A short but serious homework — YOUR app passes the cleanliness inspection.

Requirements:

1. gofmt -l . — empty output.
2. go vet ./... — empty output.
3. Every function and variable name is MixedCaps; not a single snake_case.
4. A doc comment above every function and above the Item type (a sentence starting with the name).
5. No unused imports, no unused variables, no "corpse code" (a graveyard of commented-out branches).

To submit: the cleaned file + a transcript of running both commands (two silent lines — the best transcript in the course).

Tip. The app is clean and holds a whole library — a moment to enjoy before the last two technical jumps. Next lesson: recursion — a function that calls itself. We will taste it properly, but let's agree upfront: in Go, loops stay the default tool.