chore: init from code-review-graph-main snapshot (v2.3.7)

tests/fixtures/sample.sh

@@ -0,0 +1,43 @@
+#!/bin/bash
+# Sample shell script exercising the bash parser.
+
+set -euo pipefail
+
+source ./sample_lib.sh
+. ./sample_config.sh
+
+readonly DATA_DIR="/tmp/crg-example"
+
+log_info() {
+    local msg="$1"
+    echo "[INFO] $msg"
+}
+
+log_error() {
+    local msg="$1"
+    echo "[ERROR] $msg" >&2
+}
+
+ensure_dir() {
+    local dir="$1"
+    if [ ! -d "$dir" ]; then
+        mkdir -p "$dir"
+        log_info "created $dir"
+    fi
+}
+
+cleanup() {
+    rm -rf "$DATA_DIR"
+    log_info "cleaned up $DATA_DIR"
+}
+
+main() {
+    log_info "starting"
+    ensure_dir "$DATA_DIR"
+    # Simulate some work
+    echo "processing" > "$DATA_DIR/status"
+    cleanup
+    log_info "done"
+}
+
+main "$@"