Add IndieAbout + IndieBackup, TestFlight release pipeline

IndieAbout: About section in iOS Settings and macOS About window; LICENSE
switched to the portfolio-standard ISC text (reflowed for in-app rendering).

IndieBackup: files-only backup/restore of the iCloud container documents
('.notesbackup' document type on both platforms), SwiftData cache rebuilt
via SyncEngine.rebuildCache() after restore, monitors suspended during the
file swap, onOpenURL import with pre-launch queueing.

Release pipeline: Scripts/release.sh (ios|mac|all) archives and uploads via
xcodebuild + ASC API key; platform-partitioned build numbers (iOS even,
macOS odd) since both targets share one bundle ID and build sequence.

Notes/Resources/Info-iOS.plist

@@ -49,5 +49,43 @@
 			<string>Notes</string>
 		</dict>
 	</dict>
+	<key>LSSupportsOpeningDocumentsInPlace</key>
+	<true/>
+	<key>CFBundleDocumentTypes</key>
+	<array>
+		<dict>
+			<key>CFBundleTypeName</key>
+			<string>Notes Backup</string>
+			<key>CFBundleTypeRole</key>
+			<string>Editor</string>
+			<key>LSHandlerRank</key>
+			<string>Owner</string>
+			<key>LSItemContentTypes</key>
+			<array>
+				<string>dev.rzen.indie.Notes.backup</string>
+			</array>
+		</dict>
+	</array>
+	<key>UTExportedTypeDeclarations</key>
+	<array>
+		<dict>
+			<key>UTTypeIdentifier</key>
+			<string>dev.rzen.indie.Notes.backup</string>
+			<key>UTTypeDescription</key>
+			<string>Notes Backup</string>
+			<key>UTTypeConformsTo</key>
+			<array>
+				<string>public.data</string>
+				<string>public.archive</string>
+			</array>
+			<key>UTTypeTagSpecification</key>
+			<dict>
+				<key>public.filename-extension</key>
+				<array>
+					<string>notesbackup</string>
+				</array>
+			</dict>
+		</dict>
+	</array>
 </dict>
 </plist>