Index Gcs File

Index a single file from GCS bucket into a database. Uses the same Step Function workflow as /index-gcs but targets a specific file. Headers: - Authorization: Bearer {api_key} - Captain API key for authentication - X-Organization-ID: Organization UUID Args: database_name: Name of the database (looked up automatically) bucket_name: GCS bucket name containing the file file_uri: GCS URI of the file (format: gs://bucket-name/path/to/file.pdf) service_account_json: Service Account JSON credentials (as string) Authentication: Requires valid API key in Authorization header