- Add platform translation keys to all locale files (en, fr, de, lb)
- Integrate language selector in platform base template header
- Translate homepage-wizamart.html (hero, pricing, addons, find-shop, CTA)
- Translate pricing.html, find-shop.html, signup-success.html
- Add i18n context to platform routes via get_jinja2_globals()
- Support variable interpolation for trial_days, count parameters
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>