CPS scope selector changes

[shainaraskas]

Summary

• Expanded the CPS scope selector documentation from a basic "This project / All projects" description to cover the full project picker UX, including per-project toggles, context menu actions, tag filters, and filter management
• Added stored scope concept (dashboards, anomaly jobs, transforms) as distinct from session scope, with a new subsection explaining the difference
• Documented the tag filter workflow: adding, editing, inverting, disabling, and removing filters, plus quick-filter from project tag badges

Sources

• Figma
• [CPS] Integrate new CPS project picker kibana#279522
• [CPS] implement project picker filtering operations kibana#277842

Gated by elastic/kibana#268621

Open items

• The ES|QL SET project_routing autocomplete only suggests _alias:_origin and _alias:* - can't find an issue for extension to other tags
• ML anomaly detection UX changes under [CPS] Core CPS in ML AD content #7814
• Transforms UX changes TODO (https://github.com/elastic/docs-content-internal/issues/1405)
• Inspector UX changes TODO ([CPS] Changes to inspector kibana#268946)
• Anything else in https://github.com/elastic/docs-content-internal/issues/1197

Generative AI disclosure

1. Did you use a generative AI (GenAI) tool to assist in creating this contribution?

• Yes
• No

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Elastic Docs Style Checker (Vale)

Summary: 2 suggestions found

💡 Suggestions (2): Optional style improvements. Apply when helpful.

File	Line	Rule	Message
explore-analyze/cross-project-search/cross-project-search-manage-scope.md	75	Elastic.WordChoice	Consider using 'deactivate, deselect, hide, turn off' instead of 'disable', unless the term is in the UI.
explore-analyze/cross-project-search/cross-project-search-manage-scope.md	91	Elastic.WordChoice	Consider using 'deactivated, deselected, hidden, turned off, unavailable' instead of 'disabled', unless the term is in the UI.

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🔍 Preview links for changed docs

• explore-analyze/cross-project-search/cross-project-search-manage-scope.md