Document near-term report behavior

docs/internal/module.md

@@ -47,6 +47,24 @@ The registry recognizes these IDs:
 Every registered module has a builder. Report composition entries that refer to
 unknown or unimplemented module IDs fail validation instead of being skipped.
 
+## Near-Term Composition
+
+The default Near-Term Report module order is:
+
+1. `metadata`
+2. `current_conditions`
+3. `hourly_forecast`
+4. `precip_timing`
+5. `alert_digest`
+6. `spc_convective_outlooks`
+7. `area_forecast_discussion`
+8. `spc_convective_discussion`
+9. `weather_story`
+
+Near-Term Report does not include daily or daypart summary modules by default.
+Its `area_forecast_discussion` item is configured to include only
+`key_messages` and `short_term`.
+
 ## Options
 
 Most modules use an empty options struct, including