[WIP] Fix #1413 joined-row aggregation residual

[lmeyerov]

Summary

Fixes the IC4/new-topics half of #1413 by allowing chained comparisons inside CASE WHEN conditions before joined-row aggregation validation.

Issue

Partially addresses #1413 (IC4/new-topics half)
Related: #880, #992, #1259

Target Lanes

• interactive-complex-4 / new-topics: covered by an exact LDBC reference-shape regression.
• interactive-complex-3 / cross-country-messages: reprobed after Add GFQL row join apply (#1411) #1426 / [POST-RERUN] #880 residual: joined row projection bucket #1411 landed; the collect-list plus carried-row MATCH after WITH shape still hits the compiler's current MATCH after WITH gate, so this PR remains the IC4 half.

Changes

• Rewrites chained comparisons inside unquoted CASE WHEN ... THEN conditions, e.g. $startDate <= post.creationDate < $endDate.
• Preserves unchanged CASE expressions so unrelated CASE bodies do not fall through to whole-expression chained-comparison rewriting.
• Uses explicit capture extraction in _rewrite_match_text instead of tuple/list-driven group-name extraction.
• Adds adversarial coverage for exact IC4, multiple chained CASE arms, unrelated CASE comparisons, and multiple chained CASE flags in one joined-row aggregation.
• Adds an unreleased CHANGELOG.md entry under Development / Fixed.

Local Validation

• PYTHONPATH=/tmp/pygraphistry-issue-1413-deps python3 -m pytest -q graphistry/tests/compute/gfql/cypher/test_lowering.py -k 'issue_1413_ic4_new_topics_exact_ldbc_reference_query or supports_generic_match_where_chained_comparison or multi_alias_with_three_stage_case_aggregation or multi_alias_with_distinct_count_projection'
  • superseded by amplified suite below
• PYTHONPATH=/tmp/pygraphistry-issue-1413-deps python3 -m pytest -q graphistry/tests/compute/gfql/cypher/test_lowering.py -k 'issue_1413 or supports_generic_match_where_chained_comparison or multi_alias_with_three_stage_case_aggregation or multi_alias_with_distinct_count_projection'
  • 7 passed, 984 deselected, 4 warnings
• python3 -m ruff check graphistry/compute/gfql/cypher/lowering.py graphistry/tests/compute/gfql/cypher/test_lowering.py
  • All checks passed!
• python3 -m py_compile graphistry/compute/gfql/cypher/lowering.py graphistry/tests/compute/gfql/cypher/test_lowering.py
  • ok
• python3 bin/ci_cypher_surface_guard.py
  • pass
• Post-Add GFQL row join apply (#1411) #1426 rebase:
  • Rebased onto origin/master at 8e7d66c8 Add GFQL row join apply (#1426).
  • Focused [POST-RERUN] #880 residual: joined row aggregation bucket #1413 suite: 7 passed, 986 deselected, 4 warnings.
  • ruff, py_compile, and ci_cypher_surface_guard.py: pass.
  • IC3/cross-country probe after Add GFQL row join apply (#1411) #1426: still blocked by Cypher MATCH after WITH is only supported... for the WITH person, collect(city) AS cities MATCH ... shape.
• DGX Spark RAPIDS matrix:
  • MATRIX_CELLS="25.02:gfql 26.02:gfql" WITH_IMAGE_BUILD=0 WITH_GPU=1 PROFILE=gfql ./docker/test-rapids-official-matrix.sh
  • Initial run included GFQL profile defaults plus the four [POST-RERUN] #880 residual: joined row aggregation bucket #1413 regression tests: 25.02/gfql PASS, 26.02/gfql PASS; 347 passed, 5 warnings.
  • Post-Add GFQL row join apply (#1411) #1426 rebase rerun included GFQL defaults, the four [POST-RERUN] #880 residual: joined row aggregation bucket #1413 tests, and Add GFQL row join apply (#1411) #1426 scalar-prefix row-join tests including cudf: 25.02/gfql PASS, 26.02/gfql PASS; 350 passed, 5 warnings.

Notes:

• ./bin/typecheck.sh graphistry/compute/gfql/cypher/lowering.py is blocked by existing imported-module mypy debt in graphistry/_version.py:57.
• Local minimal-lite-equivalent run is blocked by this workstation's missing CUDA/optional GPU/text/UMAP environment; CI should be the full matrix arbiter.

CI

gh pr checks 1422 --watch --interval 10 completed green after rebasing onto current origin/master at 8e7d66c8 (#1426 / #1411).