## What changed
- Use the standard shell executor and remove the zsh fork escalation runtime, `codex-execve-wrapper`, and `shell-escalation` crate.
- Ignore `shell_zsh_fork` and `unified_exec_zsh_fork`, emit migration notices for legacy configuration, and warn when ignoring managed requirements for these flags.
- Keep the active session's `apply_patch` alias directory readable under restricted filesystem permissions.
## Testing
Add coverage for legacy configuration startup and shell execution, migration notice rendering, active alias directory selection, and nested `apply_patch` execution while other files in `CODEX_HOME` remain unreadable.
GitOrigin-RevId: 43af461fea32b4980550ee7237effd2bc0646ed8
## Why
Hash-based sharding does not account for differences in test duration. Use estimated test time to balance the Windows Bazel workload across shards.
## What changed
- Add checked-in duration weights and a deterministic selector that assigns the longest targets first to the least-loaded shard.
- Assign every queried target exactly once, default missing weights to one second, and ignore stale weights.
- Run queries and selection in the foreground so failures stop the job before tests run with a partial target list.
- Emit LF-delimited target labels for Git Bash and report estimated shard loads on stderr.
## Testing
Add seven passing selector tests covering deterministic coverage and balancing, missing and stale weights, invalid inputs, duration-file overrides, and CLI output. Run them on the first Windows CI shard.
GitOrigin-RevId: d415ae093bfe57794ee53a2eb9d712022202dad8
jif