- Auto-derive operator names from C# token when [Name] is absent
  (+ → add, - → subtract, * → multiply, / → divide, etc.)
- Generate overload dispatcher for operators sharing the same token
  with different parameter types (e.g., Money * bigint vs Money * Money)
- Merge same-path imports into a single line in ImportCollector
- Transpile explicit casts between bigint/Decimal/number types
  (BigInteger ↔ decimal ↔ int conversions)
- Rewrite Math.Round/Floor/Ceiling to Decimal.js instance methods
  when the argument is System.Decimal
- Fix const/let detection for top-level statements (use CompilationUnit
  as scope instead of individual GlobalStatementSyntax)
- Fix hasRootIndex for executables (derive from files, not exports)
- Add SampleOperatorOverloading with Money record struct and 13 TS tests

The top-level statement import fix also affects this sample — program.ts
now imports TodoStore via relative path instead of barrel alias.

- Fix generate script in sample-operator-overloading package.json
- Reuse transformed LHS in compound operator assignment (avoid double eval)
- Restrict Math decimal rewrite to single-argument overloads only
- Update docstring to include Math.Abs in decimal rewrite
- Fix hasRootIndex to check outputPrefix path for subdirectory output
- Strengthen UUID import assertions with regex pattern matching
- Fix CSharpier formatting on Currency.cs