feat(web): Instrument GA4 events and user properties for telemetry tracking - #470
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…acking - Create AnalyticsService to manage GA4 initialization, User Properties, and event dispatches gated by user consent. - Set adk_version and adk_language User Properties via gtag when /version API resolves. - Instrument standalone telemetry events for feature usage: chat_session_create, builder_enter_click, builder_agent_save_click, graph_view_click, trace_view_toggle, event_view_toggle, and eval_create_click. - Add comprehensive AnalyticsService unit tests.
Update TelemetryService and unit tests to request /config/telemetry instead of /api/config/telemetry to match the FastAPI route registered in dev_server.py.
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This PR instruments Google Analytics 4 (GA4) telemetry events and user properties across the Web UI, fully gated by the user's telemetry consent preference.
Changes Included
analytics.service.ts):effect()onTelemetryService.telemetryEnabled().ga-disable-<MEASUREMENT_ID> = trueand drops all outbound dispatches when consent is withheld (false/null).chat_session_create: creating a new chat session inChatComponent.builder_enter_click: entering builder mode inChatComponent.builder_agent_save_click: saving an agent build inBuilderTabsComponent.graph_view_click: opening the agent structure graph inChatComponent.trace_view_toggle: navigating to the Trace tab inSidePanelComponent.event_view_toggle: navigating to the Event tab inSidePanelComponent.eval_create_click: creating a new eval case inAddEvalSessionDialogComponent.analytics.service.spec.ts) covering event/property dispatches and consent enforcement.Verification
npx ng build --configuration development.