Add n8n workflow setup documentation

N8N_WORKFLOW_SETUP.md

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+# N8N Workflow for MQL Settings Monitoring
+
+## Overview
+
+This n8n workflow monitors your `.set` files every 6 hours and alerts you if there are issues like:
+- Invalid variable names (typos)
+- Missing critical parameters
+- Overly restrictive settings blocking trades
+- Weekend protection disabled
+- Files not tracked in git
+
+## Files Included
+
+| File | Purpose |
+|------|---------|
+| `n8n-workflow-simple.json` | Simple workflow (recommended) |
+| `n8n-workflow-check-sets.json` | Advanced workflow with Discord |
+| `scripts/validate-settings.sh` | Validation script |
+
+## Quick Setup (Simple Workflow)
+
+### 1. Install N8N
+```bash
+# Using Docker
+docker run -it --rm \
+  --name n8n \
+  -p 5678:5678 \
+  -v ~/.n8n:/home/node/.n8n \
+  n8nio/n8n
+```
+
+### 2. Import Workflow
+1. Open N8N: http://localhost:5678
+2. Click **"Add Workflow"**
+3. Click **"Import from File"**
+4. Select `n8n-workflow-simple.json`
+
+### 3. Configure Environment Variables
+
+Add these to your n8n credentials or `.env`:
+
+```bash
+# Telegram Notifications (recommended)
+TELEGRAM_BOT_TOKEN=your_bot_token
+TELEGRAM_CHAT_ID=your_chat_id
+
+# Optional: Email Notifications
+ALERT_EMAIL=garfield@fetcherpay.com
+
+# Optional: Discord Notifications
+DISCORD_WEBHOOK_URL=https://discord.com/api/webhooks/...
+```
+
+### 4. Get Telegram Chat ID
+
+1. Message @userinfobot on Telegram - it will give you your ID
+2. Or use @getidsbot
+
+### 5. Activate Workflow
+
+1. Open the imported workflow
+2. Click **"Active"** toggle (top right)
+3. Click **"Save"**
+
+## Validation Script
+
+You can also run the validation manually:
+
+```bash
+# Run validation
+./scripts/validate-settings.sh
+
+# Run from anywhere
+/home/garfield/mql-trading-bots/scripts/validate-settings.sh
+```
+
+## What It Checks
+
+| Check | Description | Alert Level |
+|-------|-------------|-------------|
+| File count | Ensures .set files exist | Error |
+| Invalid variables | Finds typos like `InpMinConfluenceStrength` | Error |
+| Missing parameters | Checks critical params exist | Error |
+| High strength | Warns if `InpMinStrength` > 0.8 | Warning |
+| Debug mode | Warns if debug disabled | Warning |
+| Weekend protection | Ensures `InpCloseBeforeWeekend=true` | Error |
+| Git status | Warns about untracked files | Warning |
+
+## Sample Telegram Alert
+
+```
+🚨 MQL Settings Issues Found:
+
+ISSUE: confluence-eurusd.set missing: InpCloseBeforeWeekend
+ISSUE: confluence-usdjpy.set missing: InpCloseBeforeWeekend
+WARNING: High strength thresholds (may block trades):
+  - confluence-gbpusd.set: InpMinStrength=0.80
+
+⏰ 2026-03-30 14:30
+```
+
+## Sample Success Message
+
+```
+✅ Settings check passed
+
+Confluence settings: 13 files
+Grid settings: 13 files
+✓ No invalid variable names found
+✓ All files have weekend protection enabled
+```
+
+## Scheduling Options
+
+Edit the Schedule Trigger node to change frequency:
+
+| Frequency | Settings |
+|-----------|----------|
+| Every 15 minutes | `interval: 15 minutes` |
+| Every hour | `interval: 1 hour` |
+| Every 6 hours | `interval: 6 hours` (default) |
+| Daily at 9am | `cron: 0 9 * * *` |
+
+## Troubleshooting
+
+### No alerts received
+- Check Telegram bot token is valid
+- Verify chat ID is correct
+- Check n8n execution log
+
+### Script fails with permission denied
+```bash
+chmod +x /home/garfield/mql-trading-bots/scripts/validate-settings.sh
+```
+
+### Workflow shows error
+- Ensure n8n can access `/home/garfield/mql-trading-bots`
+- Check that script exists and is executable
+
+## Advanced: Custom Checks
+
+Edit `scripts/validate-settings.sh` to add your own checks:
+
+```bash
+# Example: Check for specific EA version
+grep -q "EA_Version=1.16" *.set || echo "ISSUE: Files not updated to v1.16"
+```
+
+## Related Documentation
+
+- [AGENTS.md](AGENTS.md) - Project context
+- [SETTINGS_GUIDE.md](SETTINGS_GUIDE.md) - Settings documentation