rebalancer

Performance testing CLI for the rebalancer solver (algopt/rebalancer/). Use when benchmarking solver performance, comparing commits for regressions, profiling solver execution, running A/B tests, or querying the rebalancer_runs Scuba table. Covers local, Skycastle (distributed), and ServiceLab (isolated hardware) execution environments. Also handles replaying saved solver configs and managing predefined run collections like the pareto golden set. Only for the rebalancer project — not for general ServiceLab benchmarks, non-rebalancer services, or functional correctness testing.

Debugging tool for rebalancer constraint violations and move failures using eval_move, list_server_moves, and query_mip CLIs.

Use when GitHub Actions CI is failing, when investigating build or test failures on a branch or PR, when the user asks about CI status, or when you need to diagnose why a workflow failed, or when you need to examine GHA build logs (e.g. sccache stats, cache usage, build timing). Triggers on keywords like "CI", "GHA", "GitHub Actions", "build failure", "tests failing", "pipeline broken", "build logs", "sccache", "cache stats", "build performance".