Cleanup after implementation of the module architecture and remove completed roadmap files

docs/internal/module.md

@@ -33,21 +33,15 @@ The registry recognizes these IDs:
 - `current_conditions`
 - `derived_daily_summary`
 - `derived_daypart_summaries`
-- `hourly_table`
 - `precip_timing`
 - `alert_digest`
 - `area_forecast_discussion`
 - `weather_story`
-- `forecast_delta`
 - `outdoor_windows`
 - `tomorrow_planning`
-- `weekend_planning`
-- `storm_window_summary`
 
-Modules with builders emit stanzas into module snapshots. Registered modules
-without builders are valid composition entries but do not emit snapshot stanzas.
-That keeps report composition declarations centralized while limiting prompt
-packages to data the application builds.
+Every registered module has a builder. Report composition entries that refer to
+unknown or unimplemented module IDs fail validation instead of being skipped.
 
 ## Options