Refactor code for improved readability and performance

scripts/get-cloudflare-api-key.md

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+# Get Your Cloudflare Global API Key
+
+The current API key in your `.env` file is not authenticating correctly. Follow these steps:
+
+## Option 1: Get Global API Key (Current Method)
+
+1. Go to: https://dash.cloudflare.com/profile/api-tokens
+2. Scroll down to **API Keys** section
+3. Click **View** next to **Global API Key**
+4. Enter your Cloudflare password
+5. Copy the **Global API Key** (40 characters, alphanumeric)
+6. Update `.env`:
+   ```
+   CLOUDFLARE_API_KEY="your-global-api-key-here"
+   CLOUDFLARE_EMAIL="theoracle@defi-oracle.io"
+   ```
+
+## Option 2: Create API Token (Recommended - More Secure)
+
+1. Go to: https://dash.cloudflare.com/profile/api-tokens
+2. Click **Create Token**
+3. Click **Edit zone DNS** template OR create **Custom token** with:
+   - **Permissions:**
+     - **Zone** → **DNS** → **Edit**
+     - **Account** → **Cloudflare Tunnel** → **Edit**
+   - **Zone Resources:** Include → Specific zone → `d-bis.org`
+   - **Account Resources:** Include → Specific account → Your account
+4. Click **Continue to summary** → **Create Token**
+5. **Copy the token immediately** (you won't see it again!)
+6. Update `.env`:
+   ```
+   CLOUDFLARE_API_TOKEN="your-api-token-here"
+   # Comment out or remove CLOUDFLARE_API_KEY and CLOUDFLARE_EMAIL
+   ```
+
+## Verify Your API Key
+
+After updating, test with:
+```bash
+./scripts/test-cloudflare-api.sh
+```
+
+You should see: `✓ API Key works! Email: theoracle@defi-oracle.io`
+