fix(support-info): show Windows marketing name in support info

apps/desktop/src/lib/app/supportInfo.ts

@@ -32,10 +32,33 @@ export function formatSupportInfoRuntime(runtime: AppSupportInfo["runtime"], lab
   return labels.unknown;
 }
 
+/**
+ * Map a Windows NT kernel version (`major.minor.build[.ubr]`) to its marketing name.
+ *
+ * Windows 11 still reports kernel `10.0.x`; the build number is what distinguishes it
+ * (build >= 22000 is Windows 11). Returns null for non-`10.0` versions (e.g. legacy 6.x)
+ * so callers keep the raw string instead of guessing.
+ */
+export function windowsMarketingName(version: string | null | undefined): string | null {
+  const trimmed = version?.trim();
+  if (!trimmed) return null;
+  const parts = trimmed.split(".");
+  if (parts.length < 3) return null;
+  const major = Number(parts[0]);
+  const build = Number(parts[2]);
+  if (!Number.isInteger(major) || !Number.isInteger(build)) return null;
+  if (major !== 10) return null;
+  return build >= 22000 ? "Windows 11" : "Windows 10";
+}
+
 export function formatSupportInfoOperatingSystem(info: AppSupportInfo, unknownLabel: string): string {
   const name = info.osName?.trim();
   const version = info.osVersion?.trim();
   if (!name && !version) return unknownLabel;
+  if (name?.toLowerCase() === "windows") {
+    const marketing = windowsMarketingName(version);
+    if (marketing) return version ? `${marketing} (${version})` : marketing;
+  }
   return [name, version].filter(Boolean).join(" ");
 }
 

packages/app-tests/supportInfo.test.ts

@@ -1,6 +1,6 @@
 import { strict as assert } from "node:assert";
 import { test } from "vitest";
-import { buildAppSupportInfoRows, formatAppSupportInfoForClipboard, normalizeSupportInfoVersion } from "../../apps/desktop/src/lib/app/supportInfo.ts";
+import { buildAppSupportInfoRows, formatAppSupportInfoForClipboard, formatSupportInfoOperatingSystem, normalizeSupportInfoVersion, windowsMarketingName } from "../../apps/desktop/src/lib/app/supportInfo.ts";
 import type { AppSupportInfoLabels } from "../../apps/desktop/src/lib/app/supportInfo.ts";
 import type { AppSupportInfo } from "../../apps/desktop/src/lib/backend/tauri.ts";
 
@@ -49,3 +49,34 @@ test("formats support info clipboard text in stable issue-friendly order", () =>
     ["DBX Version: v0.5.50", "Runtime: Desktop", "Operating System: macOS 15.5", "Architecture: aarch64"].join("\n"),
   );
 });
+
+test("maps Windows kernel build to its marketing name", () => {
+  assert.equal(windowsMarketingName("10.0.26200.9457"), "Windows 11");
+  assert.equal(windowsMarketingName("10.0.22000.1"), "Windows 11");
+  assert.equal(windowsMarketingName("10.0.19045.5011"), "Windows 10");
+  assert.equal(windowsMarketingName("6.1.7601"), null);
+  assert.equal(windowsMarketingName(""), null);
+  assert.equal(windowsMarketingName("10.0"), null);
+});
+
+test("shows Windows marketing name while keeping the raw build for diagnostics", () => {
+  assert.equal(
+    formatSupportInfoOperatingSystem({ appVersion: "0.6.22", runtime: "desktop", osName: "Windows", osVersion: "10.0.26200.9457", arch: "x86_64" }, labels.unknown),
+    "Windows 11 (10.0.26200.9457)",
+  );
+  assert.equal(
+    formatSupportInfoOperatingSystem({ appVersion: "0.6.22", runtime: "desktop", osName: "Windows", osVersion: "10.0.19045.5011", arch: "x64" }, labels.unknown),
+    "Windows 10 (10.0.19045.5011)",
+  );
+});
+
+test("leaves non-10.0 Windows and other platforms unchanged", () => {
+  assert.equal(
+    formatSupportInfoOperatingSystem({ appVersion: "x", runtime: "desktop", osName: "Windows", osVersion: "6.1.7601", arch: "x86" }, labels.unknown),
+    "Windows 6.1.7601",
+  );
+  assert.equal(
+    formatSupportInfoOperatingSystem({ appVersion: "x", runtime: "desktop", osName: "macOS", osVersion: "15.5", arch: "aarch64" }, labels.unknown),
+    "macOS 15.5",
+  );
+});