Add Italian translation

[aghyad97]

Adds messages/it.json, a full Italian translation of messages/en.json. Single new file — no registry wiring, no source changes.

Verification

• Key parity: 4577 / 4577 leaf keys, 0 missing, 0 extra, same order as en.json.
• Placeholder parity: 0 mismatches (every {placeholder} preserved byte-for-byte).
• Foreign-script contamination: 0 (Cyrillic, Devanagari, Arabic, Hangul, CJK, Kana, Hebrew, Thai, Greek all zero).
• Invariable-loanword plurals: 0 errors (i file, i server, i browser — no -s). The one grep hit is the {bytes} placeholder name.
• E' instead of È: 0.
• bunx tsc --noEmit clean; bun run test 164 files / 1317 tests passing, unchanged from the pre-branch baseline.

Conventions chosen

• Exclamation marks: en.json has 65 strings ending in !, nearly all success toasts. Italian software does not exclaim on routine confirmations, so all 65 are flat in Italian (Copied! → Copiato). No ! was introduced anywhere the source lacks one — the Italian file has zero strings ending in !.
• Register: bare imperative for buttons and actions (Copia, Scarica, Elimina); impersonal for system messages (Non è stato possibile…, Si è verificato un errore); no tu, no Lei in prose.
• Gender agreement around interpolation: 31 strings were restructured so an interpolated value never governs an adjective, past participle, or article — colon/head-noun constructions ({label} copied → Copiato: {label}, Added {city} → Città aggiunta: {city}). Where the head noun is known, agreement follows that noun instead.
• Terminology: English loanwords kept per settled Italian IT usage (browser, file, server, cache, download, password), no calques. AI used throughout rather than IA (normalized; 0 remaining IA).
• Tool-card name/description use a single register (bare imperative, matching the English) and a single converter naming pattern (Da X a Y).

Worth a native speaker's eye

• Landing.sponsorTile and CoffeeBanner.message keep second-person pitch copy, the only tu forms left; deliberate, but inconsistent with the impersonal prose rule elsewhere.
• Common.pause = Pausa (noun) rather than an imperative — settled media-player idiom, but it breaks the button convention.
• Converter card names were normalized to Da X a Y; X in Y is equally natural Italian if that pattern is preferred.
• Testa used for the tester tools (regex-tester, keyboard-tester, gamepad-tester); Prova may read better on the hardware ones.
• Cluster meta descriptions spell numbers out (Tredici, Diciotto) following the English — confirm that is the intended SEO style.
• Tools.WheelOfNames.winnerLabel = Vincitore: {name} uses a masculine head noun in front of a possibly female name.
• Pre-existing upstream issue, not fixable in the locale file: Tools.LoremIpsumGenerator.maxCount interpolates {type} with a raw English state value (words/sentences/paragraphs) from src/components/LoremIpsumGenerator.tsx, so it renders "Massimo 1000 words" in every locale.

[vercel]

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Project	Deployment	Actions	Updated (UTC)
browserytools	Ready	Preview	Aug 2, 2026 11:11am