Added a field with the current local date to the data package

docs/internal/prompt-input.md

@@ -21,6 +21,8 @@ Outputs:
   includes configured location context, current conditions when available,
   discussion key messages, and short/long-term AFD narratives when the Weather
   API provides them.
+- report metadata includes `currentLocalDate`, the generation date formatted as
+  `YYYY-MM-DD` in the effective report timezone.
 - optional JSON file written by `promptinput.Save`
 
 ## Boundaries
@@ -31,8 +33,8 @@ Outputs:
 
 ## Config Fields Used
 
-None directly. Config-derived values, including prompt location context, are
-already present in briefing metadata before this package runs.
+None directly. Config-derived values, including timezone and prompt location
+context, are already present in briefing metadata before this package runs.
 
 ## External Adapters Used