Summary

• Audit PR-7 scoped `pricing/sections/` + `expert-modal` for i18n. After investigation, the `sections/` files are dead clone artifacts (no callers); the live pricing components (`pricing-header`, `pricing-cards`, `compare-plans`, `pricing-faqs`, `enterprise-section`) are already i18n-complete. Real scope reduces to two live components.
• Adds 17 keys to `expert.*` namespace covering project types (5), budgets (4), timelines (4), and the two billing-toggle aria-labels — Arabic translations for all.

Changes

• `src/components/internationalization/{en,ar}.json` — `expert.{projectTypes,budgets,timelines,toggleMonthlyAria,toggleYearlyAria}`
• `src/components/marketing/expert-modal.tsx` — replace 13 hardcoded SelectItem children with `t.expert.*` lookups
• `src/components/marketing/pricing/billing-toggle.tsx` — replace 2 hardcoded aria-labels

Test plan

• /ar — open expert modal (via vedio-card CTA) → all dropdowns translate
• /ar/pricing — billing toggle aria-labels read in Arabic for screen readers
• /en/pricing — visually unchanged
• `pnpm tsc --noEmit` — no new errors

Out of scope

• Pricing dead-code cleanup (delete `sections/*`, `pricing-faq.tsx`, `newsletter-form.tsx`)
• Class 1 dead imports in pricing components — separate PR
• Service component alt text + chatbot button titles + mode-switcher — PR-7b

Closes #19

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