[FEATURE]:Please add different languages

[594ppx]

Feature hasn't been suggested before.

• I have verified this feature I'm about to request hasn't been suggested before.

Describe the enhancement you want to request

OpenCode's interface, keybinding hints, and error messages are currently all in English. For developers who are not native English speakers—especially when under pressure or debugging—this language friction significantly reduces efficiency and increases cognitive load.

[github-actions]

This issue might be a duplicate of existing issues. Please check:

• [FEATURE]: i18n / Locale support (Portuguese and other languages) #35831: i18n / Locale support (Portuguese and other languages) — covers the same request for multi-language UI support; also notes that i18n infrastructure already exists
• [FEATURE]: i18n support for TUI (terminal interface) #37216: i18n support for TUI (terminal interface) — specifically covers localizing the terminal interface strings, error messages, and keybinding hints
• [FEATURE]: Add Vietnamese language #29309: Add Vietnamese language support
• [FEATURE]: Indonesian (Bahasa) language support #32553: Indonesian (Bahasa) language support
• [FEATURE]: Add Bengali (বাংলা) language support for the UI #34593: Add Bengali language support for the UI

Please review these existing issues before proceeding. If your request is specifically about a language not covered there, consider contributing to one of those threads or clarifying what's new here.

For keybind-related issues, please also check our pinned keybinds documentation: #4997

[594ppx]

Sorry,I'm Chinese.I'm not very good at English so I mostly use AI tools to translate.
Many of my friends need to study the text for over 1 day to know how to use opencode claerly.But they can learn to use other AI tools with Chinese UI,like qwencode in a short time(but I think opencode is better so I use it).
Next,please reduce the RAM consumption.OpenCode, being a local AI coding assistant, can consume significant system memory during operation—especially when handling long conversations, large codebases, or complex tasks. This becomes problematic for developers with limited RAM (e.g., 8GB or less), leading to system slowdowns, freezes, or even crashes.