Holos 4 - 82e40112

Improve CLI settings export robustness and docs

BuildSettingsFileString: refactor settings-file construction to handle null Farm/Defaults/Climate/GeographicData, replace large initializer with incremental keys.Add calls, and add ReportError helper that logs errors to keys and console to avoid NREs when data is missing. H.CLI.csproj: bump MinimumRequiredVersion and ApplicationRevision for new build. H.Content/FAQ: add guidance about supplemental hay vs. utilization rate and renumber FAQ entries. Changelog.md: add May 28, 2026 entries documenting fixes for supplemental hay carbon accounting and beef/dairy NH3 emission-factor lookup for land-applied solid manure.