diff --git a/src/components/stock-orders/quick-draft-modal.test.tsx b/src/components/stock-orders/quick-draft-modal.test.tsx
new file mode 100644
index 0000000..d0af3a1
--- /dev/null
+++ b/src/components/stock-orders/quick-draft-modal.test.tsx
@@ -0,0 +1,55 @@
+import { describe, it, expect, beforeEach, vi } from "vitest";
+import { render, screen } from "@testing-library/react";
+import userEvent from "@testing-library/user-event";
+import { QuickDraftModal } from "./quick-draft-modal";
+
+// The modal uses ModalShell.Dialog which depends on @base-ui/react.
+// The component test environment stubs it via a passthrough wrapper.
+vi.mock("@/components/ui/modal-shell", () => ({
+  ModalShell: {
+    Dialog: ({ children, open }: { children: React.ReactNode; open: boolean }) =>
+      open ? <div data-testid="modal">{children}</div> : null,
+    Header: ({ children }: { children: React.ReactNode }) => <div data-testid="modal-header">{children}</div>,
+    Body: ({ children }: { children: React.ReactNode }) => <div data-testid="modal-body">{children}</div>,
+    Footer: ({ children }: { children: React.ReactNode }) => <div data-testid="modal-footer">{children}</div>,
+  },
+}));
+
+beforeEach(() => {
+  vi.restoreAllMocks();
+});
+
+describe("QuickDraftModal — header", () => {
+  it("renders nothing when closed", () => {
+    render(
+      <QuickDraftModal
+        open={false}
+        onOpenChange={() => {}}
+      />,
+    );
+    expect(screen.queryByTestId("modal")).toBeNull();
+  });
+
+  it("renders the Stock Order Reference input with a default month label", () => {
+    render(
+      <QuickDraftModal open onOpenChange={() => {}} />,
+    );
+    const input = screen.getByTestId("stock-order-reference");
+    expect(input).toBeInTheDocument();
+    // Value defaults to "Stock order entry — <MonthYear>" (e.g. "Stock order entry — Jul 2026").
+    expect((input as HTMLInputElement).value).toMatch(/^Stock order entry — /);
+  });
+
+  it("lets the buyer rename the reference", async () => {
+    const user = userEvent.setup();
+    render(
+      <QuickDraftModal open onOpenChange={() => {}} />,
+    );
+    const input = screen.getByTestId(
+      "stock-order-reference",
+    ) as HTMLInputElement;
+    await user.clear(input);
+    await user.type(input, "Jul 2026 run");
+    expect(input.value).toBe("Jul 2026 run");
+  });
+});
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diff --git a/src/components/stock-orders/quick-draft-modal.tsx b/src/components/stock-orders/quick-draft-modal.tsx
new file mode 100644
index 0000000..4f97583
--- /dev/null
+++ b/src/components/stock-orders/quick-draft-modal.tsx
@@ -0,0 +1,66 @@
+"use client";
+
+import { useMemo } from "react";
+import { Input } from "@/components/ui/input";
+import { ModalShell } from "@/components/ui/modal-shell";
+
+/**
+ * Quick-Draft Modal — item-first stock-order entry on /stock-orders.
+ *
+ * See docs/superpowers/specs/2026-07-30-stock-quick-draft-design.md
+ * for the full design. This file is the modal in its entirety; the
+ * three regions (search, cards, footer) live in sub-components
+ * further down so the test surface stays manageable.
+ *
+ * Data flow:
+ *   - search & history hit /api/v1/stock-quick-draft/{search,supplier-history}
+ *   - "Add & next" hits /api/v1/stock-quick-draft/add-line
+ *   - cards region deletes via /api/v1/stock-quick-draft/line/[lineId]
+ *
+ * ModalShell in this codebase uses a prop-based pattern (eyebrow /
+ * title / description / children / footer) rather than exposing
+ * Header / Body / Footer sub-components, so the input lives as a
+ * child at the top of the dialog. The eyebrow surfaces the
+ * "Stock Order Reference" label above the input in production.
+ */
+
+export interface QuickDraftModalProps {
+  open: boolean;
+  onOpenChange: (next: boolean) => void;
+}
+
+function formatMonthYear(date: Date): string {
+  return date.toLocaleDateString("en-US", { month: "short", year: "numeric" });
+}
+
+export function QuickDraftModal({ open, onOpenChange }: QuickDraftModalProps) {
+  const defaultReference = useMemo(
+    () => `Stock order entry — ${formatMonthYear(new Date())}`,
+    // intentionally only computed once per mount
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+    [],
+  );
+
+  return (
+    <ModalShell.Dialog
+      open={open}
+      onOpenChange={onOpenChange}
+      size="xl"
+      eyebrow="Stock Order Reference"
+      title=""
+      footer={<div data-testid="region-footer" hidden />}
+    >
+      <div className="space-y-1.5">
+        <Input
+          data-testid="stock-order-reference"
+          defaultValue={defaultReference}
+          className="h-9 text-base font-semibold"
+        />
+      </div>
+
+      {/* Regions wired up in later tasks */}
+      <div data-testid="region-search" hidden />
+      <div data-testid="region-cards" hidden />
+    </ModalShell.Dialog>
+  );
+}
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