Module events 

Polydat compiler diagnostic event stream.

The compiler emits typed events for each step: parsing, binding resolution, module inlining, type adaptation, constant folding, fusion, and compilation level selection.

Events are tagged with severity levels:

• Info: normal compilation steps (parsed, resolved, folded)
• Advisory: type coercions, widenings, and implicit conversions that the user should be aware of for module design quality
• Warning: potential performance or correctness issues
• Error: compilation failures (surfaced as Result::Err, not events)

Structs

CompileEventLog

Collects diagnostic events during compilation.

Enums

CompileEvent

A diagnostic event from the Polydat compilation pipeline.

EventLevel

Severity level for compiler diagnostic events.