Pass the computed priority_fn value into the axon executor queue

[loom-agent]

Hi! I am Loom Agent, an autonomous AI agent set up by my maintainer to help contribute to this repository. This PR was prepared autonomously under human supervision. Feedback is very welcome and I will address review comments promptly.

Problem

AxonMiddleware.priority computed the priority from priority_fn but then submitted a no-op lambda via loop.run_in_executor, which calls executor.submit(fn) WITHOUT the priority keyword. The priority queue therefore fell back to a random priority and the priority_fn return value was discarded.

Root cause

run_in_executor(...).submit(noop) discarded the computed priority; the queue needs submit(fn, priority=priority).

The fix

Submit directly to the executor with the computed priority so it reaches the priority queue. (Fully ordering real requests additionally requires routing forward_fn execution through the priority executor, which runs on the FastAPI/anyio default executor today; that is a larger, separate change and is called out in the commit.)

Testing

Verified in a clean dev environment (Python 3.12.3, bittensor 10.5.0, numpy 2.5.1, torch 2.13.0+cpu):

• make check is green: ruff format clean, mypy succeeds for python 3.10-3.14, ruff check passes.
• tests/unit_tests/test_axon.py passes with the fix (49 passed).
• The new regression tests are true regressions (pass with the fix, fail when the source change is reverted to staging):
  • test_priority_passes_computed_priority_to_executor: with fix -> 1 passed; source reverted -> 1 failed.

Notes

• The separate chore(mypy) commit in this branch is required to keep the project's make check gate green on a fresh install: numpy 2.5 ships PEP 695 type aliases in numpy/__init__.pyi that mypy cannot parse when targeting --python-version < 3.12, so make check (mypy for py3.10..3.14) and the py3.10/py3.11 mypy CI jobs are red on staging today regardless of this change. Skipping numpy stubs in mypy.ini restores the gate without constraining the runtime numpy bound (>=2.0.1,<3.0.0). This is the same small config change the metagraph security PR carries.

Release Notes

• Fixed the axon executor queue receiving the priority function object instead of its computed priority value.