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.
Register SkillDefinitionCatalog from content/skills with JsonSchema.Net validation
mirroring validate_content.py and the prototype Slice 1 gate. Resolve paths via
Content:SkillsDirectory or discovery from AppContext.BaseDirectory. Eager-load
after WebApplication build so bad catalogs block startup. Add unit and host
tests, pin test factories to repo skills, document config in server/README, add
manual QA checklist, and extend Bruno GET /health smoke tests.
VinPropane