Fix deploy script curl to show daemon response on failure

The -sf flag was silently swallowing error responses.
Now captures full response and checks for error field.

deploy_wireless.sh

@@ -98,13 +98,13 @@ sleep 1
 # slouch_detector as a managed subprocess with the correct venv and
 # ReachyMini connection context.
 echo "==> Starting slouch_detector via daemon..."
-RESP=$(ssh "${REMOTE}" "curl -sf -X POST ${DAEMON_API}/start-app/slouch_detector 2>/dev/null")
-if [ $? -ne 0 ]; then
+RESP=$(ssh "${REMOTE}" "curl -s -X POST ${DAEMON_API}/start-app/slouch_detector 2>&1")
+if echo "$RESP" | grep -q '"error"' && ! echo "$RESP" | grep -q '"error":null'; then
     echo "    ERROR: Failed to start slouch_detector via daemon API."
     echo "    Response: ${RESP}"
     exit 1
 fi
-echo "    Started."
+echo "    Started. (${RESP})"
 
 echo ""
 echo "Web UI: http://${HOST}:8042"