Remove legacy daily report references

docs/config.md

@@ -185,7 +185,7 @@ Supported report keys are `daily`, `today`, `tomorrow`, `hourly`,
 `three_day`, `weekend`, and `storm`. Canonical report IDs and accepted aliases
 are also valid, including `three_day_outlook`, `weekend_outlook`, and
 `storm_report`. Hyphens and underscores are treated equivalently in report
-keys. `daily_today` is not a supported report key.
+keys. Retired report keys are not supported.
 
 `reports.today` applies only to the Today Report. `reports.daily` applies only
 to the dated Daily Report.

docs/internal/report-registry.md

@@ -35,7 +35,7 @@ underscore and descriptive aliases such as `three_day_outlook`,
 
 `daily` resolves to the dated Daily Report ID `daily`. `today` resolves to the
 independent Today report ID `today`. `reports.today` is not an alias for
-`reports.daily`, and `reports.daily_today` is not a supported config key.
+`reports.daily`, and retired report keys are not supported.
 
 Markdown report definitions use the `scriptorium_markdown` generation mode.
 Their template and structured-text schema identifiers are empty. Daily Report,