docs: refactor README, offload API docs, and implement unique Cyber N…

API_USAGE.md

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+# urBackend API Usage Guide 📖
+
+This guide provides technical examples for interacting with the urBackend API. Once your project is created in the dashboard, use your **Public API Key** (for frontend) or **Secret API Key** (for backend) to make requests.
+
+## Base URL
+
+```
+https://api.urbackend.bitbros.in
+```
+
+## 1. Authentication
+
+Manage users for your own applications using urBackend's built-in auth system.
+
+### Sign Up User
+```javascript
+await fetch('https://api.urbackend.bitbros.in/api/userAuth/signup', {
+  method: 'POST',
+  headers: {
+    'Content-Type': 'application/json',
+    'x-api-key': 'YOUR_API_KEY'
+  },
+  body: JSON.stringify({
+    email: "user@example.com",
+    password: "securePassword123",
+    name: "John Doe" // Optional
+  })
+});
+```
+
+### Login User
+```javascript
+const res = await fetch('https://api.urbackend.bitbros.in/api/userAuth/login', {
+  method: 'POST',
+  headers: {
+    'Content-Type': 'application/json',
+    'x-api-key': 'YOUR_API_KEY'
+  },
+  body: JSON.stringify({
+    email: "user@example.com",
+    password: "securePassword123"
+  })
+});
+const data = await res.json(); // Returns { token: "JWT_TOKEN", user: {...} }
+```
+
+### Get Profile (Me)
+```javascript
+await fetch('https://api.urbackend.bitbros.in/api/userAuth/me', {
+  method: 'GET',
+  headers: {
+    'x-api-key': 'YOUR_API_KEY',
+    'Authorization': 'Bearer <USER_TOKEN>' // From login response
+  }
+});
+```
+
+## 2. Database API
+
+Direct JSON document storage with no database management required.
+
+### Get All Items
+```javascript
+// Replace :collectionName with your actual collection name (e.g., 'products')
+const res = await fetch('https://api.urbackend.bitbros.in/api/data/products', {
+  headers: { 'x-api-key': 'YOUR_API_KEY' }
+});
+const data = await res.json();
+```
+
+### Insert Data
+```javascript
+await fetch('https://api.urbackend.bitbros.in/api/data/products', {
+  method: 'POST',
+  headers: {
+    'Content-Type': 'application/json',
+    'x-api-key': 'YOUR_API_KEY'
+  },
+  body: JSON.stringify({
+    name: "MacBook Pro",
+    price: 1299,
+    inStock: true
+  })
+});
+```
+
+### Update / Delete by ID
+```javascript
+const id = "DOCUMENT_ID";
+
+// Update
+await fetch(`https://api.urbackend.bitbros.in/api/data/products/${id}`, {
+  method: 'PUT',
+  headers: {
+    'Content-Type': 'application/json',
+    'x-api-key': 'YOUR_API_KEY'
+  },
+  body: JSON.stringify({ price: 1199 })
+});
+
+// Delete
+await fetch(`https://api.urbackend.bitbros.in/api/data/products/${id}`, {
+  method: 'DELETE',
+  headers: { 'x-api-key': 'YOUR_API_KEY' }
+});
+```
+
+## 3. Storage API
+
+Manage files and images with ease.
+
+### Upload File
+```javascript
+const formData = new FormData();
+formData.append('file', fileInput.files[0]);
+
+const res = await fetch('https://api.urbackend.bitbros.in/api/storage/upload', {
+  method: 'POST',
+  headers: { 'x-api-key': 'YOUR_API_KEY' },
+  body: formData
+});
+const data = await res.json();
+// Returns { url: "...", path: "project_id/filename.jpg" }
+```
+
+### Delete File
+```javascript
+await fetch('https://api.urbackend.bitbros.in/api/storage/file', {
+  method: 'DELETE',
+  headers: {
+    'Content-Type': 'application/json',
+    'x-api-key': 'YOUR_API_KEY'
+  },
+  body: JSON.stringify({
+    path: "PROJECT_ID/filename.jpg"
+  })
+});
+```
+
+## 🔐 Security Best Practices
+
+> [!IMPORTANT]
+> **Key Separation**:
+> - Use the **Publishable Key** (`pk_live_...`) for frontend requests (Read-Only).
+> - Use the **Secret Key** (`sk_live_...`) ONLY for backend/secure environments.