[daveomri]

Widens apify-client from >=2.3.0,<3.0.0 to >=3.3.0,<4.0.0 so this package can be installed alongside Apify Python SDK v4 (requires apify-client>=3.1.0). Unblocks the python-crewai template's SDK v4 bump.

Breaking

• Python 3.11 is now the minimum (required by apify-client 3.x). CI matrix is 3.11 to 3.13.
• Tool envelope timestamps are now ISO 8601 with an explicit offset (2025-01-01T00:00:00+00:00) instead of the API's raw Z form. Same instant, different spelling.

Tool names, signatures and envelope keys are otherwise unchanged.

Notes

• Floor is 3.3.0, not 3.0.0: on 3.0.0, Run requires general_access and three RunStats fields that are optional by 3.3.0, and actor().get() returns Actor there vs ActorResource now. Pinning to the tested version avoids fixtures that pass locally but fail on the oldest allowed client.
• Client API: .call() now returns a Run model (run.default_dataset_id) and takes run_timeout as a timedelta. Public timeout_secs params are unchanged; conversion happens at the call boundary.
• Removed dead code: guards for default_dataset_id / id (required str on 3.x), the _iso timestamp helper (run timestamps are always datetimes), and the tests that could only reach them with an invalid Run.

Test plan

• 405 unit tests, mypy, ruff check, ruff format --check pass on Python 3.13
• 3.11 and 3.12 matrix legs (CI)
• Integration tests against a live APIFY_TOKEN

Run fixtures are now real Run instances rather than dicts, so leftover dict-style access fails the suite instead of passing against a MagicMock.

Closes #39

co-created with Claude

[vdusek]

LGTM