A mode that does not work stops being on the menu

The control-mode picker offered all five paths to everyone, always. When one of
them is broken in a deployment — OCPP is, right now — there was nothing to do
about it: the superadmin could pick a different mode for the global layer, but
the option stayed in every organization's and every user's dropdown, waiting to
be chosen. The cascade could impose a mode. It could not withdraw one.

So each layer now carries a second, separate thing: a list of the modes it hides
from the layers below it. controlModesDisabled sits beside controlMode, on the
global layer as a plugin config field and on an organization as part of the same
pluginSettings blob its credentials already live in. A superadmin ticking Own
CSMS and Proxy CSMS takes both OCPP paths out of every picker underneath; an org
admin ticking Modbus takes it out of their own users'.

Three decisions are worth naming.

A hide-list governs the layers below, not the layer holding it. The superadmin
can keep running Proxy globally while hiding it from everyone else, which is
what you want while a mode is being repaired rather than retired: the operator
testing the fix is the one person who still needs to select it. The alternative,
a list that also invalidates its own layer's choice, would have made the panel
contradict itself — a mode chosen in one field and switched off in the one below
it.

But a hidden mode really is hidden, not merely absent from a dropdown. A user
who had picked Proxy last month stops resolving to Proxy the moment the
superadmin hides it, and falls back to monitoring only. Filtering the picker
alone would have left every existing charger on the broken path and quietly
disagreed with the list the operator had just filled in. Resolution now walks
the layers accumulating what each hides from the next, so a stored value only
takes effect if the layers above it still permit it.

And off is never hideable. It is what a charger falls back to and what an empty
cascade resolves to, so a layer that could take it away could leave the layer
below with a picker holding no valid choice at all. It is not among the
checkboxes in any of the three clients, and the parser drops it if it arrives
anyway.

The panel needed a field shape it did not have — several options, any number
chosen — so ConfigField grows a "multiselect" type, stored as the
comma-separated string that fits the flat map every other field already uses.
That is generic: any plugin can declare one now, and the PUT body is unchanged.
The phone's field specs grew the same way, a scopeOptions hook that narrows a
declared option list to what the server still offers, rather than teaching the
integration card about control modes specifically.

Both clients clamp a stored mode that has since been hidden back to off before
drawing the picker, so the box shows what will actually happen rather than a
choice that would be dropped on save.

Verified: Go tests pass, both frontends build, flutter analyze is clean, and the
panel's new checkbox field was rendered against the real stylesheet. The
end-to-end path — superadmin hides a mode, an org admin and then a user reload
and find it gone — has not been walked on a live stack; the panel is embedded in
the Go binary, so the remote deployment needs a rebuild before any of this is
visible there.

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

API Server/internal/plugins/builtin/ankersolix/ankersolix.go

@@ -334,6 +334,19 @@ func (p *Plugin) Descriptor() plugins.Descriptor {
 					{Value: "own", Label: "Own CSMS (full control)"},
 					{Value: "proxy", Label: "Proxy CSMS (relay + control)"},
 				}},
+			// controlModesDisabled hides modes from the layers *below* this one. It
+			// is how a superadmin takes a mode that is broken or unwanted in this
+			// deployment (OCPP, say) out of every organization's and user's picker
+			// without touching the mode this layer itself runs. Organizations carry
+			// the same field for their own users; see integrations_ankersolix.go.
+			{Key: "controlModesDisabled", Label: "Hidden control modes", Type: "multiselect",
+				Help: "Control modes to hide from organizations and users. A hidden mode disappears from their picker and stops taking effect for them; the mode chosen above, which is this layer's own, is unaffected. Off (monitoring only) can never be hidden — it is what a charger falls back to.",
+				Options: []plugins.SelectOption{
+					{Value: "mqtt", Label: "Anker cloud (works anywhere)"},
+					{Value: "modbus", Label: "Modbus TCP (local network)"},
+					{Value: "own", Label: "Own CSMS (full control)"},
+					{Value: "proxy", Label: "Proxy CSMS (relay + control)"},
+				}},
 		},
 	}
 }

API Server/internal/plugins/builtin/ankersolix/ankersolix_test.go

@@ -66,6 +66,31 @@ func TestDescriptor(t *testing.T) {
 			t.Errorf("controlMode is missing option %q", v)
 		}
 	}
+
+	// controlModesDisabled is the superadmin's hide-list: which of the modes the
+	// organizations and users below are offered at all. off is not among them —
+	// monitoring only is the fallback, so no layer may take it away.
+	hide, ok := fields["controlModesDisabled"]
+	if !ok {
+		t.Fatal("controlModesDisabled config field should be present")
+	}
+	if hide.Type != "multiselect" {
+		t.Errorf("controlModesDisabled type = %q, want multiselect", hide.Type)
+	}
+	hideable := map[string]bool{"mqtt": false, "modbus": false, "own": false, "proxy": false}
+	for _, o := range hide.Options {
+		if o.Value == "off" {
+			t.Error("off must not be hideable — it is what a charger falls back to")
+		}
+		if _, known := hideable[o.Value]; known {
+			hideable[o.Value] = true
+		}
+	}
+	for v, seen := range hideable {
+		if !seen {
+			t.Errorf("controlModesDisabled is missing option %q", v)
+		}
+	}
 }
 
 func TestRegistered(t *testing.T) {