feat(workflows): publish the model brand mark on the workflows entry

package.json

@@ -1,7 +1,7 @@
 {
   "name": "@tangle-network/sandbox-ui",
-  "version": "0.81.0",
-  "description": "Unified UI component library for Tangle Sandbox — primitives, chat, dashboard, terminal, editor, and workspace components",
+  "version": "0.82.0",
+  "description": "Unified UI component library for Tangle Sandbox \u2014 primitives, chat, dashboard, terminal, editor, and workspace components",
   "repository": {
     "type": "git",
     "url": "https://github.com/tangle-network/sandbox-ui"

src/workflows/entry.test.ts

@@ -0,0 +1,25 @@
+import { describe, expect, it } from "vitest"
+import * as workflows from "./index"
+
+/**
+ * The workflows entry is the one a host renders a graph from, and the node cards it
+ * renders resolve a model's brand mark themselves (node-ui.tsx). A host labelling a
+ * node OUTSIDE the canvas — a side panel, a run row — needs the same two symbols, and
+ * the only other entry that publishes them is `dashboard`, which carries the whole
+ * model-picker/widget surface behind it: reaching for them there costs a consumer
+ * kilobytes of gzipped JS for a glyph. Keeping them on this entry is therefore a
+ * contract, not a convenience, and this asserts it stays one.
+ */
+describe("@tangle-network/sandbox-ui/workflows entry", () => {
+  it("publishes the model brand mark the graph's own node cards use", () => {
+    expect(typeof workflows.modelBrandFor).toBe("function")
+    expect(typeof workflows.ModelBrandStack).toBe("function")
+  })
+
+  it("resolves a brand from a bare model id, as a node card does", () => {
+    expect(workflows.modelBrandFor("anthropic/claude-sonnet-4-5")?.lab.key).toBe(
+      "anthropic",
+    )
+    expect(workflows.modelBrandFor("some-internal/model-x")).toBeNull()
+  })
+})

src/workflows/index.ts

@@ -27,3 +27,14 @@ export {
 // WorkflowGraph component is reached only through the lazy wrapper's import().
 export type { WorkflowGraphProps } from "./WorkflowGraph";
 export { WorkflowGraph as WorkflowGraphLazy } from "./WorkflowGraphLazy";
+
+// The brand mark of the model a node ran on. The graph's own node cards resolve and
+// render these (node-ui.tsx), so a host labelling a node OUTSIDE the canvas — a side
+// panel, a run row — reaches for the same two symbols. Exported here so it can have
+// them without importing the dashboard entry, which drags the whole model-picker /
+// widget surface in behind them.
+export {
+  type ModelBrandIdentity,
+  ModelBrandStack,
+  modelBrandFor,
+} from "../lib/model-brand";