Implements the spec-required JSON/YAML output envelope for all CLI commands
that use format_output(). The envelope structure is:
{
"command": "<command that was run>",
"status": "ok" | "warn" | "error",
"exit_code": 0,
"data": { ... command-specific payload ... },
"timing": { "duration_ms": 123 },
"messages": [{ "level": "ok", "text": "..." }]
}
Changes:
- Add _build_envelope() helper to construct the spec-required envelope
- Add optional command, status, exit_code, messages parameters to format_output()
- Wrap json/yaml output in the envelope; plain/table/rich/color unchanged
- Add timing measurement (duration_ms) to all json/yaml outputs
- Add new BDD feature file (cli_json_envelope.feature) with 14 scenarios
testing envelope field presence, values, and data payload
- Update 14 existing step files to unwrap the envelope when checking
specific data keys (backward-compatible via _unwrap_envelope() helper)
Closes#3431
freemo
aditya
