fix: improve platform homepage pricing UI and restore footer links

- Fix toggle button alignment with consistent min-widths
- Add € currency signs to all prices
- Show all tier features with greyed unavailable ones
- Add multi-channel integration feature for Enterprise tier
- Change Contact Sales to mailto link (fixes 404)
- Restore footer CMS page links (About, FAQ, Contact)
- Add footer link translations for all 4 languages

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

app/routes/platform_pages.py

@@ -32,6 +32,10 @@ def get_platform_context(request: Request, db: Session) -> dict:
     # Get language from request state (set by middleware)
     language = getattr(request.state, "language", "fr")
 
+    # Get translation function
+    i18n_globals = get_jinja2_globals(language)
+    t = i18n_globals["t"]
+
     context = {
         "request": request,
         "platform_name": "Wizamart",
@@ -41,7 +45,14 @@ def get_platform_context(request: Request, db: Session) -> dict:
     }
 
     # Add i18n globals (_, t, current_language, SUPPORTED_LANGUAGES, etc.)
-    context.update(get_jinja2_globals(language))
+    context.update(i18n_globals)
+
+    # Add footer CMS pages
+    context["footer_pages"] = [
+        {"slug": "about", "title": t("platform.footer.about")},
+        {"slug": "faq", "title": t("platform.footer.faq")},
+        {"slug": "contact", "title": t("platform.footer.contact_us")},
+    ]
 
     return context