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Fix i18n localization#18508

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steipete merged 11 commits into
openclaw:mainfrom
jadilson12:fix-i18n-localization
Feb 16, 2026
Merged

Fix i18n localization#18508
steipete merged 11 commits into
openclaw:mainfrom
jadilson12:fix-i18n-localization

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@jadilson12

@jadilson12 jadilson12 commented Feb 16, 2026

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## Summary

Describe the problem and fix in 2–5 bullets:

- Problem: The language selector in the UI was hardcoded (not localized), and stored locale values were not validated, potentially causing silent failures
- Why it matters: An inconsistent i18n implementation breaks the user experience when switching languages, and invalid locale values could cause the UI to fail silently
- What changed: Added translation keys for the language selector (label + option names), added locale validation in the app constructor, and added missing translations for the `agents` and `usage` tabs across all locales
- What did NOT change (scope boundary): No changes to the i18n core logic, translation loading mechanism, or locale detection; only UI integration and validation were fixed


## Change Type (select all)

- [x] Bug fix
- [ ] Feature
- [ ] Refactor
- [ ] Docs
- [ ] Security hardening
- [ ] Chore/infra


## Scope (select all touched areas)

- [ ] Gateway / orchestration
- [ ] Skills / tool execution
- [ ] Auth / tokens
- [ ] Memory / storage
- [ ] Integrations
- [ ] API / contracts
- [x] UI / DX
- [ ] CI/CD / infra


## Linked Issue/PR

- Related #10657 (addresses code review feedback)


## User-visible / Behavior Changes

- The language selector label and language names now update when switching locales (previously they were always in English)
- Invalid stored locale values are now silently ignored instead of potentially causing errors
- Added support for the newly introduced `agents` and `usage` tabs in all supported languages (en, pt-BR, zh-CN, zh-TW)


## Security Impact (required)

- New permissions/capabilities? No
- Secrets/tokens handling changed? No
- New/changed network calls? No
- Command/tool execution surface changed? No
- Data access scope changed? No


## Repro + Verification

### Environment

- OS: macOS (Darwin 25.3.0)
- Runtime/container: Node.js with pnpm
- Model/provider: N/A (UI-only changes)
- Integration/channel (if any): Control UI
- Relevant config (redacted): N/A


### Steps

1. Open the Control UI and navigate to the Overview tab
2. Select a non-English language from the language selector
3. Observe that the language selector label and option names update to the selected language
4. Store an invalid locale value in localStorage and refresh
5. Verify that the UI loads with the default locale without errors


### Expected

- Language selector UI elements are localized
- Invalid locale values do not cause errors


### Actual

- All language selector elements are properly localized
- Invalid locale values are validated and ignored


## Evidence

Attach at least one:

- [x] Failing test/log before + passing after
- [ ] Trace/log snippets
- [ ] Screenshot/recording
- [ ] Perf numbers (if relevant)

Evidence:
- Build passes: `pnpm build` completes successfully
- All locale files updated with a consistent structure
- Code review feedback from Greptile addressed


## Human Verification (required)

What you personally verified (not just CI), and how:

- Verified scenarios:
  - Build completes without errors
  - All locale files have a consistent structure
  - Translation keys properly added for all languages
  - Locale validation logic correctly filters invalid values

- Edge cases checked:
  - Missing locale translations (added for agents/usage tabs)
  - Invalid locale values in storage
  - Rebased on latest main (resolved merge conflicts)

- What you did not verify:
  - Runtime testing in the browser (no local gateway running)
  - Visual verification of translation accuracy in all languages
  - Performance impact of locale validation


## Compatibility / Migration

- Backward compatible? Yes
- Config/env changes? No
- Migration needed? No


## Failure Recovery (if this breaks)

- How to disable/revert this change quickly: Revert the commits or restore the files from the previous commit
- Files/config to restore:
  - ui/src/i18n/locales/*.ts (all locale files)
  - ui/src/ui/app.ts
  - ui/src/ui/views/overview.ts
- Known bad symptoms reviewers should watch for:
  - Language selector not displaying properly
  - UI failing to load with specific locale values
  - Missing translations for tabs


## Risks and Mitigations

- Risk: Translations might not be accurate for non-English languages (especially Chinese translations)
  - Mitigation: Native speakers should review translations; all technical terms were kept consistent with the original PR

- Risk: Locale validation might be too strict and reject valid future locales
  - Mitigation: Validation uses an explicit allowlist matching the supported locales and is easy to extend when adding new languages


This PR template is complete and ready for use. It documents all changes made, including code review fixes and the rebase.

Greptile Summary

This PR adds a full i18n system to the OpenClaw Control UI using a custom I18nManager with lazy-loaded locale bundles (en, zh-CN, zh-TW, pt-BR), a Lit reactive controller for automatic re-renders, and replaces hardcoded English strings across the navigation, overview, and chat views with translation function calls.

  • Build-breaking bug: overview.ts imports formatAgo and formatDurationMs from ../format, but these functions don't exist — the actual exports are formatRelativeTimestamp and formatDurationHuman. This will cause a compilation/import error.
  • Behavioral regression: The trusted-proxy auth mode handling (authMode / isTrustedProxy logic) was removed from the overview page, meaning gateways using trusted-proxy auth will now show unnecessary token/password fields.
  • Dual locale storage: The locale is stored in two separate localStorage keys ("openclaw.i18n.locale" by I18nManager and "locale" in UiSettings), which could get out of sync in edge cases. Consider consolidating to a single source of truth.
  • Minor: Nav group labels changed from capitalized to lowercase (for i18n key lookup), which will silently reset persisted navGroupsCollapsed preferences for existing users.

Confidence Score: 1/5

  • This PR has a build-breaking import error in overview.ts and a functional regression (trusted-proxy auth handling removed); it should not be merged as-is.
  • Score of 1 reflects two critical issues: (1) overview.ts imports formatAgo/formatDurationMs which don't exist in format.ts, causing a guaranteed build failure; (2) the removal of trusted-proxy auth mode handling is an unmentioned behavioral change that breaks the expected UX for that gateway configuration. The i18n architecture itself is reasonable but the dual-storage pattern is fragile.
  • ui/src/ui/views/overview.ts needs immediate attention for the broken imports and the removed trusted-proxy logic. ui/src/i18n/lib/translate.ts should be reviewed for the dual-storage concern.

Last reviewed commit: 2c83cb4

(2/5) Greptile learns from your feedback when you react with thumbs up/down!

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15 files reviewed, 3 comments

Edit Code Review Agent Settings | Greptile

Comment thread ui/src/ui/views/overview.ts Outdated
import { formatNextRun } from "../presenter.ts";
import type { GatewayHelloOk } from "../gateway";
import type { UiSettings } from "../storage";
import { formatAgo, formatDurationMs } from "../format";

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Build-breaking import of non-existent functions

formatAgo and formatDurationMs are not exported from ../format. The actual exports are formatRelativeTimestamp and formatDurationHuman (see ui/src/ui/format.ts lines 1–5). This will cause a TypeScript compilation error or a runtime import failure.

Suggested change
import { formatAgo, formatDurationMs } from "../format";
import { formatRelativeTimestamp, formatDurationHuman } from "../format";

You'll also need to update the usages on lines 30 and 212:

  • formatDurationMs(...)formatDurationHuman(...)
  • formatAgo(...)formatRelativeTimestamp(...)
Prompt To Fix With AI
This is a comment left during a code review.
Path: ui/src/ui/views/overview.ts
Line: 4:4

Comment:
**Build-breaking import of non-existent functions**

`formatAgo` and `formatDurationMs` are not exported from `../format`. The actual exports are `formatRelativeTimestamp` and `formatDurationHuman` (see `ui/src/ui/format.ts` lines 1–5). This will cause a TypeScript compilation error or a runtime import failure.

```suggestion
import { formatRelativeTimestamp, formatDurationHuman } from "../format";
```

You'll also need to update the usages on lines 30 and 212:
- `formatDurationMs(...)``formatDurationHuman(...)`
- `formatAgo(...)``formatRelativeTimestamp(...)`

How can I resolve this? If you propose a fix, please make it concise.

Comment on lines 26 to 29
export function renderOverview(props: OverviewProps) {
const snapshot = props.hello?.snapshot as
| {
uptimeMs?: number;
policy?: { tickIntervalMs?: number };
authMode?: "none" | "token" | "password" | "trusted-proxy";
}
| { uptimeMs?: number; policy?: { tickIntervalMs?: number } }
| undefined;

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Removal of authMode / trusted-proxy logic is a behavioral regression

The base version of this file read snapshot?.authMode and used isTrustedProxy to conditionally hide the token/password fields and show "Authenticated via trusted proxy." in the hint text. This PR removed that logic entirely (the authMode field was dropped from the type assertion and the conditional rendering around token/password fields was flattened).

This means gateways using trusted-proxy auth mode will now unnecessarily show token and password fields, and the "Authenticated via trusted proxy." message is replaced with a generic "Click Connect to apply connection changes." hint.

If this was intentional, it should be noted in the PR description. If not, the trusted-proxy handling should be preserved.

Prompt To Fix With AI
This is a comment left during a code review.
Path: ui/src/ui/views/overview.ts
Line: 26:29

Comment:
**Removal of `authMode` / trusted-proxy logic is a behavioral regression**

The base version of this file read `snapshot?.authMode` and used `isTrustedProxy` to conditionally hide the token/password fields and show "Authenticated via trusted proxy." in the hint text. This PR removed that logic entirely (the `authMode` field was dropped from the type assertion and the conditional rendering around token/password fields was flattened). 

This means gateways using `trusted-proxy` auth mode will now unnecessarily show token and password fields, and the "Authenticated via trusted proxy." message is replaced with a generic "Click Connect to apply connection changes." hint.

If this was intentional, it should be noted in the PR description. If not, the trusted-proxy handling should be preserved.

How can I resolve this? If you propose a fix, please make it concise.

Comment on lines +14 to +29

private loadLocale() {
const saved = localStorage.getItem("openclaw.i18n.locale") as Locale;
if (saved && ["en", "zh-CN", "zh-TW", "pt-BR"].includes(saved)) {
this.locale = saved;
} else {
const navLang = navigator.language;
if (navLang.startsWith("zh")) {
this.locale = navLang === "zh-TW" || navLang === "zh-HK" ? "zh-TW" : "zh-CN";
} else if (navLang.startsWith("pt")) {
this.locale = "pt-BR";
} else {
this.locale = "en";
}
}
}

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Dual locale storage creates potential sync issues

The I18nManager stores locale in localStorage["openclaw.i18n.locale"] (line 59), while UiSettings stores it separately under the "openclaw.control.settings.v1" JSON key. On app startup:

  1. I18nManager singleton is created at module load (line 114) and calls loadLocale(), reading from "openclaw.i18n.locale" or falling back to navigator.language
  2. Then OpenClawApp constructor reads from UiSettings.locale and calls i18n.setLocale()

If only one store is populated (e.g., first-time users who had "openclaw.i18n.locale" set from browser auto-detection but no locale in settings), the UiSettings default of "en" will override the browser-detected locale.

Consider using a single source of truth for the stored locale rather than keeping two separate localStorage entries in sync.

Prompt To Fix With AI
This is a comment left during a code review.
Path: ui/src/i18n/lib/translate.ts
Line: 14:29

Comment:
**Dual locale storage creates potential sync issues**

The `I18nManager` stores locale in `localStorage["openclaw.i18n.locale"]` (line 59), while `UiSettings` stores it separately under the `"openclaw.control.settings.v1"` JSON key. On app startup:

1. `I18nManager` singleton is created at module load (line 114) and calls `loadLocale()`, reading from `"openclaw.i18n.locale"` or falling back to `navigator.language`
2. Then `OpenClawApp` constructor reads from `UiSettings.locale` and calls `i18n.setLocale()`

If only one store is populated (e.g., first-time users who had `"openclaw.i18n.locale"` set from browser auto-detection but no `locale` in settings), the UiSettings default of `"en"` will override the browser-detected locale.

Consider using a single source of truth for the stored locale rather than keeping two separate localStorage entries in sync.

How can I resolve this? If you propose a fix, please make it concise.

CJWTRUST and others added 11 commits February 16, 2026 17:02
   - Add translation keys for language selector label and language names
   - Update all locale files (en, pt-BR, zh-CN, zh-TW) with:
     - overview.access.language key for selector label
     - languages.* keys for language display names
   - Localize language selector in overview.ts to react to locale changes
   - Add validation for stored locale in app.ts to prevent invalid values
     from causing silent failures in setLocale

   Fixes issues identified in code review:
   - Unlocalized language selector inconsistency
   - Settings locale type drift risk
@jadilson12
jadilson12 force-pushed the fix-i18n-localization branch from 92e657e to d19bc16 Compare February 16, 2026 20:03
@steipete
steipete merged commit 66fc12a into openclaw:main Feb 16, 2026
23 checks passed
Jaejuna added a commit to Jaejuna/openclaw that referenced this pull request Feb 20, 2026
- Add ko-KR.ts with full Korean translations
- Add koKR language entry to all locale files (en, zh-CN, zh-TW, pt-BR)
- Register ko-KR in SUPPORTED_LOCALES and setLocale dynamic import
- Add browser language auto-detection for Korean (navigator.language startsWith 'ko')

Relates to issue openclaw#3460
Related to pr openclaw#18508
@Jaejuna Jaejuna mentioned this pull request Feb 20, 2026
18 tasks
@Jaejuna Jaejuna mentioned this pull request Mar 9, 2026
18 tasks
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3 participants