Add component search analytics baseline

[Mbeaulne]

Description

Adds analytics tracking to the component library search experience across both the dashboard and editor surfaces. Search completion events are fired with a debounced 400ms delay after results settle, capturing metadata such as query_length, result_count, search_backend, and ai_ranked — intentionally omitting the raw query text to avoid logging potentially sensitive user input.

Tracking is also added to the AI rerank buttons (both "smart" and "deep" modes) and the empty-state suggestion chips, each annotated with the relevant surface identifier (dashboard_v2 or editor_component_search_v2).

The ComponentSearchEmptyStateSuggestions component now accepts a required surface prop so the correct surface label is forwarded to the tracking payload.

Related Issue and Pull requests

Type of Change

• Bug fix
• New feature
• Improvement
• Cleanup/Refactor
• Breaking change
• Documentation update

Checklist

• I have tested this does not break current pipelines / runs functionality
• I have tested the changes on staging

Screenshots (if applicable)

Test Instructions

1. Open the component library search in both the dashboard and the editor.
2. Type a query and wait ~400ms after results appear — verify a component_library.search.completed event is fired with the correct metadata and that no raw query text is included.
3. Click an AI rerank button (smart or deep) and confirm a component_library.search.ai_rerank event is fired with the correct mode, surface, and query_length.
4. Trigger the empty-state suggestions (search for something with no results) and click a suggestion chip — confirm a component_library.search.suggestion event fires with the correct surface and suggested_query.

Additional Comments

Query text is deliberately excluded from all tracking payloads; only query_length is recorded to avoid capturing potentially sensitive search input.

[github-actions]

🎩 Preview

A preview build has been created at: 06-23-add_component_search_analytics_baseline/202c693

[Mbeaulne]

Warning

This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite.
Learn more

• Simplify component search result cards #2459
• Add context-aware component search suggestions #2458
• Add component discovery docs #2457
• Add component search analytics baseline #2456 👈 (View in Graphite)
• Limit dashboard component browse rendering #2454
• Add component search empty state suggestions #2453
• Decouple editor component search input #2452
• Polish component search explanations #2451
• Add compatible component suggestions #2450
• Add component collection search results #2449
• Add component lifecycle badges #2448
• Add component search URL state #2447
• Disable AI search when literal search finds no matches #2444
• Debounce component search input #2433
• add client-side embeddings cached in IndexedDB #2432
• Add search quality expectation tests for lexical search #2431
• Add deep AI search to rerank all components in selected sources #2430
• Add source-diverse AI rerank candidate pool #2429
• Add negative constraint parsing to lexical search #2428
• Add fuzzy/typo-tolerant matching for component name and I/O fields #2427
• Improve component search scoring relevance #2426
• Add synonym expansion to component lexical search #2425
• Normalize component search tokens for better matching #2424
• Expand component search indexing fields #2423
• master

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