Minimalist 1v1 competitive coding dashboard built with React, Tailwind, and Firebase.

1. Install dependencies:
   • npm install
2. Create a .env file in the project root and add:

VITE_FIREBASE_API_KEY=your_api_key
VITE_FIREBASE_AUTH_DOMAIN=your_project.firebaseapp.com
VITE_FIREBASE_PROJECT_ID=your_project_id
VITE_FIREBASE_APP_ID=your_app_id
VITE_ALLOWED_UIDS=first_uid,second_uid
VITE_CHALLENGE_EDITOR_UIDS=first_uid

3. Start the app:
   • npm run dev

• Sign-in uses Firebase Auth (Google popup).
• Dashboard access is restricted to UIDs listed in VITE_ALLOWED_UIDS.
• Signed-in but unauthorized users see a restricted-access card and can sign out.

Use these collections and fields:

• users/{uid}:
  • uid: string
  • name: string
  • avatar: string
  • streak: number
  • lastCompletedDate: string (optional, YYYY-MM-DD)
• challenges/{YYYY-MM-DD}:
  • date: string (same as document ID)
  • title: string
  • problemLink: string
  • playerAId: string
  • playerBId: string
• results/{challengeId_userId}:
  • challengeId: string
  • userId: string
  • runtime: number
  • memory: number
  • completedAt: string
• progress/{challengeId_userId}:
  • challengeId: string
  • userId: string
  • completedAt: string

The repo includes server-side Firestore rules in firestore.rules that enforce:

• only participant users can access data
• a player can always read their own result
• opponent result is readable only after both players submitted

Deploy with Firebase CLI:

• firebase deploy --only firestore:rules

• Open the Challenge Admin card.
• Set a start date in Blind 75 Scheduler.
• Click Schedule Blind 75 (Next 75 Days).

This bulk-writes one challenge per day into challenges/{YYYY-MM-DD} using a curated 75-problem list.