Make smoke JSON output consistent

[abhinavgautam01]

Summary

Fixes #3 by making maxed smoke --json use the shared JSON emitter consistently across success paths.

Both the no-connectors path and connectors path now include a top-level ok field and use deterministic pretty-printed JSON formatting.

Changes

• Route no-connectors smoke --json output through _emit_json()
• Route connectors smoke --json output through _emit_json()
• Add top-level ok to smoke --json success payloads
• Add regression tests for connector and no-connector JSON output

Validation

• pytest -q
• git diff --check
• maxed --version
• maxed suite --json
• maxed init examples/workspace.yaml --base-dir /tmp/maxed-cli-smoke-json-ci --json
• maxed lint-workpaper /tmp/maxed-cli-smoke-json-ci/example-workspace/workpapers/example.workpaper.json
• Package build
• Built wheel install + maxed --version