fix: add types for namespace

[shahzad31]

fixes #697
fixes #749

Since kibana already supports it we just need to add types, support via config and cli.

example

heartbeat.monitors:
  - type: http
    name: Todos Lightweight Test 0
    id: todos-lightweight-test-0
    enabled: true
    urls: 'https://elastic.github.io/synthetics-demo'
    schedule: '@every 60m'
    timeout: 18s
    namespace: food

  monitor.use({
    schedule: 10,
    namespace: 'testprojects',
  });

[Copilot]

Pull Request Overview

Adds support for a namespace parameter across CLI, configuration types, and runtime logic.

• Introduce --namespace CLI option in getCommonCommandOpts and register it in cli.ts
• Extend MonitorConfig, runner logic, and shared types to include an optional namespace field
• Add tests to verify namespace is correctly applied for pushed monitors and runner instances

Reviewed Changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/options.ts	Add --namespace option definition
src/dsl/monitor.ts	Extend MonitorConfig type with namespace?
src/core/runner.ts	Pass options.namespace into monitor config
src/common_types.ts	Add namespace? to PushOptions
src/cli.ts	Register the new namespace option in the CLI
tests/push/monitor.test.ts	Test support for namespace in push monitors
tests/core/runner.test.ts	Verify runner includes namespace in monitor config

Comments suppressed due to low confidence (1)

tests/push/monitor.test.ts:527

• Add a test case to verify the default namespace when none is provided, ensuring it falls back to the project spaceId.

    it('supports namespace in config', async () => {

[vigneshshanmugam]

I have raised this before, this should belong inside data_stream #697 (comment)

[shahzad31]

it's already at namespace in kibana, we can't change it, though we can additionally add support for it here?

[vigneshshanmugam]

I am confused with this option now, Is it synthetics data stream namespace or something else?

[shahzad31]

well it's data stream namespace option