Create ~/.jrqrc config template on deploy

deploy.sh now generates a commented ~/.jrqrc template on first install
so users know what to fill in. Skips creation if the file already exists
to avoid overwriting existing credentials.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

deploy.sh

@@ -99,3 +99,29 @@ else
         echo "           jrq (for query wrapper)"
     fi
 fi
+
+# Create ~/.jrqrc template if it doesn't exist
+if [ ! -f "${HOME}/.jrqrc" ]; then
+    echo "Creating ~/.jrqrc config template..."
+    cat > "${HOME}/.jrqrc" <<'EOF'
+# jrq configuration
+# Uncomment and fill in the values below
+
+# JDBC connection URL (required)
+# Examples:
+#   AS/400:     jdbc:as400://hostname
+#   PostgreSQL: jdbc:postgresql://hostname:5432/dbname
+#   SQL Server: jdbc:sqlserver://hostname:1433;databaseName=mydb
+#JR_URL=""
+
+# Database credentials (required)
+#JR_USER=""
+#JR_PASS=""
+
+# Output format: csv or tsv (default: csv)
+#JR_FORMAT="csv"
+EOF
+    echo "Edit ~/.jrqrc to add your connection details before using jrq"
+else
+    echo "~/.jrqrc already exists, skipping template creation"
+fi