feat(cli): capture_parallel_stream telemetry on success and failure paths

packages/cli/src/telemetry/events.test.ts

@@ -361,6 +361,22 @@ describe("render telemetry events", () => {
       }),
     );
   });
+
+  it("carries capture_parallel_stream on render_error via the shared payload", () => {
+    trackRenderError({
+      fps: 30,
+      quality: "standard",
+      docker: false,
+      errorMessage: "worker crashed",
+      captureParallelStream: "beginframe",
+    });
+
+    expect(trackEvent).toHaveBeenCalledWith(
+      "render_error",
+      expect.objectContaining({ capture_parallel_stream: "beginframe" }),
+      undefined,
+    );
+  });
 });
 
 describe("trackRenderFeedback", () => {

packages/cli/src/telemetry/events.ts

@@ -53,6 +53,8 @@ export interface RenderObservabilityTelemetryPayload {
   captureDePreRouterWorkers?: number;
   captureDeSelfVerifyFallback?: boolean;
   captureDeFallbackReason?: string;
+  /** Non-DE parallel-streaming router outcome ("screenshot" | "beginframe"). */
+  captureParallelStream?: string;
   observabilityExtractVideoCount?: number;
   observabilityExtractedVideoCount?: number;
   observabilityExtractTotalFrames?: number;
@@ -104,6 +106,7 @@ function renderObservabilityEventProperties(props: RenderObservabilityTelemetryP
     de_pre_router_workers: props.captureDePreRouterWorkers,
     de_self_verify_fallback: props.captureDeSelfVerifyFallback,
     de_fallback_reason: props.captureDeFallbackReason,
+    capture_parallel_stream: props.captureParallelStream,
     observability_extract_video_count: props.observabilityExtractVideoCount,
     observability_extracted_video_count: props.observabilityExtractedVideoCount,
     observability_extract_total_frames: props.observabilityExtractTotalFrames,

packages/cli/src/telemetry/renderObservability.test.ts

@@ -82,3 +82,17 @@ describe("renderObservabilityTelemetryPayload — DE inversion/router cohort (fa
     expect(payload.captureDeFallbackReason).toBeUndefined();
   });
 });
+
+describe("renderObservabilityTelemetryPayload — non-DE parallel-stream router", () => {
+  it("maps the router outcome", () => {
+    const payload = renderObservabilityTelemetryPayload(
+      makeSummary({ captureParallelStream: "beginframe" }),
+    );
+    expect(payload.captureParallelStream).toBe("beginframe");
+  });
+
+  it("stays undefined when the router never fired", () => {
+    const payload = renderObservabilityTelemetryPayload(makeSummary({}));
+    expect(payload.captureParallelStream).toBeUndefined();
+  });
+});

packages/cli/src/telemetry/renderObservability.ts

@@ -46,6 +46,7 @@ export function renderObservabilityTelemetryPayload(
     captureDePreRouterWorkers: capture.dePreRouterWorkers,
     captureDeSelfVerifyFallback: capture.deSelfVerifyFallback,
     captureDeFallbackReason: capture.deFallbackReason,
+    captureParallelStream: capture.captureParallelStream,
     observabilityExtractVideoCount: extraction?.videoCount,
     observabilityExtractedVideoCount: extraction?.extractedVideoCount,
     observabilityExtractTotalFrames: extraction?.totalFramesExtracted,