# Evidence: Block 9 · Service (block-9)

- block type: block
- date: 2026-08-22
- resulting state: closed/verified
- story points (combined assembled cost): 51280
- execution id: 20260823.021651.942Z-9c6d4747

## Stories built
- Implement the stream-valued filter evaluator. (CORE-001) [story]

## Acceptance tooling authorization
- FEATURE-CORE-001.md#core-001-conformance: executable=python3; scope=test; authorization=existing Target environment

## Stacked context
- compass: COMPASS.md (SP 3420)
- implements: FEATURE-CORE-001.md (SP 381)
- 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_stream_evaluator.py

## Pre-build acceptance observation
- GREEN (prepassed): core-001-conformance (FEATURE-CORE-001.md)
  intent: The executable evaluates identity, empty, range, and generator ordering as ordered streams.
  return code: 0

## Post-build programmatic acceptance
- PASS: core-001-conformance (FEATURE-CORE-001.md)
  intent: The executable evaluates identity, empty, range, and generator ordering as ordered streams.
  target interpreter: /mnt/c/Users/barlo/projects/drydock/.venv/bin/python3
  provisioning: not required
  return code: 0

## Build summary
Implemented CORE-001 stream evaluation support and regression coverage.

RESULT: SUCCESS

FILES CHANGED:
- jq_interpreter/evaluator.py
- tests/test_stream_evaluator.py

SUMMARY:
- Preserved lazy ordered iteration and generator multiplicity.
- Added tests for identity, empty, iteration, pipelines, comma, and range.
- All 39 project tests pass.
- CORE-001 acceptance probes pass.

BLOCKERS:
- None