fix(quote-sprint): propagate description edits to quote_items.description

The sprint-board pricing modal was writing operator edits only to
quote_items.quote_description, but the quote detail page renders
quote_items.description. The 'process and open' flow writes to
description directly, which is why edits appeared there but not
after saving from the sprint board.

Mirror the trimmed description into both quote_description and
description on save, matching the process page's write path.

Add three regression guards (edited description, cleared
description, untouched save) to sprint-item-pricing-modal.test.tsx.

src/components/sprint-item-pricing-modal.test.tsx

@@ -1,5 +1,5 @@
 import { describe, it, expect, vi, beforeEach } from "vitest";
-import { render, screen, waitFor } from "@testing-library/react";
+import { render, screen, waitFor, fireEvent } from "@testing-library/react";
 import userEvent from "@testing-library/user-event";
 
 import { SprintItemPricingModal } from "./sprint-item-pricing-modal";
@@ -20,17 +20,54 @@ import type { SprintItem } from "@/app/(app)/sprint/page";
 // and fetch so the attachment list returns an empty array. The save
 // flow also goes through `pb.collection().update()` — we let that
 // resolve to undefined so the save handler runs end-to-end.
+//
+// `updateMock` is hoisted so the "save" describe block can assert
+// against the payload written when the operator clicks "Save & next".
+// The layout tests don't care about it but it must not interfere
+// either — `vi.clearAllMocks()` in `beforeEach` resets it.
+
+const { updateMock } = vi.hoisted(() => ({
+  updateMock: vi.fn().mockResolvedValue(undefined),
+}));
 
 vi.mock("@/lib/pocketbase", () => ({
   __esModule: true,
   default: () => ({
     collection: () => ({
       getOne: vi.fn(),
-      update: vi.fn().mockResolvedValue(undefined),
+      update: updateMock,
     }),
   }),
 }));
 
+// Replace SupplierSearch with a plain <select> so the save tests can
+// drive supplier selection without rendering the real cmdk combobox.
+// Mirrors the pattern used in `order-sprint-process-modal.test.tsx`.
+vi.mock("@/components/ui/supplier-search", () => ({
+  SupplierSearch: ({
+    value,
+    onValueChange,
+    suppliers,
+  }: {
+    value: string;
+    onValueChange: (v: string) => void;
+    suppliers: Array<{ id: string; suppliername?: string }>;
+  }) => (
+    <select
+      aria-label="Supplier"
+      value={value}
+      onChange={(e) => onValueChange(e.target.value)}
+    >
+      <option value="">Pick…</option>
+      {suppliers.map((s) => (
+        <option key={s.id} value={s.id}>
+          {s.suppliername ?? s.id}
+        </option>
+      ))}
+    </select>
+  ),
+}));
+
 // Default item-shape helper: a claimed-by-me M20 Flat Washers row
 // already attached to a parent quote that has a customer expanded
 // through the standard `expand.quote.expand.customer` chain. Mirrors
@@ -343,4 +380,141 @@ describe("SprintItemPricingModal — layout", () => {
     );
     expect(togglePrecedesDescription).toBe(true);
   });
+});
+
+// ─── Save flow ───────────────────────────────────────────────────────
+//
+// These tests exercise the operator's "edit description → Save & next"
+// path. The bug they guard against: the sprint modal used to only
+// write `quote_description` on save, leaving `description` untouched.
+// Because the quote detail page (`/quotes/[id]`) and the process page
+// (`/quotes/[id]/process`) only render `item.description`, the
+// operator's edit from the sprint board was invisible on the quote
+// itself — it was only visible when the PDF was regenerated. The
+// working "process and open" flow updates `description` directly,
+// which is why opening the quote after editing on the process page
+// shows the change.
+//
+// The fix mirrors the operator's edited `quoteDescription` value to
+// both `quote_description` AND `description` so the edit appears on
+// every surface that quotes the line item.
+
+describe("SprintItemPricingModal — save", () => {
+  beforeEach(() => {
+    updateMock.mockReset();
+    updateMock.mockResolvedValue(undefined);
+  });
+
+  it("writes both `description` and `quote_description` on save so the edit propagates to the quote detail page", async () => {
+    // Original RFQ wording is on `description`; `quote_description`
+    // is empty so the modal pre-fills the textarea with the
+    // customer's wording. The operator types a cleaned-up version.
+    renderModal();
+
+    const textarea = screen.getByTestId("sprint-quote-description");
+    fireEvent.change(textarea, {
+      target: { value: "M20 HT Nuts G8 HDG, 50mm" },
+    });
+
+    // Pick a supplier — the save handler refuses to proceed without
+    // one. The SupplierSearch component is mocked to a plain <select>
+    // so we can drive it from the test.
+    fireEvent.change(screen.getByLabelText("Supplier"), {
+      target: { value: "sup-1" },
+    });
+
+    // Set cost + selling so the row becomes "processed" and the
+    // gating check (`cost <= 0 && selling <= 0`) passes.
+    fireEvent.change(screen.getByTestId("sprint-cost-input"), {
+      target: { value: "2.39" },
+    });
+    fireEvent.change(screen.getByTestId("sprint-selling-input"), {
+      target: { value: "3.11" },
+    });
+
+    fireEvent.click(screen.getByTestId("sprint-save-button"));
+
+    await waitFor(() => {
+      expect(updateMock).toHaveBeenCalledTimes(1);
+    });
+
+    const [id, payload] = updateMock.mock.calls[0]!;
+    // PATCH goes to the right row.
+    expect(id).toBe("qi-1");
+    // Both description fields are updated — the regression guard.
+    // Without the fix, only `quote_description` is set and the
+    // operator's edit disappears on the quote detail page.
+    expect(payload).toMatchObject({
+      description: "M20 HT Nuts G8 HDG, 50mm",
+      quote_description: "M20 HT Nuts G8 HDG, 50mm",
+    });
+  });
+
+  it("writes empty string to both description fields when the operator clears the description", async () => {
+    // If the operator explicitly clears the description (e.g. they
+    // want a placeholder line with no description), the PATCH must
+    // propagate the empty value to both fields — not just clear
+    // `quote_description` while leaving `description` at the old
+    // RFQ wording. Symmetry with the populated case.
+    renderModal();
+
+    const textarea = screen.getByTestId("sprint-quote-description");
+    fireEvent.change(textarea, { target: { value: "" } });
+    fireEvent.change(screen.getByLabelText("Supplier"), {
+      target: { value: "sup-1" },
+    });
+    fireEvent.change(screen.getByTestId("sprint-cost-input"), {
+      target: { value: "1" },
+    });
+    fireEvent.change(screen.getByTestId("sprint-selling-input"), {
+      target: { value: "2" },
+    });
+
+    fireEvent.click(screen.getByTestId("sprint-save-button"));
+
+    await waitFor(() => {
+      expect(updateMock).toHaveBeenCalledTimes(1);
+    });
+    const [, payload] = updateMock.mock.calls[0]!;
+    expect(payload).toMatchObject({
+      description: "",
+      quote_description: "",
+    });
+  });
+
+  it("writes the existing description when the operator saves without editing the textarea", async () => {
+    // Pre-fill seeds the textarea with `quote_description || description`.
+    // When the operator hits Save without touching the field, both
+    // fields end up holding the original RFQ wording — `description`
+    // is unchanged on the row (we just wrote the same value back),
+    // `quote_description` now matches `description` so the PDF
+    // renderer keeps using the same text either way. Guards against
+    // an accidental regression where the mirror logic is conditional
+    // on "description was edited" and skips the write on no-op saves.
+    renderModal();
+
+    fireEvent.change(screen.getByLabelText("Supplier"), {
+      target: { value: "sup-1" },
+    });
+    fireEvent.change(screen.getByTestId("sprint-cost-input"), {
+      target: { value: "1" },
+    });
+    fireEvent.change(screen.getByTestId("sprint-selling-input"), {
+      target: { value: "2" },
+    });
+
+    fireEvent.click(screen.getByTestId("sprint-save-button"));
+
+    await waitFor(() => {
+      expect(updateMock).toHaveBeenCalledTimes(1);
+    });
+    const [, payload] = updateMock.mock.calls[0]!;
+    // The pre-fill is `description` ("M20 Flat Washers HDG") because
+    // `quote_description` is empty on the fixture. Both fields land
+    // on that same string — same value, but explicitly written.
+    expect(payload).toMatchObject({
+      description: "M20 Flat Washers HDG",
+      quote_description: "M20 Flat Washers HDG",
+    });
+  });
 });

src/components/sprint-item-pricing-modal.tsx

@@ -554,6 +554,28 @@ export function SprintItemPricingModal({
           ? Number((((selling - cost) / cost) * 100).toFixed(2))
           : 0;
       const itemPatch = pb.collection("quote_items").update(item.id, {
+        // Propagate the operator's edit to BOTH `quote_description`
+        // (what we put on the PDF — operator's cleaned-up text) AND
+        // `description` (what the quote detail page and process
+        // page render — see `/quotes/[id]/page.tsx` line ~2553 and
+        // `/quotes/[id]/process/page.tsx` textarea at line ~1257).
+        //
+        // Without mirroring to `description`, an operator who
+        // cleans up the description from the sprint board sees no
+        // change when they open the quote (the detail page only
+        // renders `description`, not `quote_description`); the
+        // working "process and open" flow updates `description`
+        // directly, which is why it appears to work. Mirroring
+        // matches that field and makes the edit visible on every
+        // surface that quotes line items.
+        //
+        // The two fields retain their distinct meanings
+        // (customer's original RFQ wording vs operator's cleaned-
+        // up PDF text) — the PDF render still uses
+        // `quote_description || description` — but the operator's
+        // "what we put on the quote" edit is now the authoritative
+        // description wherever a description is shown.
+        description: quoteDescription.trim(),
         quote_description: quoteDescription.trim(),
         quantity: Math.max(1, Number(quantity) || 1),
         cost_price: round2(cost),