test(cron): cover cron_list/status/tick/create CLI helpers

[teknium1]

Summary

Adds direct unit coverage for the cron_list / cron_status / cron_tick / cron_create CLI helpers in hermes_cli/cron.py — none of these had tests on main. Test-only change. Closes #40627, supersedes stale #35814 (credit: @xuezhaolan).

Changes

• tests/hermes_cli/test_cron.py: +5 tests
  • cron_list renders jobs and warns when the gateway is absent (builtin provider)
  • cron_status reports running gateway PIDs, active-job count, earliest next run
  • cron_tick invokes cron.scheduler.tick(verbose=True)
  • cron_create success path prints job id, skills, script, no-agent mode, workdir, next run
  • cron_create failure path prints the error and returns exit code 1
• Existing create/edit fixtures updated with the script/workdir/no_agent args the current CLI passes

Validation

	Before	After
tests/hermes_cli/test_cron.py	11 passed	16 passed

Run: scripts/run_tests.sh tests/hermes_cli/test_cron.py -q

Infographic

[alt-glitch]

This was generated by AI during triage.

Duplicate of #40627 — same author, same file (tests/hermes_cli/test_cron.py), and identical title/scope (cron_list/status/tick/create CLI helper coverage). #40627 is the earlier open PR; both supersede the stale #35814/#40430.