add ASYNC125 constant-absolute-deadline

[jakkdl]

fixes #353

anyio does not currently have CancelScope(relative_deadline=...), but @agronholm seemed open to adding it so I'm not gonna bother messing around with the error message for now.

[Copilot]

Pull Request Overview

This PR introduces the ASYNC125 error code to detect cases where a constant value is used with timing functions (e.g., fail_at, move_on_at, CancelScope) that expect deadline values relative to the runner clock. The changes include new tests to exercise the ASYNC125 behavior, modifications to error reporting in visitors, and an updated TrioScope constructor to improve clarity.

Reviewed Changes

Copilot reviewed 6 out of 9 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
tests/test_flake8_async.py	Added "ASYNC125" to the list of error codes to trigger tests.
tests/eval_files/async125.py	New test file to validate ASYNC125 behavior for various trio calls.
flake8_async/visitors/visitors.py	Updated error messaging to use match.base and refactored error format.
flake8_async/visitors/visitor102_120.py	Updated TrioScope constructor usage with explicit parameters.
flake8_async/visitors/helpers.py	Refactored get_matching_call to return a MatchingCall dataclass.
flake8_async/init.py	Bumped version to reflect recent changes.

Files not reviewed (3)

• docs/changelog.rst: Language not supported
• docs/rules.rst: Language not supported
• docs/usage.rst: Language not supported

Comments suppressed due to low confidence (2)

flake8_async/visitors/visitors.py:290

• Verify that replacing m[2] with m.base retains the intended error context; if additional details were included with m[2], consider preserving them in the error message.

self.error(node, m.base)

flake8_async/visitors/visitor102_120.py:129

• Ensure that the updated TrioScope constructor signature is compatible with all call sites; if additional parameters become necessary, update the constructor and its callers accordingly.

trio_scope = self.TrioScope(call.node, call.name)

[Zac-HD]

10/10, no notes. Thanks @jakkdl, this will definitely catch some bugs!