feat(ui): internationalize profile, subscription, integrations templates and user menu JS
- Add 155 new translation keys to en.json (common, nav, integrations, profile, subscription sections)
- Add window.__i18n script block to base.html for user menu strings
- Replace all hardcoded English strings in common.js with window.__i18n lookups using safe fallback pattern
- Internationalize profile.html (page title, headings, labels, hints, placeholders, theme options)
- Internationalize subscription.html (page title, plan cards, usage stats, plan actions, badges)
- Internationalize integrations_dashboard.html (header, quota bars, modal, all form fields, action buttons, webhook section, delete modal)
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
copilot-swe-agent[bot]
5a025576c4
