ci: drop macOS 3.14t matrix cell (#133)

`tokenizers` (transitive via `litellm`) ships only `abi3` wheels, with
no free-threaded variant. On macOS arm64 runners since the early-Apr
image update, the source-build fallback fails to link against CPython
3.14t. Excluding the cell cleans up CI signal — end users on standard
Python 3.14 remain unaffected (they pick up the `abi3` wheel).

Ubuntu + 3.14t stays enabled (it still passes, via source build that
Linux's ld accepts). Re-enable macOS once HuggingFace/tokenizers ships
free-threaded wheels or litellm drops the dep.

Author: georgeh0

.github/workflows/pre-commit.yml

@@ -21,6 +21,14 @@ jobs:
           # pywin32 doesn't have wheels for Python 3.14t (free-threaded) on Windows yet
           - os: windows-latest
             python-version: '3.14t'
+          # tokenizers has no free-threaded wheel; the source-build fallback
+          # fails to link on macOS arm64 since an Apr 2026 runner-image update.
+          # Standard Python 3.14 (non-FT) users are unaffected — they pick up
+          # tokenizers' abi3 wheel. Re-enable once HuggingFace/tokenizers ships
+          # free-threaded wheels (or switch to a newer litellm that drops the
+          # tokenizers dep).
+          - os: macos-latest
+            python-version: '3.14t'
     steps:
       - uses: actions/checkout@v4