fix: add configurable timeout to FalkorDB wait loop

The wait loop could block forever if FalkorDB never became reachable.
Now uses FALKORDB_WAIT_TIMEOUT (default 30s) via the bash SECONDS
variable to track elapsed time, logging a clear error message and
exiting non-zero if the timeout is exceeded.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: gkorland

start.sh

@@ -11,9 +11,15 @@ if [ "${FALKORDB_HOST}" = "localhost" ] || [[ "${FALKORDB_HOST}" =~ ^127\.0\.0\.
 fi
 
 # Wait until FalkorDB is ready
-echo "Waiting for FalkorDB to start on $FALKORDB_HOST:$FALKORDB_PORT..."
+FALKORDB_WAIT_TIMEOUT="${FALKORDB_WAIT_TIMEOUT:-30}"
+echo "Waiting for FalkorDB to start on $FALKORDB_HOST:$FALKORDB_PORT (timeout: ${FALKORDB_WAIT_TIMEOUT}s)..."
 
+SECONDS=0
 while ! nc -z "$FALKORDB_HOST" "$FALKORDB_PORT"; do
+  if [ "$SECONDS" -ge "$FALKORDB_WAIT_TIMEOUT" ]; then
+    echo "ERROR: FalkorDB did not become reachable at $FALKORDB_HOST:$FALKORDB_PORT within ${FALKORDB_WAIT_TIMEOUT}s" >&2
+    exit 1
+  fi
   sleep 0.5
 done