overhaul complete

frontend/src/hooks/useRecentRepos.ts

@@ -0,0 +1,30 @@
+import { useCallback } from 'react'
+
+export interface RecentRepo {
+  ownerName: string
+  name: string
+  visitedAt: number
+}
+
+const KEY = 'fb_recent_repos'
+const MAX = 5
+
+function read(): RecentRepo[] {
+  try {
+    return JSON.parse(localStorage.getItem(KEY) ?? '[]')
+  } catch {
+    return []
+  }
+}
+
+export function useRecentRepos() {
+  const repos = read()
+
+  const track = useCallback((ownerName: string, name: string) => {
+    const existing = read().filter(r => !(r.ownerName === ownerName && r.name === name))
+    const updated: RecentRepo[] = [{ ownerName, name, visitedAt: Date.now() }, ...existing].slice(0, MAX)
+    localStorage.setItem(KEY, JSON.stringify(updated))
+  }, [])
+
+  return { repos, track }
+}