Evidence: Block 20 · Service (block-20)

• block type: block
• date: 2026-08-22
• resulting state: closed/verified
• story points (combined assembled cost): 56881
• execution id: 20260823.030840.777Z-b10f3c99

Stories built

• Implement lexical labels and breaks. (FLOW-004) [story]

Acceptance tooling authorization

• FEATURE-FLOW-004.md#flow-004-conformance: executable=python3; scope=test; authorization=existing Target environment

Stacked context

• compass: COMPASS.md (SP 3420)
• implements: FEATURE-FLOW-004.md (SP 392)
• context: parser.y (SP 5596)
• 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/parser.py
• tests/test_flow_004_labels_breaks.py

Pre-build acceptance observation

• GREEN (prepassed): flow-004-conformance (FEATURE-FLOW-004.md)

intent: The implementation passes the authoritative corpus slice covering labels and breaks. return code: 0 stdout: { "candidate": [ "/mnt/c/Users/barlo/projects/drydock/uat/jq/runs/20260822.044627/build/jq/jq" ], "corpus": "jq.test", "summary": { "pass": 7, "fail": 0, "error": 0, "skip": 0 }, "cases": [] }

Post-build programmatic acceptance

• PASS: flow-004-conformance (FEATURE-FLOW-004.md)

intent: The implementation passes the authoritative corpus slice covering labels and breaks. 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": 7, "fail": 0, "error": 0, "skip": 0 }, "cases": [] }

Build summary

RESULT: SUCCESS

FILES CHANGED:

• jq_interpreter/parser.py
• tests/test_flow_004_labels_breaks.py

SUMMARY: Implemented AST-based lexical label validation and added FLOW-004 coverage. All 96 tests pass; scoped conformance passes 7/7.

BLOCKERS:

• None