Evidence: Block 3 · Service (block-3)

• block type: block
• date: 2026-08-22
• resulting state: closed/verified
• story points (combined assembled cost): 11182
• execution id: 20260822.195011.791Z-7425cbae

Stories built

• Implement jq process exit and diagnostic behavior. (EXEC-002) [story]

Stacked context

• compass: COMPASS.md (SP 3420)
• implements: FEATURE-EXEC-002.md (SP 494)
• context: run_conformance.py (SP 4354)
• context: ARCHITECTURE_compact.md (SP 154)
• stack: python_compact.md (SP 1534)
• stack: common_compact.md (SP 1179)

Build directory changes

• jq_interpreter/cli.py
• tests/test_architecture.py

Pre-build acceptance observation

• GREEN (prepassed): compile-exit-code (FEATURE-EXEC-002.md)

intent: A syntactically invalid jq program returns the compile-failure status. return code: 0

• GREEN (prepassed): runtime-exit-code (FEATURE-EXEC-002.md)

intent: A compiled jq program that raises returns the runtime-failure status. return code: 0

• GREEN (prepassed): partial-runtime-output (FEATURE-EXEC-002.md)

intent: Values emitted before a runtime error remain available on stdout. return code: 0

Post-build programmatic acceptance

• PASS: compile-exit-code (FEATURE-EXEC-002.md)

intent: A syntactically invalid jq program returns the compile-failure status. target interpreter: /mnt/c/Users/barlo/projects/drydock/.venv/bin/python3 provisioning: not required return code: 0

• PASS: runtime-exit-code (FEATURE-EXEC-002.md)

intent: A compiled jq program that raises returns the runtime-failure status. target interpreter: /mnt/c/Users/barlo/projects/drydock/.venv/bin/python3 provisioning: not required return code: 0

• PASS: partial-runtime-output (FEATURE-EXEC-002.md)

intent: Values emitted before a runtime error remain available on stdout. target interpreter: /mnt/c/Users/barlo/projects/drydock/.venv/bin/python3 provisioning: not required return code: 0

Build summary

Implemented EXEC-002 process behavior.

• Compile failures exit 3.
• Runtime failures exit 5.
• Success exits 0.
• Diagnostics remain on stderr.
• Partial output is flushed and preserved before runtime errors.

All 16 unit tests and three acceptance checks pass.

RESULT: SUCCESS

FILES CHANGED:

• jq_interpreter/cli.py
• tests/test_architecture.py

SUMMARY: Added immediate output flushing and regression coverage for stderr-only runtime diagnostics.

BLOCKERS:

• None