Add quick start guide for end-users

QUICK_START.md

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+# 🚀 SAP Finance Dashboard - Quick Setup Guide
+
+## ✅ Status: Live & Ready!
+
+Your SAP Finance Dashboard is **fully deployed** on Hugging Face Spaces at:
+### 🔗 https://huggingface.co/spaces/amitgpt/sap-finance-dashboard-RPT-1-OSS
+
+---
+
+## 🔐 One Final Step: Enable Model Features (5 minutes)
+
+The dashboard is **fully functional** but needs your HF authentication to use AI prediction features.
+
+### Quick Setup (3 clicks):
+
+#### Step 1️⃣: Accept Model Access
+- Go to: https://huggingface.co/SAP/sap-rpt-1-oss
+- Click the blue **"Agree"** button
+- ✓ Done
+
+#### Step 2️⃣: Create Access Token
+- Visit: https://huggingface.co/settings/tokens
+- Click **"New token"**
+- Name: `sap-rpt-oss-access`
+- Type: **"Read"**
+- Click **"Create token"**
+- 📋 Copy the token (long string starting with `hf_`)
+
+#### Step 3️⃣: Add to Your Space
+- Go to your Space: https://huggingface.co/spaces/amitgpt/sap-finance-dashboard-RPT-1-OSS
+- Click **⚙ Settings** (top right)
+- Find **"Repository secrets"**
+- Click **"Add secret"**
+  - Name: `HF_TOKEN`
+  - Value: Paste your token
+- Click **"Add secret"**
+- Wait 1-2 minutes for rebuild
+
+#### ✨ Done!
+When the rebuild finishes, refresh the Space and all features work!
+
+---
+
+## 📚 What Each Tab Does
+
+| Tab | Function | Status |
+|-----|----------|--------|
+| **Dashboard** | Financial metrics & charts | ✅ Works |
+| **Data Explorer** | Browse datasets | ✅ Works |
+| **Upload** | Upload custom data | ✅ Works |
+| **OData** | Connect to SAP systems | ✅ Works |
+| **Predictions** | AI-powered forecasts | ⏳ Needs HF token |
+| **Playground** | Train & test models | ⏳ Needs HF token |
+
+---
+
+## 🛠️ How the Auth Works
+
+1. You set `HF_TOKEN` in HF Spaces secrets
+2. Space rebuilds with token available
+3. Your app automatically logs in to Hugging Face
+4. Model downloads from gated repository
+5. Model cached for fast access
+
+**Your token is ONLY used to download the model. No data is uploaded.**
+
+---
+
+## ❓ Troubleshooting
+
+| Problem | Solution |
+|---------|----------|
+| Still see 401 error | Wait 2+ min for rebuild, refresh browser |
+| "HF_TOKEN not found" | Check secret name is exactly `HF_TOKEN` (case-sensitive) |
+| Model still won't load | Verify you clicked "Agree" on model page |
+| Old app still showing | Hard refresh: Ctrl+Shift+R (or Cmd+Shift+R on Mac) |
+
+---
+
+## 📖 Full Documentation
+
+For detailed setup, troubleshooting, and security info:
+- See: `HF_AUTHENTICATION_SETUP.md` in the repo
+
+---
+
+## 🎉 That's It!
+
+Your SAP Finance Dashboard is ready. With one authentication token, you'll unlock full AI functionality.
+
+**Questions?** Check the troubleshooting section or read `HF_AUTHENTICATION_SETUP.md` for detailed guidance.
+
+---
+
+*Powered by Gradio • HuggingFace Spaces • SAP-RPT-1-OSS*