fix(gooddata-eval): report whole-conversation latency and ungated cost

Third structural finding from #1799's review, applied here.

latency_sec used run.turn_wall_clock_sec, which is the goal turn alone and
excludes the clarification turns that got there -- understating the item's real
elapsed cost on exactly the runs where it matters. It now prefers pt.latency and
falls back to the goal turn, which is what 7 of the 8 existing kinds already do;
kda_skill is the outlier and documents its own reason, and this copied it without
re-checking.

cost_usd was gated on ev.triggered, so a run that answered without ever reaching
the tool reported no cost despite having spent tokens. The gate is gone.

806 passed, lint and format clean.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

Author: Tomkess

packages/gooddata-eval/src/gooddata_eval/core/agentic/forecasting.py

@@ -526,8 +526,15 @@ def _write_scores(ctx: RunTraceContext) -> None:
                     ctx.quality(
                         tid,
                         strict_checks=strict_checks,
-                        latency_sec=run.turn_wall_clock_sec,
-                        cost_usd=pt.total_cost if pt and ev.triggered else None,
+                        # pt.latency covers the whole conversation, which is the item's real
+                        # elapsed cost when the agent needed clarification turns to get
+                        # there; turn_wall_clock_sec (the goal turn alone) is the fallback.
+                        # This is what 7 of the 8 existing kinds do -- kda_skill is the
+                        # outlier and documents its own reason. Cost is not gated on
+                        # ev.triggered: a run that answered without ever reaching the tool
+                        # still spent tokens, and hiding that understates what the item cost.
+                        latency_sec=pt.latency if pt else run.turn_wall_clock_sec,
+                        cost_usd=pt.total_cost if pt else None,
                     )
 
         # Before the pass@K raise: a failing item's scores are the ones worth having.