feat(githooks): add post-commit hook for logging and script execution

.githooks/post-commit

@@ -0,0 +1,38 @@
+#!/bin/bash
+
+set -u
+
+REPO_ROOT="$(git rev-parse --show-toplevel 2>/dev/null)"
+SCRIPT_PATH="$REPO_ROOT/scripts/release/pre_release_web.sh"
+LOG_FILE="$REPO_ROOT/logs/post-commit.log"
+COMMIT_HASH="$(git rev-parse --short HEAD 2>/dev/null || echo unknown)"
+
+mkdir -p "$(dirname "$LOG_FILE")"
+
+{
+  echo ""
+  echo "=== post-commit @ $(date +%Y-%m-%dT%H:%M:%S%z) ==="
+  echo "repo:   $REPO_ROOT"
+  echo "commit: $COMMIT_HASH"
+  echo "script: $SCRIPT_PATH"
+  echo ""
+} >> "$LOG_FILE"
+
+if [ ! -x "$SCRIPT_PATH" ]; then
+  {
+    echo "=== ERROR: script not executable or not found ==="
+    echo "path: $SCRIPT_PATH"
+    echo "=== post-commit EXIT_CODE=127 @ $(date +%Y-%m-%dT%H:%M:%S%z) ==="
+  } >> "$LOG_FILE"
+  exit 127
+fi
+
+"$SCRIPT_PATH" >> "$LOG_FILE" 2>&1
+EXIT_CODE=$?
+
+{
+  echo ""
+  echo "=== post-commit EXIT_CODE=$EXIT_CODE @ $(date +%Y-%m-%dT%H:%M:%S%z) ==="
+} >> "$LOG_FILE"
+
+exit "$EXIT_CODE"