feat(i18n): add multilingual wiki scaffolding, language switcher, and… (#212)

* feat(i18n): add multilingual wiki scaffolding, language switcher, and translation QA pipeline

* docs(readme): adopt picoclaw-style multilingual link bar

* fix(i18n): repair localized index links and tighten partial-pair QA

* ci(i18n): fail on broken markdown links in README/wiki

* ci(i18n): add changed-files mode for markdown link checks

* i18n(de): use local Argos MT to fill untranslated German sections

* i18n(es,fr): fill untranslated sections via local Argos workflow

* i18n(ja): fill untranslated sections with scoped local Argos pass

* i18n(ko): fill untranslated sections with scoped local Argos pass

* fix(i18n): address review feedback

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Co-authored-by: David Abutbul <David.a@prompt.security>

wiki/INDEX.md

@@ -11,7 +11,15 @@
 - [Overview](overview.md)
 - [Architecture](architecture.md)
 
+## Translations
+- [Español](es/INDEX.md)
+- [한국어](ko/INDEX.md)
+- [Français (draft scaffold)](fr/INDEX.md)
+- [Deutsch (draft scaffold)](de/INDEX.md)
+- [日本語 (draft scaffold)](ja/INDEX.md)
+
 ## Guides
+- [Localization Workflow](localization.md)
 - [Dependencies](dependencies.md)
 - [Data Flow](data-flow.md)
 - [Configuration](configuration.md)