fix: expose formal provider status in source health

platform/backend/app/main.py

@@ -708,6 +708,8 @@ class MatchDetailResponse(BaseModel):
 class SourceHealthResponse(BaseModel):
   status: str
   odds_coverage_status: str = 'unknown'
+  formal_provider_status: dict[str, Any] = Field(default_factory=dict)
+  formal_provider_blocker: str | None = None
   upcoming_odds_matches: int = 0
   stale_unsettled_matches: int = 0
   stale_unsettled_threshold_hours: int = 3
@@ -867,6 +869,8 @@ async def analytics_source_health() -> SourceHealthResponse:
   return SourceHealthResponse(
     status=freshness_status,
     odds_coverage_status=odds_coverage_status,
+    formal_provider_status=primary_provider_status,
+    formal_provider_blocker=formal_provider_blocker,
     upcoming_odds_matches=upcoming_odds_matches,
     stale_unsettled_matches=stale_unsettled_matches,
     stale_unsettled_threshold_hours=stale_threshold_hours,