Order hour nav by the day, not by build/declaration order

HOUR_IDS drove the nav's render order but was declared arbitrarily;
reorder to Matins, Lauds, Prime, Terce, Sext, None, Vespers, Compline
so the nav reads left-to-right the way the office actually unfolds.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

src/hours/types.ts

@@ -9,14 +9,14 @@ export type HourId =
   | 'matins';
 
 export const HOUR_IDS: readonly HourId[] = [
+  'matins',
+  'lauds',
   'prime',
-  'compline',
   'terce',
   'sext',
   'none',
-  'lauds',
   'vespers',
-  'matins',
+  'compline',
 ];
 
 /** Reference into one of the proper-text stores (data/propers/**). Not built yet — placeholder shape. */