Phase 0 Task 4 of the JSON Productization Program: CI shape parity guard.
This test locks the v1.5 emission baseline (documented in SCHEMAS.md § v1.5
Emission Baseline) so any future PR that introduces shape drift in a documented
verb fails this test at PR time.
Complements Task 2 (no-silent guarantee) by asserting SPECIFIC top-level key
sets, not just 'stdout is non-empty valid JSON'. If a verb adds/removes a
top-level field, this test fails with a clear error message pointing to
SCHEMAS.md § v1.5 Emission Baseline for update guidance.
Coverage:
- 8 success-path verbs with locked shape (help, version, doctor, skills,
agents, system-prompt, bootstrap-plan, list-sessions)
- 2 error-path cases with locked error envelope shape (prompt-no-arg, doctor --foo)
Key enforcement rules:
- Success envelope: exact key set match per verb
- Error envelope: {error, hint, kind, type} (4 keys, all verbs)
- list-sessions deliberately kept as {command, sessions} (Phase 1 target)
Test design intent:
- Locks CURRENT (possibly imperfect) shape, NOT target shape
- Forces PR authors to update both code + SCHEMAS.md + test together
- Makes Phase 1 shape normalization PRs visible: 'update this test'
Phase 0 now COMPLETE:
- Task 1 ✅ Stream routing fix (cycle #89)
- Task 2 ✅ No-silent guarantee (cycle #90)
- Task 3 ✅ Per-verb emission inventory SCHEMAS.md (cycle #91)
- Task 4 ✅ CI shape parity guard (this cycle)
Tests: 18 output_format_contract tests all pass (+1 from Task 4).
v1.5 emission baseline now locked by code + tests + docs.
Refs: #168c, cycle #92, Phase 0 Task 4 (final)
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