Module i18n 

ssh-cli internationalization system (Rules Rust multi-idioma).

Provides bilingual Language with Message as the single source of human UI strings. Locale detection / BCP47 negotiation lives in crate::locale.

Design (agent-first one-shot)

• MVP locales: neutral en + pt-BR (100% key parity via exhaustive match).
• Not Fluent FTL at runtime: size-sensitive CLI; compiler-enforced enum translations are the embedded equivalent of i18n-embed for two locales.
• JSON / agent wire: stable English field names and technical crate::errors::SshCliError Display (not locale-dependent).
• Human UX (success/status/cancel lines): always via Message / t.
• Optional top-20 locales: Cargo features i18n-* (stubs until translations land).

Precedence (see crate::locale)

1. CLI --lang → 2. persisted XDG lang (locale set) →
2. sys_locale → 4. Language::English.

SSH_CLI_LANG is historical only — not read as a product store.

Enums

Language

Languages supported by the internationalization system.

Message

All system UI messages.

TextDirection

Text direction for terminal rendering (LTR MVP; RTL reserved for i18n-rtl).

Functions

current_language

Returns the currently configured language.

initialize_language

Initializes i18n by resolving locale (5-layer precedence) and publishing once to the global crate::locale OnceLock.

t

Returns the message string in the current global language.