Authenticate to the Toggl Track API and pull time entries for reporting

Steps

1. Retrieve your API token from the Toggl Track web app under Profile Settings; this token is used as the username in HTTP Basic Auth with the literal string api_token as the password.
2. Make authenticated requests to the Toggl Track API v9 base URL https://api.track.toggl.com/api/v9 using HTTP Basic Auth with Content-Type: application/json.
3. GET /me/time_entries with start_date and end_date query parameters (ISO 8601) to retrieve time entries for the authenticated user.
4. For workspace-wide data across all users, use the Reports API at https://reports.api.track.toggl.com/reports/api/v3; authenticate with the same API token via Basic Auth.
5. POST to the desired Reports API endpoint (e.g., /workspace/{workspace_id}/search/time_entries) with a JSON filter body to query entries by user, project, client, tag, or date range.
6. Handle pagination using the X-Next-Row-Number response header returned by the Reports API to fetch subsequent pages of large result sets.