Compile-Time Diagnostics

The generator produces the following diagnostics:

Code	Severity	Description
LSMITH001	Error	Placeholder {name} in message template has no matching parameter.
LSMITH002	Warning	Parameter is not referenced in the message template and is not a special type (Exception, caller info, ILogSink).
LSMITH003	Error	Log method must be static partial in a partial class.
LSMITH004	Error	Parameter type does not implement IUtf8SpanFormattable, ISpanFormattable, IFormattable, or ToString().
LSMITH005	Warning	Parameter has a [Caller*] attribute and also appears in the message template. Caller attribute takes priority.
LSMITH006	Warning	:json format specifier on primitive type is unnecessary — prefer default formatting.
LSMITH007	Warning	Both SampleRate and MaxPerSecond are set on the same method. SampleRate is applied first.
LSMITH008	Warning	ILogSink explicit sink parameter in abstraction mode — use ILogsmithLogger instead.
LSMITH010	Warning	LogsmithMode is Standalone or Abstraction but PrivateAssets="all" is missing on the Logsmith package reference.