FIX Share scenario success statistics across SDK, backend and reports

doc/code/framework.md

@@ -320,6 +320,7 @@ The below talks about responsibilities of most modules in the PyRIT library
 - This is where cross-run analysis belongs: e.g. "which attack performed best for this objective?", "how often did a technique succeed?", or "which responses match known content?".
 - **Does not own**: live, in-attack decisions — any decision made *during* an attack is a scorer's job. Analytics only operates on stored results, after the fact.
 - Today it includes `ConversationAnalytics` (inspecting conversation history), `analyze_results` / `AttackStats` (aggregating outcomes across techniques), and text-matching strategies (`ExactTextMatching`, `ApproximateTextMatching`).
+- `compute_scenario_statistics` is the single calculation of scenario success statistics. It owns execution-unit identity (atomic attack, technique configuration, and seed group), latest-attempt selection, counts, denominators, and rounding. `ScenarioResult`'s SDK callers, the GUI backend, and the console, JSON, and HTML reports all present its results (`ScenarioExecutionStatistics`, `ScenarioExecutionUnit`, and `ScenarioProgressCounts` in `pyrit.models`) instead of calculating their own.
 - Shared analytics contracts (filters, dimensions, typed values, reports, facets, result pages, and `AttackStats`) live in `pyrit.models.analytics`. They validate data without querying memory or calculating statistics. `AttackResultSelection` defines selection modes without changing existing callers.
 - Filter-bound cursor and label-normalization helpers live in `pyrit.common.pagination`. The backend pagination module retains compatibility exports, including History's invalid-cursor first-page fallback.
 

pyproject.toml

@@ -169,6 +169,8 @@ filterwarnings = [
     # Keep the in-repo suite on the scorable/expectation contract. Tests that cover the
     # shim itself opt back in with pytest.warns.
     "error:Scorer\\.score_async:DeprecationWarning",
+    # Rates come from pyrit.analytics; tests that cover the deprecated method opt back in with pytest.warns.
+    "error:ScenarioResult\\.objective_achieved_rate:DeprecationWarning",
 ]
 
 [tool.ty]

pyrit/analytics/__init__.py

@@ -11,12 +11,14 @@
 if TYPE_CHECKING:
     from pyrit.analytics.conversation_analytics import ConversationAnalytics
     from pyrit.analytics.result_analysis import AttackStats, analyze_results, get_cached_results_for_technique
+    from pyrit.analytics.scenario_statistics import compute_scenario_statistics
     from pyrit.analytics.text_matching import ApproximateTextMatching, ExactTextMatching, TextMatching
 
 _LAZY_EXPORTS: dict[str, str | tuple[str, str | None]] = {
     "analyze_results": "pyrit.analytics.result_analysis",
     "ApproximateTextMatching": "pyrit.analytics.text_matching",
     "AttackStats": "pyrit.analytics.result_analysis",
+    "compute_scenario_statistics": "pyrit.analytics.scenario_statistics",
     "ConversationAnalytics": "pyrit.analytics.conversation_analytics",
     "ExactTextMatching": "pyrit.analytics.text_matching",
     "get_cached_results_for_technique": "pyrit.analytics.result_analysis",