fix(updater): separate Windows 7 offline update path

apps/desktop/src/lib/__tests__/windowsInstallerTemplate.spec.ts

@@ -0,0 +1,65 @@
+import { readFileSync } from "node:fs";
+import { resolve } from "node:path";
+import { describe, expect, it } from "vitest";
+import { shouldAbortWindowsWebView2RuntimeFallback } from "@/lib/app/windowsWebView2RuntimePolicy";
+
+const template = readFileSync(resolve(process.cwd(), "src-tauri/windows/nsis/installer.nsi"), "utf8");
+
+describe("Windows offline installer template", () => {
+  it.each([
+    {
+      name: "continues after installer failure when a compatible Runtime remains",
+      input: { installerExitCode: 1, runtimeDetected: true, runtimeMeetsMinimum: true },
+      expected: false,
+    },
+    {
+      name: "aborts after installer failure when the Runtime is missing",
+      input: { installerExitCode: 1, runtimeDetected: false, runtimeMeetsMinimum: false },
+      expected: true,
+    },
+    {
+      name: "aborts after installer failure when the Runtime is below the minimum",
+      input: { installerExitCode: 1, runtimeDetected: true, runtimeMeetsMinimum: false },
+      expected: true,
+    },
+    {
+      name: "continues after a successful installer even before the registry refresh",
+      input: { installerExitCode: 0, runtimeDetected: false, runtimeMeetsMinimum: false },
+      expected: false,
+    },
+  ])("$name", ({ input, expected }) => {
+    expect(shouldAbortWindowsWebView2RuntimeFallback(input)).toBe(expected);
+  });
+
+  it("binds the tested fallback inputs to the NSIS Runtime recheck contract", () => {
+    expect(template).toContain(`!macro ShouldAbortWebView2OfflineInstall INSTALL_RESULT RUNTIME_VERSION MINIMUM_COMPARISON RESULT
+  StrCpy \${RESULT} 0
+  \${If} \${INSTALL_RESULT} <> 0
+    \${If} \${RUNTIME_VERSION} == ""
+      StrCpy \${RESULT} 1
+    \${ElseIf} \${MINIMUM_COMPARISON} = 1
+      StrCpy \${RESULT} 1
+    \${EndIf}
+  \${EndIf}
+!macroend`);
+    expect(template).toContain(`!insertmacro ReadWebView2RuntimeVersion $4
+      \${If} $4 != ""
+        !if "\${MINIMUMWEBVIEW2VERSION}" != ""
+          \${VersionCompare} "\${MINIMUMWEBVIEW2VERSION}" "$4" $R0
+        !endif
+      \${EndIf}
+    \${EndIf}
+    !insertmacro ShouldAbortWebView2OfflineInstall $1 $4 $R0 $R1
+    \${If} $R1 = 1
+      Abort "$(webview2AbortError)"
+    \${EndIf}`);
+  });
+
+  it("uses the same registry detection before and after Runtime installation", () => {
+    const runtimeChecks = template.match(/!insertmacro ReadWebView2RuntimeVersion \$4/g) ?? [];
+
+    expect(runtimeChecks).toHaveLength(2);
+    expect(template).toContain('ReadRegStr ${RESULT} HKLM "SOFTWARE\\WOW6432Node\\Microsoft\\EdgeUpdate\\Clients\\${WEBVIEW2APPGUID}" "pv"');
+    expect(template).toContain('ReadRegStr ${RESULT} HKCU "SOFTWARE\\Microsoft\\EdgeUpdate\\Clients\\${WEBVIEW2APPGUID}" "pv"');
+  });
+});

apps/desktop/src/lib/app/windowsWebView2RuntimePolicy.ts

@@ -0,0 +1,9 @@
+export interface WindowsWebView2RuntimeFallbackInput {
+  installerExitCode: number;
+  runtimeDetected: boolean;
+  runtimeMeetsMinimum: boolean;
+}
+
+export function shouldAbortWindowsWebView2RuntimeFallback(input: WindowsWebView2RuntimeFallbackInput): boolean {
+  return input.installerExitCode !== 0 && (!input.runtimeDetected || !input.runtimeMeetsMinimum);
+}

apps/desktop/src/lib/backend/tauri.ts

@@ -1492,6 +1492,7 @@ export interface UpdateInfo {
   latest_version: string;
   update_available: boolean;
   portable_mode: boolean;
+  manual_update_only: boolean;
   release_name: string;
   release_url: string;
   release_notes: string;