Wire measuring tools into identifiers and global search

The measuringtools plugin was missing from two cross-cutting surfaces:
the asset-identifier matrix (no measuring_tool column or per-type
keys - gauge lab reference is their primary identifier) and global
search (results fell to a generic URL and gaugelabreference was never
searched). Measuring tools now have identifier toggles, gated
gauge-lab and maintenance-reference fields on their form and detail,
a search domain toggle, gage-tag search, and proper labels, routes,
and filter chips in search results.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

tests/test_plugins/test_measuringtools.py

@@ -240,6 +240,74 @@ def test_list_filter_by_calibrationstatus(client, auth_headers):
     assert all(r['measuringtool']['calibrationstatus'] == 'overdue' for r in rows)
 
 
+# -- Maintenance reference identifier -----------------------------------------
+
+def test_maintenancereference_roundtrip(client, auth_headers):
+    """Maintenance reference persists on create and update."""
+    created = client.post('/api/measuringtools', headers=auth_headers, json={
+        'assetnumber': 'MT-MNT-1', 'statusid': _status_id(client),
+        'maintenancereference': 'MNT-9',
+    })
+    assert created.status_code == 201, created.get_json()
+    assert created.get_json()['data']['maintenancereference'] == 'MNT-9'
+    tool_id = created.get_json()['data']['measuringtool']['measuringtoolid']
+
+    updated = client.put(f'/api/measuringtools/{tool_id}', headers=auth_headers,
+                         json={'maintenancereference': 'MNT-10'})
+    assert updated.status_code == 200
+    assert updated.get_json()['data']['maintenancereference'] == 'MNT-10'
+
+
+# -- Global search ------------------------------------------------------------
+
+def _mt_search_hits(client, auth_headers, term):
+    resp = client.get(f'/api/search?q={term}', headers=auth_headers)
+    assert resp.status_code == 200, resp.get_json()
+    return [r for r in resp.get_json()['data']['results']
+            if r.get('type') == 'measuring_tool']
+
+
+def test_search_finds_tool_by_assetnumber(mt_app, client, auth_headers, monkeypatch):
+    """A measuring tool appears in global search by asset number, routed right."""
+    client.post('/api/measuringtools', headers=auth_headers, json={
+        'assetnumber': 'MT-SEARCH-AN', 'statusid': _status_id(client)})
+    pm = mt_app.extensions['plugin_manager']
+    monkeypatch.setattr(pm.registry, 'is_enabled', lambda name: True)
+    hits = _mt_search_hits(client, auth_headers, 'MT-SEARCH-AN')
+    assert hits
+    assert hits[0]['url'].startswith('/measuringtools/')
+
+
+def test_search_finds_tool_by_gaugelabreference(mt_app, client, auth_headers, monkeypatch):
+    """A gage-tag lookup by gaugelabreference finds the tool."""
+    client.post('/api/measuringtools', headers=auth_headers, json={
+        'assetnumber': 'MT-SEARCH-GL', 'statusid': _status_id(client),
+        'gaugelabreference': 'GLREF-778'})
+    pm = mt_app.extensions['plugin_manager']
+    monkeypatch.setattr(pm.registry, 'is_enabled', lambda name: True)
+    hits = _mt_search_hits(client, auth_headers, 'GLREF-778')
+    assert hits
+    assert hits[0]['url'].startswith('/measuringtools/')
+
+
+def test_search_excludes_tools_when_domain_disabled(mt_app, client, auth_headers, monkeypatch):
+    """search_measuring_tool_enabled=false hides measuring tools from search."""
+    from shopdb.core.models import Setting
+    client.post('/api/measuringtools', headers=auth_headers, json={
+        'assetnumber': 'MT-SEARCH-OFF', 'statusid': _status_id(client),
+        'gaugelabreference': 'GLREF-OFF-1'})
+    pm = mt_app.extensions['plugin_manager']
+    monkeypatch.setattr(pm.registry, 'is_enabled', lambda name: True)
+    Setting.set('search_measuring_tool_enabled', False, valuetype='boolean',
+                category='search')
+    try:
+        assert _mt_search_hits(client, auth_headers, 'MT-SEARCH-OFF') == []
+        assert _mt_search_hits(client, auth_headers, 'GLREF-OFF-1') == []
+    finally:
+        Setting.set('search_measuring_tool_enabled', True, valuetype='boolean',
+                    category='search')
+
+
 # -- Report shape -------------------------------------------------------------
 
 def test_calibration_report_shape(client, auth_headers):