# Evidence: Block 34 · Service (block-34)

- block type: block
- date: 2026-08-22
- resulting state: closed/verified
- story points (combined assembled cost): 53744
- execution id: 20260823.044517.300Z-207a6942

## Stories built
- Implement index and membership utilities. (DATA-004) [story]

## Acceptance tooling authorization
- FEATURE-DATA-004.md#data-004-conformance: executable=python3; scope=test; authorization=existing Target environment

## Stacked context
- compass: COMPASS.md (SP 3420)
- implements: FEATURE-DATA-004.md (SP 444)
- context: builtin.jq (SP 2408)
- context: jq-manual.txt (SP 32696)
- context: jq.test (SP 13058)
- context: ARCHITECTURE_compact.md (SP 154)
- stack: python_compact.md (SP 1534)

## Build directory changes
- jq_interpreter/evaluator.py
- tests/test_data_003_entries_containment.py

## Pre-build acceptance observation
- RED: data-004-conformance (FEATURE-DATA-004.md)
  intent: The index, membership, quantifier, and emptiness slice executes matching corpus cases and passes all selected cases.
  return code: 1
  stdout:
    {
      "candidate": [
        "/mnt/c/Users/barlo/projects/drydock/uat/jq/runs/20260822.044627/build/jq/jq"
      ],
      "corpus": "jq.test",
      "summary": {
        "pass": 40,
        "fail": 3,
        "error": 0,
        "skip": 0
      },
      "cases": [
        {
          "line": 1827,
          "program": "bsearch(0,1,2,3,4)",
          "status": "fail",
          "detail": "output mismatch",
          "expect_failure": false,
          "expected": [
            "-1",
            "0",
            "1",
            "2",
            "-4"
          ],
          "actual": [
            "-1"
          ]
        },
        {
          "line": 2121,
          "program": "IN(range(10;20); range(10))",
          "status": "fail",
          "detail": "output mismatch",
          "expect_failure": false,
          "expected": [
            "false"
          ],
          "actual": [
            "true"
          ]
        },
        {
          "line": 2152,
          "program": "index(\"\")",
          "status": "fail",
          "detail": "output mismatch",
          "expect_failure": false,
          "expected": [
            "null"
          ],
          "actual": [
            "0"
          ]
        }
      ]
    }
  stderr:
    --- drydock: progress ---
    cases: pass=40 fail=3 error=0 skip=0 total=43 from=summary
    --- drydock: end progress ---
    --- drydock: values at failure ---
      summary = {'pass': 40, 'fail': 3, 'error': 0, 'skip': 0}
    --- drydock: end values ---
    Traceback (most recent call last):
      File "data-004-conformance.py", line 18, in <module>
        assert summary["fail"] == 0
               ^^^^^^^^^^^^^^^^^^^^
    AssertionError

## Post-build programmatic acceptance
- PASS: data-004-conformance (FEATURE-DATA-004.md)
  intent: The index, membership, quantifier, and emptiness slice executes matching corpus cases and passes all selected cases.
  target interpreter: /mnt/c/Users/barlo/projects/drydock/.venv/bin/python3
  provisioning: not required
  return code: 0
  stdout:
    {
      "candidate": [
        "/mnt/c/Users/barlo/projects/drydock/uat/jq/runs/20260822.044627/build/jq/jq"
      ],
      "corpus": "jq.test",
      "summary": {
        "pass": 43,
        "fail": 0,
        "error": 0,
        "skip": 0
      },
      "cases": []
    }

## Build summary
RESULT: SUCCESS

FILES CHANGED:
- [jq_interpreter/evaluator.py](/mnt/c/Users/barlo/projects/drydock/uat/jq/runs/20260822.044627/build/jq/jq_interpreter/evaluator.py)
- [tests/test_data_003_entries_containment.py](/mnt/c/Users/barlo/projects/drydock/uat/jq/runs/20260822.044627/build/jq/tests/test_data_003_entries_containment.py)

SUMMARY:
Implemented DATA-004 index, binary search, quantifier, emptiness, and IN fixes. Scoped conformance: 43 passed, 0 failed, 0 errored. Project tests: 151 passed.

BLOCKERS:
- None