fix: use python3 to parse OAuth2 token response (handles spaces in JSON)

.gitea/workflows/deploy-chrome.yml

@@ -51,10 +51,9 @@ jobs:
             -d "client_secret=${{ secrets.CWS_CLIENT_SECRET }}" \
             -d "refresh_token=${{ secrets.CWS_REFRESH_TOKEN }}" \
             -d "grant_type=refresh_token")
-          echo "TOKEN_RESPONSE: $(echo $TOKEN_RESPONSE | sed 's/"access_token":"[^"]*"/"access_token":"***"/g')"
-          ACCESS_TOKEN=$(echo $TOKEN_RESPONSE | grep -o '"access_token":"[^"]*"' | cut -d'"' -f4)
+          ACCESS_TOKEN=$(echo "$TOKEN_RESPONSE" | python3 -c "import json,sys; d=json.load(sys.stdin); print(d['access_token'])" 2>/dev/null)
           if [ -z "$ACCESS_TOKEN" ]; then
-            echo "❌ Failed to get access token"
+            echo "❌ Failed to get access token. Response: $TOKEN_RESPONSE"
             exit 1
           fi
           echo "CWS_ACCESS_TOKEN=${ACCESS_TOKEN}" >> $GITHUB_ENV