M14: Italian catalog: complete the missing entries (#2320)

* M14: Italian catalog: complete the missing entries

it.tsv lacked 265 keys that the other catalogs carry. The 201 the code
looks up are added in one dated section at the end of the catalog: the
sentences the accessibility checker, preflight, signature validation and
page-range parser word (their WORDINGS), the certificate rows and calendar
weekday and month labels (their tl_ctx contexts), digital-ID, docking and
print messages, and five plurals (one|other). Italian now has 2,528
entries.

The new rows follow the wording the catalog already uses: history labels
say "Modifica ..." like "Change {key}", and the Creator and Producer keys
that label fills in say "Applicazione" and "Produttore PDF", as the
Document Properties dialog names those fields. The Optimize PDF summary
says "eliminato" like its Discard options, the checker and preflight
sentences say "ha rilevato" and "Viene usato", the trust messages say
"nel tuo elenco di certificati attendibili", the password and certificate
rows say "non corrispondono" and "rilasciato" like the existing "The
passwords don't match." and "Issued by" rows, and the print hint quotes
the "Disattivato" option as the dialog shows it.

The other 64 are left out because no non-test code looks them up:
- 10 tooltip texts with a fixed macOS shortcut ("Zoom in (⌘+)"); the code
  fills the shortcut in through "{key}" rows Italian already has;
- 9 older wordings the code no longer uses: the five Combine folder
  messages, "Save (M4)", " on page {label}", the owner-only security
  message and the old "Text recognition isn't installed" message (the
  code now says "its model files are missing");
- 45 generic labels and plurals only the Lithuanian catalog has. The code
  says "{n} file|{n} files" as two plain strings, "1 file" and
  "{n} files", which Italian has; "{n} comment|..." and "{n} result|..."
  are used nowhere.

The entries are AI-assisted translations written from the meaning of the
English (clean-room; no proprietary localisation consulted), and keep
their placeholders and trailing ellipsis. The catalog's SHA-256 in
ATTRIBUTION.toml is updated by hand, as the other catalog changes do.
localization-parity.md, the ROADMAP progress log, the M14 rows of
docs/roadmap.md and docs/localization.md record the new count, and
parity/acrobat-features.toml now says Italian translates the engine's
sentences too.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* Refresh catalog hashes after merging main

---------

Co-authored-by: kcobelli-pixel <257471167+kcobelli-pixel@users.noreply.github.com>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Co-authored-by: Brandon Thomas <echelon@gmail.com>

docs/localization.md

@@ -15,6 +15,8 @@ The control channel exposes the setting through `ui.set`:
 The value is `auto` or a language code (`en`, `ja`, `zh-hans`, `zh-hant`, `cs`, `pt-br`, `de`, `es`, `fr`, `ru`, `kk`, `bg`, `te`, `hu`, `uk`, `it`, `ar`, `pl`, `sl`, `el`, `tr`, `lt` or `vi`), in any case. `ui.state` reports `language` as written in the preferences (`auto`, `en`, `ja`, `zh-hans`, `zh-hant`, `cs`, `pt-br`, `de`, `es`, `fr`, `ru`, `kk`, `bg`, `te`, `hu`, `uk`, `it`, `ar`, `pl`, `sl`, `el`, `tr`, `lt` or `vi`). Unknown values return an error without changing the current setting. Preferences saved before this setting existed follow the system language.
 
 Dialogs, panels, menus, notices and history labels go through the catalog (`tl!`). Most shipped catalogs (Japanese, Chinese, Russian, Bulgarian, German, Spanish, French, Telugu, Hungarian, Ukrainian, Italian, Brazilian Portuguese, Arabic, Slovenian, Kazakh, Polish, Greek, Turkish, Lithuanian, Vietnamese and others) cover the current localizable surface (about 2,000–2,600 entries each); Czech still covers mainly the menus. Untranslated labels use English. Error details that come from the engine or the operating system are shown as they are, inside a translated frame ("操作「…」に失敗しました: …"). The command palette matches the translated label, the English label and the command id. Vertical Japanese PDF rendering is an existing viewer feature; this change does not add vertical text editing. Document contents, filenames, CLI/MCP/control protocol strings and external help stay outside the catalog. Per-language coverage, script support and what each language still needs are in [localization-parity.md](localization-parity.md).
+Dialogs, panels, menus, notices and history labels go through the catalog (`tl!`). Japanese, Traditional Chinese, Simplified Chinese, Russian, Bulgarian, German, Spanish, French, Telugu, Hungarian, Ukrainian, Brazilian Portuguese and Arabic translate them (about 2,000–2,140 entries each), and Italian has 2,528 entries; Czech and Turkish cover the menus so far. Untranslated labels use English. Error details that come from the engine or the operating system are shown as they are, inside a translated frame ("操作「…」に失敗しました: …"). The command palette matches the translated label, the English label and the command id. Vertical Japanese PDF rendering is an existing viewer feature; this change does not add vertical text editing. Per-language coverage, script support and what each language still needs are in [localization-parity.md](localization-parity.md).
+Dialogs, panels, menus, notices and history labels go through the catalog (`tl!`). Japanese, Traditional Chinese, Simplified Chinese, Russian, Bulgarian, German, Spanish, French, Telugu, Hungarian, Ukrainian, Brazilian Portuguese, Arabic and Slovenian translate them (about 2,000–2,190 entries each), and Italian has 2,528 entries; Czech covers the menus so far. Untranslated labels use English. Error details that come from the engine or the operating system are shown as they are, inside a translated frame ("操作「…」に失敗しました: …"). The command palette matches the translated label, the English label and the command id. Vertical Japanese PDF rendering is an existing viewer feature; this change does not add vertical text editing. Per-language coverage, script support and what each language still needs are in [localization-parity.md](localization-parity.md).
 
 Whole sentences that the layers below word — what the accessibility checker found, what the PDF/A verifier reports, what a signature's details say, what is wrong with the pages to print, what an edit is called in the history — are translated too, because those layers hand the sentence over apart from the document's own words. See [Sentences the engine words](#sentences-the-engine-words).