FS PDF Compressor 1.0.4

Secure in-app updates\n\n- Adds signed update checks via Sparkle and Check for Updates… in the application menu.\n- Includes a signed update ZIP for future automatic upgrades.\n- Keeps all PDF processing local, with the existing quality profiles and diagnostics.\n\nThis Apple Silicon release is Developer ID signed, notarized, stapled, and accepted by Gatekeeper.