diff --git a/frontend/src/views/settings/PCTypeMappingSettings.vue b/frontend/src/views/settings/PCTypeMappingSettings.vue
index e732aa6..457a3e7 100644
--- a/frontend/src/views/settings/PCTypeMappingSettings.vue
+++ b/frontend/src/views/settings/PCTypeMappingSettings.vue
@@ -1,58 +1,30 @@
 <template>
   <div>
     <div class="page-header">
-      <h2>Collector PC Types</h2>
+      <h2>Collector PC Types (retired)</h2>
     </div>
 
     <div class="section-card">
       <div class="setting-group">
         <p class="setting-description">
-          When the collector ingests a PC, its imaging pc-type (from
-          C:\Enrollment\pc-type.txt) is mapped to one of your Computer Types.
-          Adjust the mapping per site.
+          This page has been retired. Imaging pc-type handling now lives in
+          GE-Enforce, where each imaging PC type is a manifest scope with its own
+          Computer Type. Manage it from the GE-Enforce section instead.
         </p>
-
-        <div class="table-container" v-if="pcTypeMappings.length">
-          <table class="identifier-matrix">
-            <thead>
-              <tr><th>Imaging pc-type</th><th>Computer Type</th></tr>
-            </thead>
-            <tbody>
-              <tr v-for="row in pcTypeMappings" :key="row.pxetype">
-                <td class="identifier-name">{{ row.pxetype }}</td>
-                <td>
-                  <select
-                    :value="row.computertype"
-                    @change="changePcTypeMapping(row.pxetype, $event.target.value)"
-                    :disabled="saving"
-                  >
-                    <option v-for="ct in computerTypes" :key="ct" :value="ct">{{ ct }}</option>
-                  </select>
-                </td>
-              </tr>
-            </tbody>
-          </table>
-        </div>
-        <p v-else class="setting-description">No collector pc-type mappings are configured yet.</p>
+        <p class="setting-description">
+          The collector still applies the built-in pc-type to Computer Type
+          defaults, so existing enrollment keeps working; there is nothing to
+          configure here anymore.
+        </p>
+        <RouterLink class="btn" to="/geenforce/manifests">Open GE-Enforce</RouterLink>
       </div>
     </div>
-
-    <div v-if="error" class="error-message">{{ error }}</div>
-    <div v-if="success" class="settings-success">{{ success }}</div>
   </div>
 </template>
 
 <script setup>
-import { onMounted } from 'vue'
-import { useSystemSettings } from '../../composables/systemSettings'
-
-const {
-  saving, error, success, pcTypeMappings, computerTypes,
-  loadSettings, loadComputerTypes, changePcTypeMapping,
-} = useSystemSettings()
-
-onMounted(() => {
-  loadSettings()
-  loadComputerTypes()
-})
+// Deprecated page. Kept only so the /settings/pctypemapping route and old
+// bookmarks still resolve; GE-Enforce (scope computertypeid) supersedes the old
+// collector pc-type mapping UI. See ADR-012.
+import { RouterLink } from 'vue-router'
 </script>
diff --git a/frontend/src/views/settings/settingsNav.js b/frontend/src/views/settings/settingsNav.js
index 3031d11..ea84560 100644
--- a/frontend/src/views/settings/settingsNav.js
+++ b/frontend/src/views/settings/settingsNav.js
@@ -92,7 +92,6 @@ export const settingsGroups = [
       { to: '/settings/servicenow', icon: Link, title: 'ServiceNow', description: 'ServiceNow ticket links (incident, change) prefixes and global-search redirect' },
       { to: '/settings/zabbix', icon: Droplets, title: 'Zabbix Supplies', description: 'Zabbix API for real-time printer toner and supply monitoring' },
       { to: '/settings/dellwarranty', icon: ShieldCheck, title: 'Dell Warranty', description: 'Dell TechDirect warranty API lookup by service tag' },
-      { to: '/settings/pctypemapping', icon: Laptop, title: 'Collector PC Types', description: 'Map collector enrollment imaging pc-type (shopfloor) to a Computer Type' },
     ],
   },
   {
diff --git a/plugins/computers/pctypemap.py b/plugins/computers/pctypemap.py
index f6360b5..320c3dc 100644
--- a/plugins/computers/pctypemap.py
+++ b/plugins/computers/pctypemap.py
@@ -23,6 +23,9 @@ DEFAULT_PCTYPE_MAP = {
     'gea-shopfloor-partmarker': 'Shopfloor PC',
 }
 
+# DEPRECATED settings surface: the "Collector PC Types" settings page is retired
+# (GE-Enforce scope computertypeid supersedes it, ADR-012). Collector still reads
+# this map, so keep the code; only the editor UI card is gone.
 _SETTING_PREFIX = 'pctypemap_'
 _SETTING_CATEGORY = 'pctypemapping'
 
diff --git a/tests/test_plugins/test_geenforce_ddl_parity.py b/tests/test_plugins/test_geenforce_ddl_parity.py
new file mode 100644
index 0000000..47cd51b
--- /dev/null
+++ b/tests/test_plugins/test_geenforce_ddl_parity.py
@@ -0,0 +1,134 @@
+"""GE-Enforce DDL parity gate: models match the hand-written Alembic baseline.
+
+The geenforce baseline (0001_geenforce_baseline.py) actually CREATES the plugin
+tables (ADR-008 per-plugin chain), and it is hand-written - the models and the
+migration can drift silently (a column added to a model but not the migration
+ships a schema that upgrade() never builds, and vice versa). This guard builds
+the schema two ways and diffs them column-by-column:
+
+  1. the SQLAlchemy models via metadata.create_all (desired shape), and
+  2. the migration's upgrade() run against a fresh engine (shipped shape).
+
+Both go through the same SQLite dialect, so the reflected column types render
+identically and the comparison stays low-flake. A drift (missing column, changed
+type, changed nullability) fails here instead of on a real deploy insert.
+"""
+
+import importlib.util
+from pathlib import Path
+
+from sqlalchemy import create_engine, inspect
+from alembic.migration import MigrationContext
+from alembic.operations import Operations
+
+
+_BASELINE = (Path(__file__).resolve().parent.parent.parent / 'plugins' /
+             'geenforce' / 'migrations' / 'versions' /
+             '0001_geenforce_baseline.py')
+
+
+def _geenforce_models():
+    from plugins.geenforce.models import manifest
+    return [
+        manifest.ManifestScope,
+        manifest.ManifestEntry,
+        manifest.ManifestEntryPcType,
+        manifest.ManifestEntryHostname,
+        manifest.ManifestEntryMachineNumber,
+        manifest.ManifestInUseCheck,
+        manifest.ManifestInUseCheckProcess,
+        manifest.ManifestPublishedVersion,
+        manifest.ManifestPayload,
+        manifest.ManifestEnforcementReport,
+        manifest.ManifestEnforcementResult,
+        manifest.PcTypeAlias,
+    ]
+
+
+def _model_schema(db, models):
+    """Build the geenforce tables from the models; return an inspector."""
+    engine = create_engine('sqlite://')
+    db.metadata.create_all(engine, tables=[model.__table__ for model in models])
+    return inspect(engine)
+
+
+def _migration_schema():
+    """Run the baseline migration's upgrade() on a fresh engine; return columns.
+
+    Returns {tablename: {columnname: reflected-column-dict}}. Reflection happens
+    while the connection is open, so we materialize the dicts before it closes.
+    """
+    spec = importlib.util.spec_from_file_location('geenforce_baseline',
+                                                  str(_BASELINE))
+    migration = importlib.util.module_from_spec(spec)
+    spec.loader.exec_module(migration)
+
+    engine = create_engine('sqlite://')
+    schema = {}
+    with engine.connect() as connection:
+        operations = Operations(MigrationContext.configure(connection))
+        operations._install_proxy()
+        try:
+            migration.upgrade()
+        finally:
+            operations._remove_proxy()
+        connection.commit()
+        inspector = inspect(connection)
+        for table in inspector.get_table_names():
+            schema[table] = {column['name']: column
+                             for column in inspector.get_columns(table)}
+    return schema
+
+
+def _colkey(column):
+    """Normalize a reflected column to the facets we gate on."""
+    return (str(column['type']), bool(column['nullable']))
+
+
+def test_models_match_migration_baseline(app, db):
+    """Every geenforce model table+column matches what the migration builds."""
+    with app.app_context():
+        models = _geenforce_models()
+        model_inspector = _model_schema(db, models)
+        migration_schema = _migration_schema()
+
+        drift = []
+        for model in models:
+            table = model.__tablename__
+            if table not in migration_schema:
+                drift.append(f'{table}: table missing from migration')
+                continue
+            modelcols = {column['name']: column
+                         for column in model_inspector.get_columns(table)}
+            migrationcols = migration_schema[table]
+
+            missing = set(modelcols) - set(migrationcols)
+            extra = set(migrationcols) - set(modelcols)
+            for name in sorted(missing):
+                drift.append(f'{table}.{name}: in model, not in migration')
+            for name in sorted(extra):
+                drift.append(f'{table}.{name}: in migration, not in model')
+            for name in sorted(set(modelcols) & set(migrationcols)):
+                if _colkey(modelcols[name]) != _colkey(migrationcols[name]):
+                    drift.append(
+                        f'{table}.{name}: model {_colkey(modelcols[name])} != '
+                        f'migration {_colkey(migrationcols[name])}')
+
+        assert not drift, 'model/migration DDL drift:\n' + '\n'.join(drift)
+
+
+def test_curated_and_payload_columns_present_both_sides(app, db):
+    """Spot-guard the two real-work columns: manifestentries.appid and
+    manifestpayloads.payloadsha256 exist in BOTH the models and the migration
+    (they were added for the app-link + inline-payload features)."""
+    with app.app_context():
+        models = _geenforce_models()
+        model_inspector = _model_schema(db, models)
+        migration_schema = _migration_schema()
+
+        for table, column in (('manifestentries', 'appid'),
+                              ('manifestpayloads', 'payloadsha256')):
+            modelcols = {c['name'] for c in model_inspector.get_columns(table)}
+            assert column in modelcols, f'{table}.{column} missing from models'
+            assert column in migration_schema[table], \
+                f'{table}.{column} missing from migration'