chore(template): clean-slate template snapshot from bb4a0c7

Curated, product-agnostic snapshot of the post-story-04 tree: demo
content deleted, auth-only reference feature, web-next shell, all gates
green. Product-specific docs, ADRs 027-029, PRDs/epics/archive, editor
library traces, and product naming are curated out; generic template
repairs (coverage provider devDeps, root test:coverage script, live
lint fixes, root-only release-please) are kept. See TEMPLATE.md for
provenance, curation list, and usage.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016j8z4VHjedXDTjEDNg7qHK

packages/core-consent/src/handlers/withdraw.handler.test.ts

@@ -0,0 +1,28 @@
+import { describe, it, expect, beforeEach } from "vitest";
+import { RecordingConsent } from "@repo/core-testing/instrumentation";
+import { withdrawHandler } from "@/handlers/withdraw.handler";
+
+describe("withdrawHandler", () => {
+  let consent: RecordingConsent;
+
+  beforeEach(async () => {
+    consent = new RecordingConsent();
+    await consent.grant("analytics");
+  });
+
+  it("returns { success: true }", async () => {
+    const result = await withdrawHandler(consent, { category: "analytics" });
+    expect(result).toEqual({ success: true });
+  });
+
+  it("calls consent.withdraw with the given category", async () => {
+    await withdrawHandler(consent, { category: "analytics" });
+    expect(consent.withdrawals).toHaveLength(1);
+    expect(consent.withdrawals[0]).toBe("analytics");
+  });
+
+  it("category is no longer granted after withdraw", async () => {
+    await withdrawHandler(consent, { category: "analytics" });
+    expect(consent.isGranted("analytics")).toBe(false);
+  });
+});