python-sdk@0.1.3

fix(sdk/go): stop sending empty args on AddResource (#2878)

AddResource unconditionally attached args: {} to every request body. Against
instances that predate #2549 (which added the args field to the resources
route under model_config=ConfigDict(extra="forbid")), the empty args object
is rejected with "body.args: Extra inputs are not permitted", so add-resource
fails entirely on older / hosted endpoints.

Only attach args when arguments were actually provided (len(opts.Args) > 0),
mirroring the Python SDK _compact_request_body (#2834) and the Rust CLI
compact_request_body (#2799). Other fields, including directly_upload_media,
are unchanged. Scope is args-only, matching #2834.

Tests cover the three arg states: omitted when unset, omitted when explicitly
empty (server defaults args to {} on this create route, so absent and
present-but-empty are equivalent), and forwarded when populated.