- Fix match arms with identical bodies by consolidating patterns
- Fix case-insensitive file extension comparisons using eq_ignore_ascii_case
- Fix unnecessary Debug formatting in log/format macros
- Fix clone_from usage instead of clone assignment
- Fix let...else patterns where appropriate
- Fix format! append to String using write! macro
- Fix unwrap_or with function calls to use unwrap_or_else
- Add missing fields to manual Debug implementations
- Fix duplicate code in if blocks
- Add type aliases for complex types
- Rename struct fields to avoid common prefixes
- Various other clippy warning fixes
Note: Some 'unused async' warnings remain for functions that are
called with .await but don't contain await internally - these are
kept async for API compatibility.
Replace emoji icons with plain text/ASCII equivalents to prevent
encoding issues and improve console compatibility:
- Replace checkmarks with *
- Replace x marks with x
- Replace status indicators with text [OK], [ERR], etc.
- Remove decorative emojis from info/debug log messages
- Keep functional emojis in user-facing chat/sentiment features
