feat: add compare batches script

scripts/README.md

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+# Compare Batches Script
+
+This directory contains the `compare_batches.sh` script for comparing batch data between two domains.
+
+## Usage
+
+To use the `compare_batches.sh` script:
+
+1. Make the script executable:
+   ```bash
+   chmod +x compare_batches.sh
+   ```
+
+2. Run it with two domain names:
+   ```bash
+   ./compare_batches.sh localhost:1633 other_domain
+   ```
+
+## What the script does
+
+The `compare_batches.sh` script:
+
+- Checks for correct number of arguments (requires exactly 2 domain names)
+- Uses `curl -s` for silent mode to fetch `/batches` endpoint from both domains
+- Pipes output through `jq` to format JSON
+- Saves results to `1.txt` and `2.txt`
+- Uses `diff --side-by-side --suppress-common-lines` to show only differing lines in a side-by-side format
+  - `--side-by-side` displays the differing lines from both files next to each other
+  - `--suppress-common-lines` ensures only differing lines are shown
+- Reports if differences were found or not
+
+## Output
+
+The script will display differences between the two batch endpoints side by side, or report "No differences found" if the responses are identical.

scripts/compare_batches.sh

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+#!/bin/bash
+
+# Check if two domain arguments are provided
+if [ $# -ne 2 ]; then
+    echo "Usage: $0 <domain1> <domain2>"
+    exit 1
+fi
+
+DOMAIN1=$1
+DOMAIN2=$2
+FILE1="1.txt"
+FILE2="2.txt"
+
+# Perform curl requests in parallel
+curl -s "http://${DOMAIN1}/batches" | jq > "$FILE1" &
+PID1=$!
+curl -s "http://${DOMAIN2}/batches" | jq > "$FILE2" &
+PID2=$!
+
+# Wait for both curl commands to complete
+wait $PID1
+if [ $? -ne 0 ]; then
+    echo "Error fetching data from ${DOMAIN1}"
+    exit 1
+fi
+
+wait $PID2
+if [ $? -ne 0 ]; then
+    echo "Error fetching data from ${DOMAIN2}"
+    exit 1
+fi
+
+# Compare the files and show differences side by side
+echo "Differences between ${FILE1} and ${FILE2} (side by side):"
+diff --side-by-side --suppress-common-lines "$FILE1" "$FILE2"
+
+# Check if there were any differences
+if [ $? -eq 0 ]; then
+    echo "No differences found."
+else
+    echo "Differences found (see above)."
+fi