GFQL: residual benchmark triage/split tooling for #880

[lmeyerov]

Summary

Implements issue #880 triage/split tooling by adding a reproducible parser/reporter for benchmark residual lanes still tagged to graphistry/pygraphistry#880.

What this adds

• New typed module: graphistry.compute.gfql.benchmark_residual_triage
  • Loads pyg-bench run artifacts (probe-results.json, optional run-manifest.json, optional remote-execution.json)
  • Filters residual lanes by issue ref (backend=gfql, status=partial)
  • Selects latest run per lane
  • Buckets residuals by root-cause heuristic
  • Renders split-ready markdown child-issue drafts with concrete repro evidence
• CLI wrapper: bin/gfql_issue_880_triage.py
• Tests: graphistry/tests/compute/gfql/test_benchmark_residual_triage.py
• Doc pointer: ai/docs/gfql/README.md

Why

#880 remains an umbrella with multiple benchmark-visible residuals. This PR provides a concrete, repeatable way to convert raw benchmark artifacts into narrow child issue drafts with reproducible evidence.

Validation

• ./bin/ruff.sh graphistry/compute/gfql/benchmark_residual_triage.py graphistry/tests/compute/gfql/test_benchmark_residual_triage.py bin/gfql_issue_880_triage.py
• ./bin/mypy.sh graphistry/compute/gfql/benchmark_residual_triage.py graphistry/tests/compute/gfql/test_benchmark_residual_triage.py bin/gfql_issue_880_triage.py
• python3 -m pytest -q graphistry/tests/compute/gfql/test_benchmark_residual_triage.py
• python3 bin/gfql_issue_880_triage.py --runs-dir /home/lmeyerov/Work/pyg-bench/results/runs --output /tmp/issue-880-residual-triage.md

Example usage

python bin/gfql_issue_880_triage.py --runs-dir ../pyg-bench/results/runs --output /tmp/issue-880-residual-triage.md

[lmeyerov]

Closing as intentionally empty after full revert (changedFiles=0, additions=0, deletions=0).

Coordinator decision: benchmark-residual triage logic for #880 should live in pyg-bench/private planning artifacts, not shipping pygraphistry runtime code.

Follow-up remains tracked in #880 via benchmark evidence/repros and scoped child issues where needed.