- Fix JA README macOS FAQ still claiming app is unsigned (now code-signed & notarized)
- Update SessionManager description from "Claude Code only" to "all supported apps" (EN/ZH/JA)
- Replace non-existent Flatpak download entry with self-build reference (EN/ZH/JA)
- Add OpenCode and OpenClaw filesystem paths to Flatpak minimal permissions
- Bump user manual version to v3.12.3
- Add RPM bundle to Linux build targets in CI workflow
- Add Flatpak manifest, desktop entry, and AppStream metainfo
- Update release workflow to build and publish .rpm and .flatpak artifacts
- Update README docs with new Linux package formats and installation instructions
- Add .gitignore rules for Flatpak build artifacts