CLI: add filter flags to `nora monitoring events`

[JustinaChano04]

Area: cli/ · Difficulty: easy

Problem

The backend monitoring API already supports useful event filters like search, type, from, and to, but nora monitoring events currently only forwards --limit. That means the CLI falls short of the API and dashboard for common operator workflows like "show only backup failures from today" or "search for one agent's event text".

Scope

Extend cli/src/commands/monitoring.js so nora monitoring events forwards these optional flags to GET /api/monitoring/events:

• --search
• --type
• --from
• --to
• preserve existing --limit

Update cli/README.md and the docs/guide wording as needed so the new filters are discoverable. Keep the command's output format the same; this issue is about filtering, not JSON output.

Acceptance

• nora monitoring events --type agent_deleted --limit 10 forwards both filters to the API.
• --search, --from, and --to also pass through correctly when supplied.
• Existing behavior without filters is unchanged.
• CLI docs mention the new flags.

Why this improves the repo

It closes a practical CLI/API parity gap and makes the terminal workflow much more useful for real operator triage.

[solomon2773]

Thanks @JustinaChano04 — I verified current master still forwards only limit from monitoring events, so the CLI/API filter gap remains. The scope is valid and unassigned. A contributor can claim it here; please add focused command tests for combined filters, keep the default output unchanged, update the CLI docs, and report CLI test results.