
+          Official name of this organizational branch.
+          MIGRATED from branch_name (2026-01-15) per Rule 53.
+          This is the formal name of the branch as used in official documents.
        examples:
        - value: Rijksmuseum Schiphol
          description: Airport branch name
@ -148,9 +156,26 @@ classes:
          description: Conservation facility type
      branch_description:
        range: string
+        description: >-
+          DEPRECATED: Use has_or_had_description instead.
+          MIGRATION: 2026-01-15 - Replaced by has_or_had_description slot per Rule 53.
+        deprecated: "Use has_or_had_description instead"
        examples:
        - value: Small exhibition space at Schiphol Airport featuring rotating highlights from the Rijksmuseum collection.
          description: Branch purpose description
+      has_or_had_description:
+        range: string
+        description: >-
+          Narrative description of the branch's purpose, role, and activities.
+          MIGRATED from branch_description (2026-01-15) per Rule 53.
+          
+          Describes what this branch does, its scope of operations,
+          and its relationship to the parent organization.
+        examples:
+        - value: Small exhibition space at Schiphol Airport featuring rotating highlights from the Rijksmuseum collection.
+          description: Exhibition branch description
+        - value: Off-site collection storage facility managing overflow objects and art storage.
+          description: Storage operations branch
      located_at:
        range: AuxiliaryPlace
        multivalued: true
@ -179,7 +204,7 @@ classes:
        inlined_as_list: true
        examples:
        - value:
-            branch_name: Schiphol Terminal 2 Kiosk
+            has_or_had_label: Schiphol Terminal 2 Kiosk
          description: Sub-branch of Schiphol exhibition
      branch_head:
        range: string
@ -241,10 +266,10 @@ classes:
    - https://www.w3.org/TR/vcard-rdf/
    examples:
    - value:
-        branch_id: https://nde.nl/ontology/hc/branch/rm-schiphol
-        branch_name: Rijksmuseum Schiphol
+        has_or_had_identifier: https://nde.nl/ontology/hc/branch/rm-schiphol
+        has_or_had_label: Rijksmuseum Schiphol
        branch_type: EXHIBITION_SPACE
-        branch_description: Small exhibition space at Schiphol Airport featuring rotating highlights from the collection.
+        has_or_had_description: Small exhibition space at Schiphol Airport featuring rotating highlights from the collection.
        located_at:
        - https://nde.nl/ontology/hc/aux-place/rijksmuseum-schiphol
        has_operational_unit:
@ -258,10 +283,10 @@ classes:
        refers_to_custodian: https://nde.nl/ontology/hc/nl-nh-ams-m-rm-q190804
      description: Rijksmuseum Schiphol exhibition branch
    - value:
-        branch_id: https://nde.nl/ontology/hc/branch/rm-depot-operations
-        branch_name: Collection Storage Operations - Amersfoort
+        has_or_had_identifier: https://nde.nl/ontology/hc/branch/rm-depot-operations
+        has_or_had_label: Collection Storage Operations - Amersfoort
        branch_type: STORAGE_MANAGEMENT
-        branch_description: Off-site collection storage facility managing overflow objects and art storage.
+        has_or_had_description: Off-site collection storage facility managing overflow objects and art storage.
        located_at:
        - https://nde.nl/ontology/hc/aux-place/rijksmuseum-depot-amersfoort
        has_operational_unit:
@ -275,10 +300,10 @@ classes:
        refers_to_custodian: https://nde.nl/ontology/hc/nl-nh-ams-m-rm-q190804
      description: Rijksmuseum off-site storage operations branch
    - value:
-        branch_id: https://nde.nl/ontology/hc/branch/na-rhc-nh
-        branch_name: Regionaal Historisch Centrum Noord-Holland
+        has_or_had_identifier: https://nde.nl/ontology/hc/branch/na-rhc-nh
+        has_or_had_label: Regionaal Historisch Centrum Noord-Holland
        branch_type: REGIONAL_OFFICE
-        branch_description: Regional archives center serving Noord-Holland province, providing reading room services and archival
+        has_or_had_description: Regional archives center serving Noord-Holland province, providing reading room services and archival
          research support.
        is_branch_of: https://nde.nl/ontology/hc/nl-na
        staff_count: 25
--- a/schemas/20251121/linkml/modules/classes/RequirementStatus.yaml
+++ b/schemas/20251121/linkml/modules/classes/RequirementStatus.yaml
@ -0,0 +1,207 @@
+# RequirementStatus - Status class for structured requirement information
+#
+# Following the BackupStatus pattern:
+# This is a STATUS class that represents the current state of a requirement,
+# with structured type classification via RequirementType.
+#
+# Generation date: 2026-01-15 (created for booking_required migration)
+# Rule compliance: 37 (specificity scores), 38 (slot centralization), 39 (RiC-O naming)
+#
+# ONTOLOGY ALIGNMENT: PROV-O prov:Entity for status with provenance
+
+id: https://nde.nl/ontology/hc/class/RequirementStatus
+name: requirement_status_class
+title: Requirement Status Class
+
+prefixes:
+  linkml: https://w3id.org/linkml/
+  hc: https://nde.nl/ontology/hc/
+  prov: http://www.w3.org/ns/prov#
+  skos: http://www.w3.org/2004/02/skos/core#
+  schema: http://schema.org/
+
+default_prefix: hc
+
+imports:
+  - linkml:types
+  # Shared slots (centralized)
+  - ../slots/has_or_had_identifier
+  - ../slots/has_or_had_type
+  - ../slots/has_or_had_label
+  - ../slots/has_or_had_description
+  - ../slots/has_or_had_note
+  - ../slots/is_or_was_required
+  - ../slots/begin_of_the_begin
+  - ../slots/end_of_the_end
+  # Import the RequirementType for type references
+  - ./RequirementType
+
+classes:
+  RequirementStatus:
+    class_uri: prov:Entity
+    description: |
+      Represents the status of a requirement (e.g., booking, registration, appointment).
+      
+      **DEFINITION**:
+      
+      RequirementStatus captures structured requirement information including:
+      - Whether the requirement is active (is_or_was_required boolean)
+      - The type(s) of requirement (via has_or_had_type → RequirementType)
+      - Status description (free text details)
+      - Temporal validity (when this requirement was in effect)
+      
+      **ONTOLOGY ALIGNMENT**:
+      
+      | Ontology | Class/Property | Notes |
+      |----------|----------------|-------|
+      | **PROV-O** | `prov:Entity` | Primary - entity with provenance |
+      | **Schema.org** | `schema:isRequired` | Boolean requirement |
+      | **SKOS** | `skos:Concept` | For type classification |
+      
+      **RELATIONSHIP TO OTHER CLASSES**:
+      
+      ```
+      EducationCenter / ReadingRoom / etc.
+        │
+        └── has_or_had_status → RequirementStatus (THIS CLASS)
+              │
+              ├── is_or_was_required (boolean - is booking required?)
+              ├── has_or_had_type → RequirementType (what kind of requirement)
+              ├── has_or_had_description (free text details)
+              └── begin_of_the_begin / end_of_the_end (validity period)
+      ```
+      
+      **SLOT MIGRATION** (2026-01-15):
+      
+      This class replaces domain-specific boolean slots:
+      - booking_required (boolean) → has_or_had_status: RequirementStatus
+      - appointment_required (boolean) → has_or_had_status: RequirementStatus
+      - registration_required (boolean) → has_or_had_status: RequirementStatus
+      
+      **SIMPLE VS STRUCTURED USAGE**:
+      
+      For simple boolean requirement (just true/false):
+      ```yaml
+      is_or_was_required: true
+      ```
+      
+      For structured requirement with details:
+      ```yaml
+      has_or_had_status:
+        is_or_was_required: true
+        has_or_had_type:
+          - has_or_had_short_code: ADVANCE_BOOKING
+        has_or_had_description: "Advance booking required for groups of 10+"
+      ```
+      
+    exact_mappings:
+      - prov:Entity
+    
+    close_mappings:
+      - schema:Action
+    
+    slots:
+      - has_or_had_identifier
+      - is_or_was_required
+      - has_or_had_type
+      - has_or_had_label
+      - has_or_had_description
+      - has_or_had_note
+      - begin_of_the_begin
+      - end_of_the_end
+    
+    slot_usage:
+      has_or_had_identifier:
+        range: uriorcurie
+        identifier: true
+        pattern: "^https://nde\\.nl/ontology/hc/requirement-status/[a-z0-9-]+$"
+      
+      is_or_was_required:
+        range: boolean
+        required: true
+        description: "Whether this requirement is active/mandatory."
+        examples:
+          - value: true
+            description: Booking is required
+          - value: false
+            description: Booking is optional (walk-ins welcome)
+      
+      has_or_had_type:
+        range: RequirementType
+        multivalued: true
+        inlined_as_list: true
+        description: "The type(s) of requirement (advance booking, group booking, etc.)."
+        examples:
+          - value:
+              - has_or_had_short_code: ADVANCE_BOOKING
+            description: Advance booking required
+      
+      has_or_had_description:
+        range: string
+        description: "Free text description of the requirement details."
+        examples:
+          - value: "Advance booking required for groups of 10 or more. Individual visitors welcome without booking."
+      
+      has_or_had_note:
+        range: string
+        multivalued: true
+        description: "Additional notes about the requirement."
+        examples:
+          - value: "Online booking available at www.museum.nl/book"
+          - value: "Phone bookings: +31 20 123 4567"
+      
+      begin_of_the_begin:
+        range: datetime
+        description: "When this requirement came into effect."
+      
+      end_of_the_end:
+        range: datetime
+        description: "When this requirement ended (if no longer in effect)."
+    
+    annotations:
+      specificity_score: "0.55"
+      specificity_rationale: "Requirement status applicable to many heritage contexts (education, reading rooms, visits)."
+      template_specificity: '{"collection_discovery": 0.60, "location_browse": 0.75, "general_heritage": 0.50}'
+      slot_migration: |
+        2026-01-15: Created to replace domain-specific requirement boolean slots
+        - booking_required (boolean) → has_or_had_status (RequirementStatus)
+        - appointment_required (boolean) → has_or_had_status (RequirementStatus)
+    
+    comments:
+      - "RequirementStatus represents structured requirement information"
+      - "Linked to RequirementType for type classification"
+      - "Supports temporal validity tracking"
+      - "CREATED 2026-01-15: Enables migration from domain-specific boolean slots"
+    
+    examples:
+      - value:
+          has_or_had_identifier: https://nde.nl/ontology/hc/requirement-status/rijksmuseum-edu-booking
+          is_or_was_required: true
+          has_or_had_type:
+            - has_or_had_short_code: ADVANCE_BOOKING
+          has_or_had_label:
+            - Booking required for education programs@en
+            - Reservering verplicht voor educatieprogramma's@nl
+          has_or_had_description: |
+            Advance booking required for all school groups and educational programs.
+            Minimum 2 weeks advance booking for groups of 20+.
+          has_or_had_note:
+            - "Online booking: educatie@rijksmuseum.nl"
+          begin_of_the_begin: "2020-01-01T00:00:00Z"
+        description: Example booking requirement for museum education center
+      
+      - value:
+          has_or_had_identifier: https://nde.nl/ontology/hc/requirement-status/archive-reading-room
+          is_or_was_required: true
+          has_or_had_type:
+            - has_or_had_short_code: APPOINTMENT_REQUIRED
+          has_or_had_description: |
+            Appointment required for reading room access. 
+            Walk-in visits not possible due to limited seating.
+        description: Appointment requirement for archive reading room
+      
+      - value:
+          has_or_had_identifier: https://nde.nl/ontology/hc/requirement-status/library-open-access
+          is_or_was_required: false
+          has_or_had_description: "No booking required. Open access during public hours."
+        description: No requirement (open access)
--- a/schemas/20251121/linkml/modules/classes/archive/RealnessStatus_archived_20260114.yaml
+++ b/schemas/20251121/linkml/modules/classes/archive/RealnessStatus_archived_20260114.yaml
--- a/schemas/20251121/linkml/modules/slots/archive/activities_societies_archived_20260114.yaml
+++ b/schemas/20251121/linkml/modules/slots/archive/activities_societies_archived_20260114.yaml
--- a/schemas/20251121/linkml/modules/slots/archive/actual_end_archived_20260114.yaml
+++ b/schemas/20251121/linkml/modules/slots/archive/actual_end_archived_20260114.yaml
--- a/schemas/20251121/linkml/modules/slots/archive/actual_start_archived_20260114.yaml
+++ b/schemas/20251121/linkml/modules/slots/archive/actual_start_archived_20260114.yaml
--- a/schemas/20251121/linkml/modules/slots/archive/address_formatted_archived_20260114.yaml
+++ b/schemas/20251121/linkml/modules/slots/archive/address_formatted_archived_20260114.yaml
--- a/schemas/20251121/linkml/modules/slots/archive/address_type_archived_20260114.yaml
+++ b/schemas/20251121/linkml/modules/slots/archive/address_type_archived_20260114.yaml
--- a/schemas/20251121/linkml/modules/slots/archive/admin_office_id_archived_20260114.yaml
+++ b/schemas/20251121/linkml/modules/slots/archive/admin_office_id_archived_20260114.yaml
--- a/schemas/20251121/linkml/modules/slots/archive/administrative_functions_archived_20260114.yaml
+++ b/schemas/20251121/linkml/modules/slots/archive/administrative_functions_archived_20260114.yaml
--- a/schemas/20251121/linkml/modules/slots/archive/aggregates_from_archived_20260114.yaml
+++ b/schemas/20251121/linkml/modules/slots/archive/aggregates_from_archived_20260114.yaml
--- a/schemas/20251121/linkml/modules/slots/archive/applicable_countries_archived_20260115.yaml
+++ b/schemas/20251121/linkml/modules/slots/archive/applicable_countries_archived_20260115.yaml
--- a/schemas/20251121/linkml/modules/slots/archive/appointment_required_archived_20260115.yaml
+++ b/schemas/20251121/linkml/modules/slots/archive/appointment_required_archived_20260115.yaml
--- a/schemas/20251121/linkml/modules/slots/archive/appraisal_notes_archived_20260114.yaml
+++ b/schemas/20251121/linkml/modules/slots/archive/appraisal_notes_archived_20260114.yaml
--- a/schemas/20251121/linkml/modules/slots/archive/backup_status_archived_20260115.yaml
+++ b/schemas/20251121/linkml/modules/slots/archive/backup_status_archived_20260115.yaml
--- a/schemas/20251121/linkml/modules/slots/archive/bibframe_equivalent_archived_20260115.yaml
+++ b/schemas/20251121/linkml/modules/slots/archive/bibframe_equivalent_archived_20260115.yaml
--- a/schemas/20251121/linkml/modules/slots/archive/binding_archived_20260115.yaml
+++ b/schemas/20251121/linkml/modules/slots/archive/binding_archived_20260115.yaml
--- a/schemas/20251121/linkml/modules/slots/archive/binding_description_archived_20260115.yaml
+++ b/schemas/20251121/linkml/modules/slots/archive/binding_description_archived_20260115.yaml
--- a/schemas/20251121/linkml/modules/slots/archive/binding_provenance_archived_20260115.yaml
+++ b/schemas/20251121/linkml/modules/slots/archive/binding_provenance_archived_20260115.yaml
--- a/schemas/20251121/linkml/modules/slots/archive/binding_type_archived_20260114.yaml
+++ b/schemas/20251121/linkml/modules/slots/archive/binding_type_archived_20260114.yaml
--- a/schemas/20251121/linkml/modules/slots/archive/booking_required_archived_20260115.yaml
+++ b/schemas/20251121/linkml/modules/slots/archive/booking_required_archived_20260115.yaml
--- a/schemas/20251121/linkml/modules/slots/archive/branch_description_archived_20260115.yaml
+++ b/schemas/20251121/linkml/modules/slots/archive/branch_description_archived_20260115.yaml
--- a/schemas/20251121/linkml/modules/slots/archive/branch_id_archived_20260114.yaml
+++ b/schemas/20251121/linkml/modules/slots/archive/branch_id_archived_20260114.yaml
--- a/schemas/20251121/linkml/modules/slots/archive/branch_name_archived_20260115.yaml
+++ b/schemas/20251121/linkml/modules/slots/archive/branch_name_archived_20260115.yaml
--- a/schemas/20251121/linkml/modules/slots/archive/branch_office_description_archived_20260115.yaml
+++ b/schemas/20251121/linkml/modules/slots/archive/branch_office_description_archived_20260115.yaml
--- a/schemas/20251121/linkml/modules/slots/archive/branch_office_id_archived_20260114.yaml
+++ b/schemas/20251121/linkml/modules/slots/archive/branch_office_id_archived_20260114.yaml
--- a/schemas/20251121/linkml/modules/slots/archive/branch_office_name_archived_20260114.yaml
+++ b/schemas/20251121/linkml/modules/slots/archive/branch_office_name_archived_20260114.yaml
--- a/schemas/20251121/linkml/modules/slots/archive/branch_type_archived_20260114.yaml
+++ b/schemas/20251121/linkml/modules/slots/archive/branch_type_archived_20260114.yaml
--- a/schemas/20251121/linkml/modules/slots/archive/broader_concept_label_archived_20260115.yaml
+++ b/schemas/20251121/linkml/modules/slots/archive/broader_concept_label_archived_20260115.yaml
--- a/schemas/20251121/linkml/modules/slots/archive/budget_archived_20260115.yaml
+++ b/schemas/20251121/linkml/modules/slots/archive/budget_archived_20260115.yaml
--- a/schemas/20251121/linkml/modules/slots/archive/budget_description_archived_20260115.yaml
+++ b/schemas/20251121/linkml/modules/slots/archive/budget_description_archived_20260115.yaml
--- a/schemas/20251121/linkml/modules/slots/archive/budget_name_archived_20260115.yaml
+++ b/schemas/20251121/linkml/modules/slots/archive/budget_name_archived_20260115.yaml
--- a/schemas/20251121/linkml/modules/slots/archive/budget_type_archived_20260114.yaml
+++ b/schemas/20251121/linkml/modules/slots/archive/budget_type_archived_20260114.yaml
--- a/schemas/20251121/linkml/modules/slots/archive/cadastral_id_archived_20260114.yaml
+++ b/schemas/20251121/linkml/modules/slots/archive/cadastral_id_archived_20260114.yaml
--- a/schemas/20251121/linkml/modules/slots/archive/has_actual_end_date_archived_20260114.yaml
+++ b/schemas/20251121/linkml/modules/slots/archive/has_actual_end_date_archived_20260114.yaml
--- a/schemas/20251121/linkml/modules/slots/archive/has_actual_start_date_archived_20260114.yaml
+++ b/schemas/20251121/linkml/modules/slots/archive/has_actual_start_date_archived_20260114.yaml
--- a/Show more
+++ b/Show more