docs: Add comprehensive documentation and helper scripts

Add:
- QUICKSTART.md: 5-minute quick start guide with examples
- scripts/incus_setup.sh: Automated PostgreSQL container setup
- scripts/validate_migration.sql: SQL validation queries
- scripts/setup_cron.sh: Cron job setup for incremental migrations
- tests/test_setup.py: Unit tests for configuration and transformation
- install.sh: Quick installation script

Documentation includes:
- Step-by-step setup instructions
- Example queries for RAWDATACOR and ELABDATADISP
- Troubleshooting guide
- Performance optimization tips

🤖 Generated with Claude Code

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

scripts/setup_cron.sh

@@ -0,0 +1,37 @@
+#!/bin/bash
+# Setup cron job for incremental migration
+
+PROJECT_DIR=$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)
+VENV_PYTHON="$PROJECT_DIR/venv/bin/python"
+LOG_FILE="$PROJECT_DIR/migration_$(date +%Y%m%d).log"
+
+# Create cron job entry
+CRON_ENTRY="0 */6 * * * cd $PROJECT_DIR && $VENV_PYTHON main.py migrate incremental >> $LOG_FILE 2>&1"
+
+echo "Cron job to be added:"
+echo "$CRON_ENTRY"
+echo ""
+echo "This will run incremental migration every 6 hours."
+echo ""
+
+# Check if already exists
+if crontab -l 2>/dev/null | grep -q "migrate incremental"; then
+    echo "⚠ Cron job already exists"
+    echo ""
+    echo "Current cron jobs:"
+    crontab -l | grep -v '^#' | grep -v '^$'
+else
+    echo "Add to crontab? (y/n)"
+    read -r response
+
+    if [ "$response" = "y" ]; then
+        # Add cron job
+        (crontab -l 2>/dev/null; echo "$CRON_ENTRY") | crontab -
+        echo "✓ Cron job added successfully"
+        echo ""
+        echo "Verify with: crontab -l"
+        echo "View logs: tail -f migration_*.log"
+    else
+        echo "Cron job not added"
+    fi
+fi