fix(ci): align strict nullable typing across channels and ui

ui/src/ui/controllers/config/form-utils.node.test.ts

@@ -110,10 +110,11 @@ describe("form-utils preserves numeric types", () => {
     const raw = serializeConfigForm(form);
     const parsed = JSON.parse(raw);
     const model = parsed.models.providers.xai.models[0] as Record<string, unknown>;
+    const cost = model.cost as Record<string, unknown>;
 
     expectNumericModelCore(model);
-    expect(typeof model.cost.input).toBe("number");
-    expect(model.cost.input).toBe(0.5);
+    expect(typeof cost.input).toBe("number");
+    expect(cost.input).toBe(0.5);
   });
 
   it("cloneConfigObject + setPathValue preserves unrelated numeric fields", () => {

ui/src/ui/views/nodes.ts

@@ -218,10 +218,10 @@ function renderTokenRow(deviceId: string, token: DeviceTokenSummary, props: Node
 
 type BindingAgent = {
   id: string;
-  name?: string;
+  name: string | undefined;
   index: number;
   isDefault: boolean;
-  binding?: string | null;
+  binding: string | null;
 };
 
 type BindingNode = NodeTargetOption;

ui/src/ui/views/usage-render-details.test.ts

@@ -28,6 +28,10 @@ const baseUsage = {
   output: 400,
   cacheRead: 200,
   cacheWrite: 100,
+  inputCost: 0.3,
+  outputCost: 0.4,
+  cacheReadCost: 0.2,
+  cacheWriteCost: 0.1,
   durationMs: 60000,
   firstActivity: 0,
   lastActivity: 60000,