fix: align macOS bundle ID with iOS for unified App Store listing

Changed macOS targets from com.nostrkey.plugin to com.nostrkey and
com.nostrkey.plugin.Extension to com.nostrkey.Extension to match the
iOS bundle IDs. Required for both platforms to appear under the same
App Store Connect listing.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: vveerrgg

dev/apple/NostrKey.xcodeproj/project.pbxproj

@@ -971,7 +971,7 @@
 					"-framework",
 					SafariServices,
 				);
-				PRODUCT_BUNDLE_IDENTIFIER = com.nostrkey.plugin.Extension;
+				PRODUCT_BUNDLE_IDENTIFIER = com.nostrkey.Extension;
 				PRODUCT_NAME = "NostrKey Extension";
 				SDKROOT = macosx;
 				SKIP_INSTALL = YES;
@@ -1005,7 +1005,7 @@
 					"-framework",
 					SafariServices,
 				);
-				PRODUCT_BUNDLE_IDENTIFIER = com.nostrkey.plugin.Extension;
+				PRODUCT_BUNDLE_IDENTIFIER = com.nostrkey.Extension;
 				PRODUCT_NAME = "NostrKey Extension";
 				SDKROOT = macosx;
 				SKIP_INSTALL = YES;
@@ -1055,7 +1055,7 @@
 					"-framework",
 					WebKit,
 				);
-				PRODUCT_BUNDLE_IDENTIFIER = com.nostrkey.plugin;
+				PRODUCT_BUNDLE_IDENTIFIER = com.nostrkey;
 				PRODUCT_NAME = NostrKey;
 				SDKROOT = macosx;
 				SWIFT_EMIT_LOC_STRINGS = YES;
@@ -1104,7 +1104,7 @@
 					"-framework",
 					WebKit,
 				);
-				PRODUCT_BUNDLE_IDENTIFIER = com.nostrkey.plugin;
+				PRODUCT_BUNDLE_IDENTIFIER = com.nostrkey;
 				PRODUCT_NAME = NostrKey;
 				SDKROOT = macosx;
 				SWIFT_EMIT_LOC_STRINGS = YES;