3409

Added

• Per-Game Save Export — long-press a game → Export Saves creates a zip of battery saves and save states and opens the share sheet (iOS) or saves to Documents/Exports (tvOS); export is enabled whenever the game has save states or battery saves on disk
• SaveExporter service — PVLibrary.SaveExporter provides exportSaves(for:) with MD5-manifest bundles and an importSaves(from:for:) file-restore API for future use; no import UI is included in this PR — the context menu only exposes export