Repro: JLC 1.0mm stackup selection silently picks JLC04101H-7628 (#4890)

tests/components/normal-components/board-stackup-preset-4890.test.tsx

@@ -0,0 +1,40 @@
+import { expect, test } from "bun:test"
+import { getBoardStackupFixture } from "tests/fixtures/get-board-stackup-fixture"
+
+test("4-layer 1.0mm FR4 currently selects JLC04101H-7628", async () => {
+  const circuit = await getBoardStackupFixture({
+    width: 20,
+    height: 20,
+    layers: 4,
+    thickness: "1.0mm",
+    fabricatorPreset: "jlcpcb_standard",
+  })
+
+  const stackups = circuit.db.pcb_stackup.list()
+  expect(stackups).toHaveLength(1)
+  expect(stackups[0]!.layers[1]).toMatchObject({
+    material_name: "7628 RC49%",
+    thickness: 0.2104,
+  })
+})
+
+test.failing(
+  "jlcpcbStackup selects JLC04101H-3313 for a 4-layer 1.0mm FR4 board",
+  async () => {
+    const circuit = await getBoardStackupFixture({
+      width: 20,
+      height: 20,
+      layers: 4,
+      thickness: "1.0mm",
+      fabricatorPreset: "jlcpcb_standard",
+      // @ts-expect-error - jlcpcbStackup is the proposed API and is not implemented yet
+      jlcpcbStackup: "JLC04101H-3313",
+    })
+
+    const stackup = circuit.db.pcb_stackup.list()[0]!
+    expect(stackup.layers[1]).toMatchObject({
+      material_name: "3313 RC57%",
+      thickness: 0.0994,
+    })
+  },
+)