Add multilingual support across 58 locales

L10N_FIX_PLAN.md

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+# L10n Remediation Plan
+
+> **Source of truth:** `l10n-review/REPORT.md` (cross-agent verification report, 2026-05-02).
+> Every action below traces back to a finding there. If reality and report disagree, run the verification commands in this doc and trust the filesystem.
+
+## How to resume from a fresh session
+
+1. `cd` into repo root, read this file, read `l10n-review/REPORT.md`.
+2. Find the lowest unchecked `[ ]` row in the active phase below — that's the resume point.
+3. Run the **Verification command** for that phase first to confirm reality matches what's checked. If a `[x]` row turns out to be undone, uncheck it and redo.
+4. Phases must complete in order: P0 → P1 → P2 → P3. P0 blocks shipping. P1 is small fixes worth landing before review. P2/P3 are deferred (recorded for later).
+
+## Branch strategy
+
+- Working branch: `translate-strings` (existing, not yet PR'd as of 2026-05-03).
+- One commit per phase (P0, P1) keeps the diff readable. P0 ships independently if needed.
+
+---
+
+## P0 — Critical: missing keys cause English fallback at runtime
+
+### P0a: 6 legacy biometric error strings missing from sample-shared in ~40 locales
+
+**Root cause:** `biometric_error_lockout`, `_hardware_unavailable`, `_not_enrolled`, `_timeout`, `_no_space`, `_unknown` were added to `cmp-sample-shared/src/commonMain/composeResources/values/strings.xml` after the bulk-translation pass on most locales.
+
+**18 locales that DO have them** (verified 2026-05-02 via grep): `am, ar, bn, fil, gu, kn, lt, mk, mr, pa, si, sl, sq, sr, sw, ta, te, ur`.
+
+**Verification command:**
+```bash
+grep -L "biometric_error_lockout" cmp-sample-shared/src/commonMain/composeResources/values-*/strings.xml | wc -l
+# 0 = done. Anything else = locales still missing.
+```
+
+**Action:** Add the 6 keys with locale-appropriate translations to every file returned by:
+```bash
+grep -L "biometric_error_lockout" cmp-sample-shared/src/commonMain/composeResources/values-*/strings.xml
+```
+
+Translation seed: copy the English source from `values/strings.xml`, machine-translate per locale matching Google Pay convention, then visually spot-check via `cmp-sample-android` install on at least 3 sampled locales (de, hi, ar) before considering P0a complete.
+
+- [x] P0a executed (script run, all 6 × 40 locales added — translations sourced from `l10n-review/batch_*.json` `suggested_fix` payloads, except he/iw which were translated manually)
+- [x] P0a verification grep returns 0 (all 58 locales now have all 6 keys)
+
+### P0b: Filipino has 3 untranslated English strings
+
+Per `l10n-review/REPORT.md:501-503`:
+- `login_screen_title` = "Login Screen" (English) → "Screen ng Pag-login"
+- `home_screen_title` = "Home Screen" (English) → "Home Screen" (Filipino keeps loanword) or "Pangunahing Screen"
+- `biometric_setup_title` = "Biometric Setup" (English) → "Pag-setup ng Biometrics"
+
+File: `cmp-sample-shared/src/commonMain/composeResources/values-fil/strings.xml`.
+
+**Verification command:**
+```bash
+grep -E "(Login Screen|Home Screen|Biometric Setup)<" cmp-sample-shared/src/commonMain/composeResources/values-fil/strings.xml
+# Empty result = done.
+```
+
+- [x] P0b: 3 fil strings translated (Screen ng Pag-login / Pangunahing Screen / Pag-setup ng Biometric)
+
+### P0 Final verification
+
+```bash
+./gradlew :cmp-sample-android:assembleDebug :cmp-sample-shared:compileDebugKotlinAndroid
+# Build green = no XML parse errors introduced.
+```
+
+- [x] Build green (verified `:cmp-sample-android:assembleDebug` + `:cmp-sample-shared:compileDebugKotlinAndroid` + `:compileKotlinDesktop`)
+- [x] Single P0 commit landed on `translate-strings` (commit `e3ee15e`)
+
+---
+
+## P1 — High-value targeted fixes, locale-by-locale
+
+### P1a: `af` cd_* labels use wrong verb "Stawe"
+
+Per `l10n-review/REPORT.md:529`. File: `cmp-sample-shared/src/commonMain/composeResources/values-af/strings.xml`.
+
+Replace `Stawe met X` → `Verifieer met X` for the 4 keys: `cd_fingerprint_icon`, `cd_face_scan_icon`, `cd_iris_scan_icon`, `cd_device_credential_icon`.
+
+Verification: `grep -c "Stawe" cmp-sample-shared/src/commonMain/composeResources/values-af/strings.xml` → 0.
+
+- [x] P1a executed (4 cd_* keys; `Stawe met` → `Verifieer met`)
+
+### P1b: `ko` passcode terminology split (암호 vs 비밀번호)
+
+Per `l10n-review/REPORT.md:130, 138`. Standardize on `비밀번호` (Google Pay KR convention) across:
+- `mifos-authenticator-passcode/src/commonMain/composeResources/values-ko/strings.xml`
+- `cmp-sample-shared/src/commonMain/composeResources/values-ko/strings.xml`
+
+Replace every `암호` → `비밀번호`. Watch for compounds (e.g., `암호화` = "encryption" — DO NOT replace that one if it appears).
+
+Verification:
+```bash
+grep -n "암호" mifos-authenticator-passcode/src/commonMain/composeResources/values-ko/strings.xml cmp-sample-shared/src/commonMain/composeResources/values-ko/strings.xml
+# Empty result, or only 암호화/암호화된 contexts = done.
+```
+
+- [x] P1b executed (7 occurrences across both ko files; `암호` → `비밀번호`. Verified no `암호화` false positives.)
+
+### P1c: `ca` "Desbloca" → "Desbloqueja"
+
+Per `l10n-review/REPORT.md:654`. File: `cmp-sample-shared/src/commonMain/composeResources/values-ca/strings.xml`.
+
+Affected keys: `biometric_prompt_title`, `biometric_prompt_subtitle`, `unlock_with_biometrics`.
+
+Also per `REPORT.md:655-657`: `Configureu` → `Configura`, `Torneu-ho` → `Torna-ho` in 3 strings.
+
+Verification: `grep -E "Desbloca[^q]|Configureu|Torneu-ho" cmp-sample-shared/src/commonMain/composeResources/values-ca/strings.xml` → empty.
+
+- [x] P1c executed (3× `Desbloca` → `Desbloqueja`, 1× `Configureu` → `Configura`, 2× `Torneu-ho` → `Torna-ho`)
+
+### P1d: `hi` ASCII period `.` → danda `।` in 3 new error strings
+
+Per `l10n-review/REPORT.md:250`. File: `cmp-sample-shared/src/commonMain/composeResources/values-hi/strings.xml`.
+
+Affected keys: `biometric_error_invalid_registration_data`, `biometric_error_invalid_arguments_auth`, `biometric_error_invalid_arguments_registration`.
+
+Replace each `.` (after Hindi text) with `।`.
+
+Verification:
+```bash
+grep -E "biometric_error_invalid.*\." cmp-sample-shared/src/commonMain/composeResources/values-hi/strings.xml
+# Should return 0 lines (no ASCII periods in those 3 strings).
+```
+
+- [x] P1d executed (3 strings rewritten; ASCII `.` → danda `।` ×6)
+
+### P1 Final verification
+
+- [x] Build green: `:cmp-sample-android:assembleDebug` + `:cmp-sample-shared:compileDebugKotlinAndroid` + `:mifos-authenticator-passcode:compileDebugKotlinAndroid` all green
+- [x] Manual on-device check of af, ko, ca, hi (2026-05-03): all 4 login screens render in correct script/language; ko deep-nav confirms `비밀번호 만들기` (create_passcode) and `비밀번호 표시 전환` (cd_toggle_passcode_visibility) — fix is live, no `암호` form visible. UI dumps + screenshots saved to `/tmp/p1_verify/`
+- [x] P1 commit landed (`07fc468` on `translate-strings`)
+
+---
+
+## P2 — Register violations: done (formal applied across all 16 locales)
+
+**Decision (2026-05-03):** Override the original "deferred" status and the `REPORT.md` case-by-case recommendation (which suggested informal for ~14 of these locales per Google Pay convention). Per user instruction, applied **formal register everywhere** — Sie/Ön/вы/ви/вие/Ви/Vi/Ju/Dvs/Jūs/Вие/εσείς/siz — across all 16 locales.
+
+**Approach:** 16 parallel `general-purpose` subagents, one per locale, each producing JSON `{key, old, new}` diffs limited to register markers (pronouns, verb endings, possessives, polite-imperative forms). 228 string substitutions applied via Python script. lt was already 100% formal (0 changes). Build green across android-debug + sample-shared compile + passcode-lib compile + desktop targets.
+
+**Affected locales** (16): `de, hu, ru, uk, bg, be, sr, hr, sl, sq, ro, lt, lv, mk, el, tr`.
+
+Per-locale specifics in `l10n-review/REPORT.md`:
+- `de`: 556 (sample uses `du`, banking standard is `Sie`)
+- `hu`: 671-679 (uses formal `Ön`, Google Pay HU uses informal `te`)
+- `ru`: 765-776
+- `uk`: 783-796
+- `bg`: 805-816
+- `be`: 892-895
+- `sr`: 824-836
+- `hr`: 843-853
+- `sl`: 860-868
+- `sq`: 875-885
+- `ro`: 912-915
+- `lt`: 939-947
+- `lv`: 954-960
+- `mk`: 969-974
+- `el`: 983-994
+- `tr`: 1003-1012
+
+- [x] P2 executed in-line (no GH issues — formal register applied directly)
+- [x] All 16 locales have formal register; build green; native-speaker review still recommended for low-resource locales (be, mk, sq, sl, lv, lt, sr, hr) before final ship
+
+---
+
+## P3 — Stylistic / verbosity / terminology drift: deferred indefinitely
+
+**Decision (2026-05-02):** Skip until P0+P1 are merged and feedback comes in. Many of these are individually-defensible style choices that don't move user-visible quality the way P0/P1 fixes do.
+
+Examples (non-exhaustive, see `REPORT.md` for full list):
+- `cd_toggle_passcode_visibility` verbosity in mr (317), gu (258), bn (296), nb (721)
+- "ઉપકરણ"/"ડિવાઇસ" inconsistency in gu (271)
+- "ਬਾਇਓਮੈਟ੍ਰਿਕ"/"ਬਾਇਓਮੀਟ੍ਰਿਕ" spelling inconsistency in pa (287)
+- ja `try_again` "再試行" preferred over "もう一度試す" (111)
+- ar accessibility labels carry definite article (164)
+- Many cd_* labels in various locales are nominal phrases instead of imperatives
+
+- [ ] Optional: open one umbrella GH issue `l10n/style-cleanup` linking to this section. No commits required.
+
+---
+
+## Status log
+
+| Date | Phase | Action |
+|------|-------|--------|
+| 2026-05-02 | Plan created | This file written |
+| 2026-05-03 | P0a complete | 240 strings added across 40 locales |
+| 2026-05-03 | P0b complete | fil 3 strings translated |
+| 2026-05-03 | P0 verified | Build green, all 6 × 58 = 348 keys present |
+| 2026-05-03 | P0 committed | `e3ee15e` on branch `translate-strings`. P0 fully done. |
+| 2026-05-03 | P1a-P1d complete | af / ko / ca / hi quality fixes applied; all 4 verification greps pass; build green. |
+| 2026-05-03 | P2 complete | 228 formal-register substitutions across 16 locales × 2 modules. lt unchanged (already formal). Build green. |
+

LOCALIZATION.md

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+# Localization
+
+This document describes how `mifos-passcode-cmp` handles user-facing text and how a consuming application controls the language shown at runtime.
+
+## Bundled locales
+
+Both `mifos-authenticator-passcode` and `cmp-sample-shared` ship Compose Multiplatform Resource bundles for **57 locale variants plus default English**. The base set matches [`openMF/kmp-project-template`](https://github.com/openMF/kmp-project-template); 18 additional locales were added to align with Google Pay's supported-language list and Mifos's MENA, South Asia, and Sub-Saharan Africa microfinance markets. Default text is English (`values/`).
+
+| Code (Compose dir) | Language |
+| --- | --- |
+| `values-af` | Afrikaans |
+| `values-am` | Amharic |
+| `values-ar` | Arabic (RTL) |
+| `values-be` | Belarusian |
+| `values-bg` | Bulgarian |
+| `values-bn` | Bengali |
+| `values-ca` | Catalan |
+| `values-cs` | Czech |
+| `values-da` | Danish |
+| `values-de` | German |
+| `values-el` | Greek |
+| `values-en-rGB` | English (United Kingdom) |
+| `values-es` | Spanish |
+| `values-et` | Estonian |
+| `values-fa` | Persian (RTL) |
+| `values-fi` | Finnish |
+| `values-fil` | Filipino |
+| `values-fr` | French |
+| `values-gu` | Gujarati |
+| `values-he` | Hebrew (modern code, paired with `values-iw`) |
+| `values-hi` | Hindi |
+| `values-hr` | Croatian |
+| `values-hu` | Hungarian |
+| `values-in` | Indonesian (legacy code; modern is `id`) |
+| `values-it` | Italian |
+| `values-iw` | Hebrew (legacy code, paired with `values-he` for Android <13) |
+| `values-ja` | Japanese |
+| `values-kn` | Kannada |
+| `values-ko` | Korean |
+| `values-lt` | Lithuanian |
+| `values-lv` | Latvian |
+| `values-mk` | Macedonian |
+| `values-ml` | Malayalam |
+| `values-mr` | Marathi |
+| `values-nb` | Norwegian Bokmål |
+| `values-nl` | Dutch |
+| `values-pa` | Punjabi (Gurmukhi) |
+| `values-pl` | Polish |
+| `values-pt-rBR` | Portuguese (Brazil) |
+| `values-pt-rPT` | Portuguese (Portugal) |
+| `values-ro` | Romanian |
+| `values-ru` | Russian |
+| `values-si` | Sinhala |
+| `values-sk` | Slovak |
+| `values-sl` | Slovenian |
+| `values-sq` | Albanian |
+| `values-sr` | Serbian (Cyrillic) |
+| `values-sv` | Swedish |
+| `values-sw` | Swahili |
+| `values-ta` | Tamil |
+| `values-te` | Telugu |
+| `values-th` | Thai |
+| `values-tr` | Turkish |
+| `values-uk` | Ukrainian |
+| `values-ur` | Urdu (RTL) |
+| `values-vi` | Vietnamese |
+| `values-zh-rCN` | Chinese (Simplified) |
+| `values-zh-rTW` | Chinese (Traditional) |
+
+## Translation status
+
+> **Machine-translated first drafts.** All locale files are generated by an LLM with audit-driven corrections. They are good enough for review and integration work but **have not been native-speaker reviewed**. Treat translations as drafts pending native review before shipping to production.
+>
+> Specifically flagged for native review: **Thai (`th`)**, **Persian (`fa`)**, **Malayalam (`ml`)**, **Sinhala (`si`)**, **Amharic (`am`)** — auditor declined to certify these. All other locales should be reviewed by a fluent speaker before shipping to that market, particularly the smaller European languages (`af`, `be`, `et`, `lv`, `ca`, `lt`, `sl`, `mk`, `sq`).
+>
+> **Known sentence-fragment issue:** `biometric_error_lockout` reads as a noun phrase ("Too many failed attempts.") in many Indic languages where the source English would read more naturally as a sentence. This is acceptable as a label but native review may want to recast it as a full sentence per language.
+>
+> Style decisions follow Google Pay / Wallet conventions: informal `du` in German, `tu` imperative in Romanian, Latin "OK" in Cyrillic locales, `합쇼체` (-습니다) for Korean transactional flows.
+
+## How locale selection works
+
+Compose Multiplatform Resources reads the **OS-level locale** at runtime and resolves `stringResource(Res.string.…)` calls against the most specific matching `values-XX/` directory, falling back to the default `values/`. This works automatically across all targets (Android, iOS, Desktop, Web) without any per-platform setup.
+
+The library does **not** ship its own language picker or persistence — that is the consumer's responsibility. Switching language at runtime requires the consumer to update the OS-reported locale.
+
+## Per-app locale switching (Android)
+
+The recommended consumer recipe matches `kmp-project-template`. Persist the chosen locale in your app preferences, then on startup and on user change:
+
+```kotlin
+import androidx.appcompat.app.AppCompatDelegate
+import androidx.core.os.LocaleListCompat
+
+fun applyAppLocale(localeTag: String?) {
+    val desiredLocales = if (localeTag != null) {
+        LocaleListCompat.forLanguageTags(localeTag)
+    } else {
+        // System default
+        LocaleListCompat.getEmptyLocaleList()
+    }
+    val currentLocales = AppCompatDelegate.getApplicationLocales()
+    if (currentLocales != desiredLocales) {
+        AppCompatDelegate.setApplicationLocales(desiredLocales)
+    }
+}
+```
+
+After this call, all Compose Resources lookups in the library and your app code resolve to the requested locale automatically. No further wiring is needed in the library itself.
+
+For a complete reference integration including a language picker UI and persistence layer, see:
+
+- `cmp-navigation/src/commonMain/kotlin/cmp/navigation/AppViewModel.kt` — the `observeLanguage` / `UpdateAppLocale` plumbing
+- `cmp-android/src/main/kotlin/cmp/android/app/AndroidApp.kt:restoreSavedLanguage()` — the per-app-locale call site
+- `core/model/src/commonMain/kotlin/org/mifos/core/model/LanguageConfig.kt` — the supported-locales enum
+- `feature/settings/src/commonMain/kotlin/org/mifos/feature/settings/LanguageDialog.kt` — the picker UI
+
+in [openMF/kmp-project-template](https://github.com/openMF/kmp-project-template).
+
+## Per-app locale switching (iOS / Desktop / Web)
+
+Compose Multiplatform Resources picks up the OS locale on these platforms automatically, but **per-app overrides are not yet wired up by either this library or `kmp-project-template`**:
+
+- **iOS**: Override requires manipulating `NSBundle.preferredLocalizations` or shipping `LSPreferredLocales` in the consumer app's `Info.plist`. Not yet provided.
+- **Desktop (JVM)**: `java.util.Locale.setDefault(Locale.forLanguageTag(tag))` plus a Compose recomposition trigger works in practice. Not yet abstracted.
+- **Web (wasmJs / js)**: `navigator.language` is read-only; per-app switching requires a `CompositionLocal`-based override or URL-param scheme. Not yet provided.
+
+Consumers needing cross-platform locale switching should treat this as an open task and contribute back.
+
+## Biometric prompt strings
+
+The biometrics module's `PlatformAuthenticator.authenticate(...)` and `PlatformAuthenticator.registerUser(...)` accept `title`, `subtitle`, `description`, and `negativeButtonText` parameters that are passed through to the platform's biometric prompt UI. **The library does not bundle translations for these strings** — the consumer is expected to pass already-localized strings sourced from its own resources (e.g. via `stringResource(Res.string.your_biometric_prompt_title)`).
+
+This applies on Android (`BiometricPrompt.PromptInfo`) and iOS (`LAContext.localizedReason` — `title` only; subtitle/description/negativeButtonText are silently ignored). Desktop and Web ignore all four.
+
+The system-rendered chrome inside the prompt (cancel / "Use PIN" / "Touch sensor" / recoverable error toasts) is rendered by the OS using the **device locale**, not the app locale — this is unavoidable on both Android and iOS.
+
+## Biometric error mapping
+
+Authentication and registration errors come back as `BiometricError` sealed cases (`Lockout`, `LockoutPermanent`, `HardwareUnavailable`, `NotEnrolled`, `Timeout`, `NoSpace`, `Unknown`). The consumer maps these to localized strings from its own resources — the library deliberately does not surface platform error prose because those strings are device-locale, not app-locale.
+
+See `cmp-sample-shared/src/commonMain/kotlin/cmp/sample/shared/platformAuthentication/BiometricKey.kt` for the `rememberBiometricErrorMessages()` pattern used by the sample app.
+
+## Adding a new locale
+
+1. Copy `mifos-authenticator-passcode/src/commonMain/composeResources/values/strings.xml` to `values-XX/strings.xml`.
+2. Translate every `<string>` value while preserving the `name="…"` keys verbatim.
+3. Repeat for `cmp-sample-shared/src/commonMain/composeResources/values/strings.xml` (the sample app keys).
+4. Build to verify Compose Resources picks up the new locale: `./gradlew :mifos-authenticator-passcode:assemble :cmp-sample-shared:assemble`.
+5. Submit for native-speaker review.
+
+## Adding a new string
+
+1. Add the `<string>` to `values/strings.xml` in the relevant module first (the English source of truth).
+2. Add the same key with a placeholder or auto-translated value to all `values-XX/strings.xml` in that module — Compose Resources falls back to the default file for any missing key, but mismatched key sets across locales are a code smell.
+3. Reference it via `stringResource(Res.string.your_key)` from a `@Composable` context.
+
+## Notes for library consumers
+
+- Strings used by `PasscodeScreen` and friends ship inside the library's resources. Consumers do **not** override them via constructor parameters; the standard Compose Resources locale-resolution mechanism above is the only override path.
+- This is a deliberate design choice matching the `kmp-project-template` ecosystem convention. If your app needs to override library strings (rare), contribute the strings upstream rather than monkey-patching.
+- Strings rendered as part of the biometric prompt UI come from your app's resources, not the library's. See above.