Features:
- New goswag CLI (cmd/goswag) — `goswag docs` runs the full
  go run + swag init + swag fmt pipeline with sensible defaults and
  auto-detected --pdl. Install with:
    go install github.com/diegoclair/goswag/cmd/goswag@latest

Fixes:
- Handlers with the same short name in different packages no longer
  produce duplicate declarations in the generated goswag.go (build
  failure under monoliths with bounded contexts).