nftui v1.2.0

Added

• Multi-language interface (internationalization / localization). The whole interactive TUI can now render in a language other than English. A small internal nftui/i18n package resolves the interface language once at startup — --lang <code> wins, else the POSIX locale environment (LC_ALL → LC_MESSAGES → LANG, with .codeset / @modifier stripped and C / POSIX meaning English), else English — and looks strings up in per-language JSON catalogs embedded at build time (i18n/locales/*.json) via //go:embed, matched with golang.org/x/text/language. English is the source locale and the fallback for any missing key, so the catalog stays byte-identical to the previous inline strings and existing golden-render tests are unchanged. Hungarian (hu) is the first shipped translation. Everything user-facing in the TUI is localized: the tree and dashboards, the rule / chain / set views, the create / edit dialogs, the full rule editor (tab bar, section headers, field chrome, empty-states), all footers (~77 key descriptions routed through shared action keys), status/feedback lines, and the delete/quit confirmations (whose highlighted mnemonic gained an i/I "yes" alias so Hungarian [I]gen / [N]em actually works). nftables' own vocabulary stays English in every language — attribute names (type / hook / priority / policy, ct state, ip saddr, limit rate, …), verdicts, expression keywords, and any copy-pasteable rule syntax — so what you read still matches what nft accepts. The --lang flag is documented in --help and nftui(1); a new README "Language / localization" section explains detection and scope. --help / --version and the man page themselves are English-only (consumed outside the TUI, and --help is handled before the language is resolved). Catalog key parity between languages is enforced by a unit test.
• Spanish and Brazilian Portuguese translations. Two more interface languages ship alongside Hungarian: Spanish (es) and Brazilian Portuguese (pt-BR) — full 133-key catalogs covering the whole TUI. Any Spanish locale (es_ES, es_MX, …) selects the es catalog; any Portuguese locale (including pt and pt_PT) nearest-matches pt-BR. The delete/quit confirmations' "yes" mnemonic gained an s/S alias so the highlighted [S]í / [N]o and [S]im / [N]ão keys actually work, exactly as the Hungarian i/I alias does. Dialog label columns keep their alignment with the untranslated nft-keyword labels next to them. The language list is updated in --help, both nftui(1) man pages, and both READMEs; catalog parity and the new mnemonics are covered by unit tests.
• Spanish and Brazilian Portuguese documentation. The nftui(1) man page and the README now ship in Spanish and Brazilian Portuguese as well, alongside the English originals and the Hungarian translations: man/es/nftui.1 and man/pt_BR/nftui.1 (fully translated section titles and prose; groff macros, flag names, nft syntax and file paths kept verbatim; install targets /usr/share/man/es/man1/ and /usr/share/man/pt_BR/man1/, so a locale-aware man picks them from $LANG / $LC_MESSAGES), plus README.es.md and README.pt-BR.md (full translations with in-page anchors re-pointed to the translated headings; commands, flags and copy-pasteable syntax stay English). Every README now carries an English · Magyar · Español · Português (BR) language selector, and the man-page install instructions cover all four pages.
• French translation. A fifth interface language: French (fr) — a full 133-key catalog covering the whole TUI, selected with --lang fr or any French locale (fr_FR, fr_CA, …). The delete/quit confirmations' "yes" mnemonic gained an o/O alias so the highlighted [O]ui / [N]on keys actually work, exactly like the Hungarian i/I and the Spanish/Portuguese s/S aliases. Dialog label columns keep their alignment with the untranslated nft-keyword labels next to them. The language list is updated in --help, all four nftui(1) man pages, and all four READMEs; catalog parity and the new mnemonic are covered by unit tests.
• French documentation. The nftui(1) man page and the README also ship in French: man/fr/nftui.1 (fully translated section titles and prose — NOM / SYNOPSIS / DESCRIPTION / OPTIONS / RACCOURCIS CLAVIER / …; groff macros, flag names, nft syntax and file paths kept verbatim; install target /usr/share/man/fr/man1/, so a locale-aware man picks it from $LANG / $LC_MESSAGES) and README.fr.md (a full translation with in-page anchors re-pointed to the translated headings; commands, flags and copy-pasteable syntax stay English). Every README's language selector now lists all five languages, and the man-page install instructions cover all five pages.
• German translation. A sixth interface language: German (de) — a full 133-key catalog covering the whole TUI, selected with --lang de or any German locale (de_DE, de_AT, de_CH, …). The delete/quit confirmations' [J]a / [N]ein mnemonic works via a language-gated j/J alias: unlike the unconditional Hungarian i, Spanish/Portuguese s and French o aliases, j only confirms while German is the active language — in every other language a stray j (vim-down scroll muscle memory) inside a confirm dialog stays inert instead of confirming a delete. Dialog label columns keep their alignment with the untranslated nft-keyword labels next to them. The language list is updated in --help, all five nftui(1) man pages, and all five READMEs; catalog parity, the German mnemonic, and the non-German inertness of j are covered by unit tests.
• German documentation. The nftui(1) man page and the README also ship in German: man/de/nftui.1 (fully translated section titles and prose — BEZEICHNUNG / ÜBERSICHT / BESCHREIBUNG / OPTIONEN / TASTENKÜRZEL / …; groff macros, flag names, nft syntax and file paths kept verbatim; install target /usr/share/man/de/man1/, so a locale-aware man picks it from $LANG / $LC_MESSAGES) and README.de.md (a full translation with in-page anchors re-pointed to the translated headings; commands, flags and copy-pasteable syntax stay English). Every README's language selector now lists all six languages, and the man-page install instructions cover all six pages.
• Italian translation. A seventh interface language: Italian (it) — a full 133-key catalog covering the whole TUI, selected with --lang it or any Italian locale (it_IT, it_CH, …). The delete/quit confirmations' [S]ì / [N]o mnemonic works through the already-shipped unconditional s/S alias (shared with Spanish [S]í and Portuguese [S]im), so no key-handling change was needed. Dialog label columns keep their alignment with the untranslated nft-keyword labels next to them. The language list is updated in --help, all six nftui(1) man pages, and all six READMEs; catalog parity and the Italian mnemonic are covered by unit tests.
• Italian documentation. The nftui(1) man page and the README also ship in Italian: man/it/nftui.1 (fully translated section titles and prose — NOME / SINOSSI / DESCRIZIONE / OPZIONI / SCORCIATOIE DA TASTIERA / …; groff macros, flag names, nft syntax and file paths kept verbatim; install target /usr/share/man/it/man1/, so a locale-aware man picks it from $LANG / $LC_MESSAGES) and README.it.md (a full translation with in-page anchors re-pointed to the translated headings; commands, flags and copy-pasteable syntax stay English). With this, every supported interface language ships its full documentation pair: the language selector in every README lists all seven languages, and the man-page install instructions cover all seven pages.