feat(docs): add static generation and search indexes

docs/src/lib/router.tsx

@@ -0,0 +1,21 @@
+import { createContext, useContext, type ReactNode } from "react"
+
+const PathnameContext = createContext("/")
+
+export function PathnameProvider({
+  children,
+  pathname,
+}: {
+  children: ReactNode
+  pathname: string
+}) {
+  return (
+    <PathnameContext.Provider value={pathname}>
+      {children}
+    </PathnameContext.Provider>
+  )
+}
+
+export function usePathname() {
+  return useContext(PathnameContext)
+}