The verify_validation_sub_fields() helper checked for key "test" but
_apply_output_dict() uses "tests" (plural), causing the Robot Framework
integration test "Validation Contains Test Lint Type Check" to always
exit with rc=1.
ISSUES CLOSED: #9449
The `agents plan apply --format json` command now produces a properly structured
JSON envelope with all required fields (command, status, exit_code, data, timing,
messages). Previously the output used raw plan data without the spec-required
envelope wrapper, making it inconsistent with `plan execute --format json`.
Changes:
- Add `_apply_output_dict()` function to build the spec-required JSON envelope
for plan apply (matching `_execute_output_dict` pattern)
- Track wall-clock timing in `lifecycle_apply_plan()` and pass to envelope builder
- Update `lifecycle_apply_plan()` to use the new envelope instead of raw data
- Add BDD scenarios verifying the envelope structure for apply output
- Update CHANGELOG.md and CONTRIBUTORS.md
ISSUES CLOSED: #9449
controller-ci-rerun
HAL9000