Route SPC convective stanzas in prompt packages

docs/internal/prompt-input.md

@@ -41,6 +41,7 @@ briefing:
   metadata: {}
   applicable_risk_products:
     alert_digest: {}
+    spc_convective_outlooks: {}
   derived_summaries:
     derived_daily_summary: {}
     derived_daypart_summaries: {}
@@ -49,6 +50,7 @@ briefing:
   narrative_products:
     narrative_forecast: {}
     area_forecast_discussion: {}
+    spc_convective_discussion: {}
     weather_story: {}
   raw_data:
     current_conditions: {}