- Replace manual array key parsing with direct Node\Scalar\Int_ creation
- Route all destructuring assignments through parseAssignFinally for proper type handling
- Remove redundant left expression type detection in assignment operations
- Fix argument index mapping in CallArgumentGenerator to use source indices correctly
- Restore outer context before closure reference validation to prevent type conflicts
- Remove unused local variable promotion logic in foreach reference binding
- Add explicit error messages for native variable reference capture attempts
- Track foreach target variables in SSA optimizer for proper type analysis
- Use numeric indices instead of case labels in switch statement generation
- Add comprehensive tests for varint type handling in foreach loops
