## Why
PR #25905 intentionally adds a failing `codex-core` unit test, but its
[Bazel test on Windows
check](https://github.com/openai/codex/actions/runs/26837526950/job/79135369259)
passed. That shows the Bazel configuration introduced by #25156 is not
behaving as expected, so revert it while the configuration can be
investigated separately.
## What changed
Revert #25156 in full, restoring the previous Bazel remote
configuration, CI scripts, workflows, `rusty_v8` handling, and
documentation. This removes the shared BuildBuddy wrapper and its tests.
## Validation
Not run locally; this exact revert was prioritized for a fast rollback.
## Why
Bazel remote configuration was selected in several CI scripts and
workflow steps. That made the BuildBuddy tenant policy easy to duplicate
and harder to audit, especially for fork pull requests that must not use
the OpenAI tenant.
This builds on
[sluongng/buildbuddy-ci-host-routing](https://github.com/openai/codex/compare/main...sluongng:codex:sluongng/buildbuddy-ci-host-routing)
and consolidates the policy in one place.
## What to do if this breaks you
See `codex-rs/docs/bazel.md` for details. TLDR:
1. make a BuildBuddy API key and put it in `~/.bazelrc`
2. if you're an OpenAI employee, add `common
--config=buildbuddy-openai-rbe` to `user.bazelrc` in the repo root
Run `just bazel-test` to ensure it works.
Note that `just bazel-remote-test` no longer exists, you need to select
a remote configuration as documented to use RBE.
## What changed
- Add `.github/scripts/run_bazel_with_buildbuddy.py` as the shared Bazel
wrapper and Python library. It selects the OpenAI host only for trusted
upstream GitHub Actions runs, routes keyed fork runs to the generic
host, and falls back to local Bazel execution when no key is available.
- Move endpoint selection into explicit `.bazelrc` configurations and
update Bazel CI, query helpers, and `rusty_v8` staging to use the shared
policy. Loading-phase target-discovery queries remain local.
- Add wrapper and `rusty_v8` unit coverage, plus `just test-scripts` for
the `.github/scripts` Python tests.
- Document local Bazel usage, `user.bazelrc` setup, BuildBuddy
configurations, and CI behavior in `codex-rs/docs/bazel.md`.
## Validation
- `just test-scripts`
- `bash -n .github/scripts/run-bazel-ci.sh
.github/scripts/run-bazel-query-ci.sh
.github/scripts/run-argument-comment-lint-bazel.sh
scripts/list-bazel-clippy-targets.sh`
- `python3 -m py_compile .github/scripts/run_bazel_with_buildbuddy.py
.github/scripts/test_run_bazel_with_buildbuddy.py
.github/scripts/test_rusty_v8_bazel.py
.github/scripts/rusty_v8_bazel.py`
- `ruff check .github/scripts/run_bazel_with_buildbuddy.py
.github/scripts/test_run_bazel_with_buildbuddy.py
.github/scripts/test_rusty_v8_bazel.py
.github/scripts/rusty_v8_bazel.py`