added seeder for legacy apge and added the legacy page

apps/web/app/routes.ts

@@ -5,7 +5,7 @@
 
      /                                 -> 302 to /en or /ar (Accept-Language)
      /:lang                            -> home
-     /:lang/<section>                  -> one of the ten top-level sections
+     /:lang/<section>                  -> one of the eleven top-level sections
      /:lang/<section>/<slug>           -> one entry of a CMS-backed section
      /:lang/events-calendar/<slug>.ics -> that event as an RFC 5545 file
      anything else                     -> 404
@@ -43,7 +43,7 @@
    ROUTE IDS
    ---------
    "root" | "routes/locale-redirect" | "locale" | "routes/not-found", one per
-   section named after its key: "home", "about", "whatWeDo", "activities",
+   section named after its key: "home", "about", "legacy", "whatWeDo", "activities",
    "events", "applications", "news", "contact", "resources", "knowledgeHub" -
    and one per detail route, the section key plus "Detail" ("newsDetail",
    "eventsDetail", ...), plus "eventsIcs". So `useRouteLoaderData("locale")`
@@ -76,6 +76,7 @@ import { ROUTE_SLUGS, type RouteSlugKey } from "./lib/route-slugs";
 const SECTION_MODULES = {
   home: "routes/home.tsx",
   about: "routes/about.tsx",
+  legacy: "routes/legacy.tsx",
   whatWeDo: "routes/what-we-do.tsx",
   activities: "routes/activities-and-initiatives.tsx",
   events: "routes/events-calendar.tsx",
@@ -89,7 +90,7 @@ const SECTION_MODULES = {
 /**
  * Section -> the module that renders ONE entry of it, at
  * `<section slug>/:slug`. Only the six CMS-backed sections have one; "about",
- * "what-we-do", "contact" and the home page are single pages with nothing to
+ * "legacy", "what-we-do", "contact" and the home page are single pages with nothing to
  * drill into.
  */
 const DETAIL_MODULES = {
@@ -117,7 +118,7 @@ const RESOURCE_ROUTES = [
 const detailKeys = Object.keys(DETAIL_MODULES) as (keyof typeof DETAIL_MODULES)[];
 
 /**
- * Every page under ":lang": the ten sections, then the six detail routes, then
+ * Every page under ":lang": the eleven sections, then the six detail routes, then
  * the .ics resource route. Flat on purpose - see "LISTING AND DETAIL ARE
  * SIBLINGS" above.
  */