Instrument Pendo Track Events

[lci-novus-dev]

Summary

Adds Pendo Track Event instrumentation across both client-side and server-side code to capture key user interactions and system events in the PromptProof testing dashboard. Client-side events use pendo.track() for browser interactions, while server-side events use a new HTTP-based tracking utility that posts to the Pendo Track API.

Changes

• Created src/utils/pendoTrack.ts — reusable server-side utility for sending events to the Pendo Track API via HTTP POST
• Added test_suite_executed event in TestDashboard.tsx — fires when a user initiates a test suite run, capturing provider, model, and test count
• Added model_configuration_changed event in TestDashboard.tsx — fires when the user changes the LLM provider or model selection
• Added test_filter_applied event in TestFilters.tsx — fires when search, category, or difficulty filters are changed
• Added test_suite_completed event in test-server.ts — fires after all test batches complete, with aggregate results (pass/fail counts, duration, average score)
• Added test_suite_failed event in test-server.ts — fires when the entire test run fails due to a server error
• Added individual_test_completed event in test-server.ts — fires when a single test case finishes evaluation successfully
• Added individual_test_failed event in test-server.ts — fires when a single test case throws an execution error
• Added test_authoring_loaded event in test-server.ts — fires when test files are discovered and loaded from the filesystem
• Added metric_evaluation_completed event in evaluator/core.ts — fires after all metrics (semantic similarity, BLEU, ROUGE) are computed for a test case
• Added llm_evaluation_completed event in evaluator/core.ts — fires after the LLM-as-judge evaluation step completes
• Added rule_validation_completed event in evaluator/core.ts — fires after rule-based validation completes (when rules are configured)

Notes

• Client-side events are guarded with typeof pendo !== 'undefined' checks to avoid errors if the Pendo agent is not loaded
• Server-side events use fire-and-forget HTTP calls wrapped in try-catch to avoid breaking application flow
• The Pendo integration key and data host are configured in the pendoTrack utility — update these if deploying to a different environment

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