Replace Console.WriteLine calls with ILogger usage across all CLI commands.
Serilog is configured via DI with clean message-only output suitable for
CLI tooling. Log levels map to --quiet (Warning), default (Information),
and --verbose (Debug) flags.
- Add Serilog packages and configure in Program.cs
- Convert all 7 command files to use ILoggerFactory from DI
- Add BeginScope with context properties (Command, ConfigPath, etc.)
- Create logging_style.md documenting patterns and best practices
- Update tests with TestLoggingHelper for Serilog test configuration
Joseph Doherty