docs: Add CD quick start guide

CD_QUICK_START.md

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+# Continuous Delivery - Quick Start
+
+## Start Auto-Deployment in 10 Seconds
+
+```powershell
+.\start-cd.ps1 watch
+```
+
+That's it! Your changes will now automatically commit and push to GitHub.
+
+## What Happens Now?
+
+1. Edit any file and save
+2. Wait 30 seconds after your last change
+3. Automatically commits with change summary
+4. Automatically pushes to GitHub
+5. Repeat!
+
+## Common Commands
+
+```powershell
+# Start file watcher (recommended)
+.\start-cd.ps1 watch
+
+# Start timer mode (every 5 minutes)
+.\start-cd.ps1 start
+
+# Commit and push once, right now
+.\start-cd.ps1 once
+
+# Stop all CD processes
+.\start-cd.ps1 stop
+
+# Check git status
+.\start-cd.ps1 status
+```
+
+## Example Output
+
+```
+[14:23:45] Changed: setup.php
+[14:23:47] Changed: docker-compose.yml
+
+Debounce period elapsed. Processing 2 changes...
+ℹ Found 2 changed files
+✓ Committed changes
+✓ Successfully pushed to GitHub
+
+Continuing to watch for changes...
+```
+
+## What Gets Auto-Committed?
+
+- Application code (PHP, JS, CSS)
+- Configuration files
+- Documentation
+- SQL schemas
+
+## What's Excluded?
+
+- Session files (`f_data/data_sessions/`)
+- Cache files (`f_data/data_cache/`)
+- Database files (`db_data/`)
+- Log files (`*.log`)
+- Dependencies (`node_modules/`, `vendor/`)
+
+## Troubleshooting
+
+**Not detecting changes?**
+- Check if file is in `.gitignore`
+
+**Need to stop?**
+- Press `Ctrl+C` or run `.\start-cd.ps1 stop`
+
+**Want custom settings?**
+- Edit `.cd-config.json`
+
+## Full Documentation
+
+See [CONTINUOUS_DELIVERY_GUIDE.md](CONTINUOUS_DELIVERY_GUIDE.md) for complete documentation.
+
+---
+
+**Ready?** Run `.\start-cd.ps1 watch` and start coding!