Resolve Fleet list route without a trailing slash

The Fleet list is the only endpoints route on the bare blueprint prefix, so it registered as /api/endpoints/ while the SPA calls /api/endpoints. With strict_slashes on, Flask 308-redirects to add the slash; behind the /shopdb reverse proxy (IIS ARR) that redirect Location drops the path prefix, so the list call fails while suffix routes like /api/endpoints/<id> keep working. That is why a healthy, reporting endpoint showed on its PC detail page but never in Fleet. strict_slashes=False makes both URL forms resolve directly and removes the fragile redirect.

plugins/endpoints/tests/test_plugin.py

@@ -169,3 +169,25 @@ def test_telemetrymeta_route_is_registered_for_freshness_gating():
     application.register_blueprint(EndpointsPlugin().get_blueprint())
     rules = {rule.rule for rule in application.url_map.iter_rules()}
     assert any(rule.endswith('/asset/<int:asset_id>/telemetrymeta') for rule in rules)
+
+
+def test_fleet_list_route_resolves_without_trailing_slash():
+    """The Fleet list route must match the slash-less URL the SPA calls.
+
+    The list is the only route on the bare blueprint prefix. If it demands a
+    trailing slash, Flask 308-redirects /api/endpoints to /api/endpoints/, and
+    behind the /shopdb reverse proxy that redirect drops the path prefix and
+    the list call fails while the detail routes (which carry a path suffix)
+    keep working. strict_slashes=False makes both forms resolve directly.
+    """
+    from flask import Flask
+
+    application = Flask(__name__)
+    application.register_blueprint(
+        EndpointsPlugin().get_blueprint(), url_prefix='/api/endpoints')
+    adapter = application.url_map.bind('localhost')
+
+    endpoint, _ = adapter.match('/api/endpoints', method='GET')
+    assert endpoint.endswith('list_endpoints')
+    endpoint_slash, _ = adapter.match('/api/endpoints/', method='GET')
+    assert endpoint_slash.endswith('list_endpoints')