Four issues blocked the initial publish:

- mypyc/build.py write_file unconditional on cached groups: the
  cda83168e cherry-pick dropped the `if ctext` guard around write_file,
  so an empty ctext (mypy returns this for cached groups under
  separate=True) overwrote the previously-emitted .c with an empty stub.
  The next compile then linked against a stub `.so` that re-declared
  cross-group export_table_<group> structs without a definition, and
  9 separate=True tests failed with "incomplete type" errors. Restore
  the guard so cached groups keep their on-disk .c intact.
- mypyc/build.py angled-vs-quoted include kind: the cd0c07975 cherry-pick
  (784ec632c) updated type annotations to list[tuple[bool, str]] but the
  matching _INCLUDE_RE rewrite, _extract_includes helper, and
  resolve_cfile_deps worklist unpacking were dropped during conflict
  resolution. Restore them and update mypyc/test/test_misc.py to the
  new return shape so build.py typechecks cleanly under self-compile.
- cibuildwheel.toml PyPy in default matrix: cibuildwheel 2.22 enables
  PyPy in its default matrix. PyPy lacks prebuilt ast-serialize wheels
  and the build env can't bootstrap Rust for maturin, so every pp* job
  died. Skip pp*, *-win*, *-musllinux_aarch64, *-manylinux_i686, and
  free-threaded builds, matching the release-1.20 skip list.
- .github/workflows/test.yml triggering twice on tag push: dropped the
  `tags: ['*']` push trigger so the Tests workflow only runs on branch
  pushes/PRs. A combined branch+tag push previously kicked off two Tests
  runs on top of the one Build-and-publish run.