fix(desktop): launch WeChat share extension with system entry point

apps/desktop/share-extension/ShareViewController.swift

@@ -38,10 +38,10 @@ final class ShareViewController: NSViewController {
             guard let url = shareURL(for: destination) else {
                 throw CocoaError(.fileWriteUnknown)
             }
-            if let context = extensionContext {
-                _ = await context.open(url)
-                context.completeRequest(returningItems: nil)
+            guard let context = extensionContext, await context.open(url) else {
+                throw CocoaError(.fileReadUnknown)
             }
+            context.completeRequest(returningItems: nil)
         } catch {
             extensionContext?.cancelRequest(withError: error)
         }

scripts/build-macos-share-extension.sh

@@ -30,12 +30,19 @@ sed \
 plutil -lint "$appex/Contents/Info.plist" >/dev/null
 swiftc \
   -O \
+  -parse-as-library \
+  -application-extension \
   -target "$target" \
   -sdk "$sdk" \
   -module-name EdgeEverShare \
   -emit-executable \
+  -Xlinker -e -Xlinker _NSExtensionMain \
   -o "$appex/Contents/MacOS/EdgeEverShare" \
   "$source_directory/ShareViewController.swift"
+if ! xcrun nm -u "$appex/Contents/MacOS/EdgeEverShare" | grep -q '_NSExtensionMain'; then
+  echo "Share extension is missing the NSExtensionMain entry point" >&2
+  exit 1
+fi
 chmod 755 "$appex/Contents/MacOS/EdgeEverShare"
 codesign \
   --force \

scripts/verify-desktop-package.mjs

@@ -96,6 +96,9 @@ if (requestedPlatform === "darwin") {
   const shareExtension = join(unpackedApp, "Contents", "PlugIns", "EdgeEverShare.appex", "Contents", "MacOS", "EdgeEverShare");
   assert.ok(existsSync(shareExtension), `macOS app bundle is missing the WeChat share extension: ${shareExtension}`);
   verifyMachOArch(shareExtension, requestedArch, "WeChat share extension");
+  const extensionSymbols = spawnSync("nm", ["-u", shareExtension], { encoding: "utf8" });
+  assert.equal(extensionSymbols.status, 0, `WeChat share extension symbol inspection failed: ${extensionSymbols.stderr || extensionSymbols.stdout}`);
+  assert.match(extensionSymbols.stdout, /\b_NSExtensionMain\b/, "WeChat share extension must use the system extension entry point");
   const shareExtensionInfo = readFileSync(join(unpackedApp, "Contents", "PlugIns", "EdgeEverShare.appex", "Contents", "Info.plist"), "utf8");
   assert.match(shareExtensionInfo, /com\.apple\.share-services/, "WeChat share extension must register a share service");
   assert.match(shareExtensionInfo, /NSExtensionActivationSupportsFileWithMaxCount/, "WeChat share extension must accept shared files");