Add diagnostic checks to chartmuseum test helper script

pkg/helm/actions/testdata/chartmuseum.sh

@@ -9,18 +9,39 @@ if [ ! -x "$BINARY" ]; then
   ls -la "./$GOOS-$GOARCH/" >&2
   exit 1
 fi
+
+# Verify binary can execute (catches glibc/library incompatibility)
+if ! "$BINARY" --version > /dev/null 2>&1; then
+  echo "ERROR: chartmuseum binary cannot execute (likely library incompatibility)" >&2
+  echo "ldd output:" >&2
+  ldd "$BINARY" >&2 || true
+  file "$BINARY" >&2 || true
+  exit 1
+fi
+
 echo "Starting chartmuseum TLS on port 9443..." >&2
+
+# Verify TLS files exist
+if [ ! -f ./server.crt ] || [ ! -f ./server.key ]; then
+  echo "ERROR: TLS cert/key missing. Expected ./server.crt and ./server.key" >&2
+  ls -la ./server.* >&2 || true
+  exit 1
+fi
+
 "$BINARY" --debug --port=9443 \
   --storage="local" \
   --storage-local-rootdir="./chartstore-9443" \
   --tls-cert=./server.crt --tls-key=./server.key \
   > ./chartmuseum-9443.log 2>&1 &
 CM_PID=$!
 echo $CM_PID > ./chartmuseum-tls.pid
-sleep 1
+sleep 3
 if ! kill -0 $CM_PID 2>/dev/null; then
-  echo "ERROR: chartmuseum (TLS) exited immediately. Log:" >&2
+  echo "ERROR: chartmuseum (TLS) exited within 3s. Exit code:" >&2
+  wait $CM_PID 2>/dev/null; echo "  $?" >&2
+  echo "Log contents:" >&2
   cat ./chartmuseum-9443.log >&2
+  echo "---" >&2
   exit 1
 fi
 echo "chartmuseum TLS started (PID $CM_PID)" >&2