Expand the partial key-field merging section with Before/After explanation
and migration guide. Mark it as a breaking change in Highlights and Notes
sections across all three languages (zh/en/ja) and CHANGELOG.md.
- Update version numbers in package.json, Cargo.toml, tauri.conf.json
- Add CHANGELOG.md entry for v3.11.0
- Add trilingual release notes (zh/en/ja)
- Update user manual version info