Apply Roslyn/dotnet-format fixes across NeonSprawl.Server and
NeonSprawl.Server.Tests: collection expressions, concrete helper
return types, record XML docs, logging guards, quest store refactors,
and removal of redundant usings via GlobalUsings.cs. Extend
csharp-style.md with the recurring patterns.
Fix AAA layout in depletion tests, add ResourceNodeInstanceIds.Normalize,
throw on failed lazy-init after catalog hit, and update dependency register
footnote plus review doc strikethroughs.