Implements the exhaustiveness algorithm to detect non-exhaustive pattern matches:
- Detects missing Bool patterns (true/false)
- Detects missing Option patterns (Some/None)
- Detects missing Result patterns (Ok/Err)
- Recognizes wildcards and variable patterns as catch-alls
- Warns about redundant patterns after catch-all patterns
- Integrates with the type checker to report errors
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
