# Evidence: Block 39 · Service (block-39)

- block type: block
- date: 2026-08-23
- resulting state: closed/verified
- story points (combined assembled cost): 53294
- execution id: 20260823.114405.252Z-b659e0d3

## Stories built
- Implement input stream controls. (IO-001) [story]

## Acceptance tooling authorization
- FEATURE-IO-001.md#io-001-input-conformance: executable=python3; scope=test; authorization=existing Target environment
- FEATURE-IO-001.md#io-001-streams: executable=python3; scope=test; authorization=existing Target environment

## Stacked context
- compass: COMPASS.md (SP 3420)
- implements: FEATURE-IO-001.md (SP 594)
- context: jq-manual.txt (SP 32696)
- context: jq.test (SP 13058)
- context: ARCHITECTURE_compact.md (SP 154)
- stack: python_compact.md (SP 1534)
- stack: common.md (SP 1807)

## Build directory changes
- jq_interpreter/cli.py
- jq_interpreter/evaluator.py
- jq_interpreter/interpreter.py
- jq_interpreter/parser.py
- tests/test_json_io.py

## Pre-build acceptance observation
- GREEN (prepassed): io-001-input-conformance (FEATURE-IO-001.md)
  intent: The authoritative corpus cases covering input stream controls execute and pass.
  return code: 0
  stdout:
    {
      "candidate": [
        "/mnt/c/Users/barlo/projects/drydock/uat/jq/runs/20260822.044627/build/jq/jq"
      ],
      "corpus": "jq.test",
      "summary": {
        "pass": 1,
        "fail": 0,
        "error": 0,
        "skip": 0
      },
      "cases": []
    }
- GREEN (prepassed): io-001-streams (FEATURE-IO-001.md)
  intent: The selected corpus includes both single-next-input and remaining-input stream behavior.
  return code: 0
  stdout:
    {
      "candidate": [
        "/mnt/c/Users/barlo/projects/drydock/uat/jq/runs/20260822.044627/build/jq/jq"
      ],
      "corpus": "jq.test",
      "summary": {
        "pass": 1,
        "fail": 0,
        "error": 0,
        "skip": 0
      },
      "cases": []
    }

## Post-build programmatic acceptance
- PASS: io-001-input-conformance (FEATURE-IO-001.md)
  intent: The authoritative corpus cases covering input stream controls execute and pass.
  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": 1,
        "fail": 0,
        "error": 0,
        "skip": 0
      },
      "cases": []
    }
- PASS: io-001-streams (FEATURE-IO-001.md)
  intent: The selected corpus includes both single-next-input and remaining-input stream behavior.
  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": 1,
        "fail": 0,
        "error": 0,
        "skip": 0
      },
      "cases": []
    }

## Build summary
RESULT: SUCCESS

FILES CHANGED:
- jq_interpreter/cli.py
- jq_interpreter/evaluator.py
- jq_interpreter/interpreter.py
- jq_interpreter/parser.py
- tests/test_json_io.py

SUMMARY:
Implemented `input`, `inputs`, `input_filename`, and `input_line_number` with shared stdin stream state and metadata tracking.

Verification:
- Both IO-001 scoped gates passed.
- Full test suite: 173 passed.

BLOCKERS:
- None